Claims:1. A switch for facilitating communication from an antenna alternatively to a transmitter and a receiver, the switch comprising:
a first PIN diode configured at a transmit path that is biased through RF choke, wherein the transmit path communicatively couples the transmitter and the antenna; and
a second set of PIN diodes configured in series in a receive path, wherein the receive path communicatively couples the antenna and a receiver;
a switch control unit operatively coupled to the first PIN diode and the second set of PIN diodes, the switch control unit configured to toggle biasing across the first PIN diode and the second set of PIN diodes, between a forward bias state and a reverse bias state,
wherein the switch control unit forward biases the first PIN diode, and reverse biases the second set of PIN diodes to enable communication between the transmitter and the antenna, and
wherein the switch control unit reverse biases the first PIN diode, and forward biases the second set of PIN diodes to enable communication between the antenna and the receiver.
2. The switch as claimed in claim 1, wherein the switch comprises a third set of PIN diodes configured in shunt with the receive path to provide isolation between the transmitter and the receiver.
3. The switch as claimed in claim 1, wherein the switch comprises one or more inductors of predefined inductance being configured in the receive path for facilitating impedance matching between the transmitter and the receiver.
4. The switch as claimed in claim 1, wherein the switch comprises a first capacitor configured between the transmitter and the first PIN diode, wherein the first capacitor blocks DC signals during the transmission.
5. The switch as claimed in claim 1, wherein the switch comprises any or a combination of a set of coupling capacitors and a set of decoupling capacitors to facilitate communication between the transmitter and the receiver.
6. The switch as claimed in claim 1, wherein the switch comprises one or more inductors configured to remove harmonics from signals during the communication.
7. The switch as claimed in claim 1, wherein the switch control unit provides a predefined low voltage to cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the forward biased state.
8. The switch as claimed in claim 7, wherein the switch comprises a boost converter to provide the predefined high voltage.
9. The switch as claimed in claim 1, wherein the switch control unit provides a predefined high voltage to the cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the reverse biased state.
10. The switch as claimed in claim 1, wherein the switch is configured to operate over a broad range of frequency.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates to the field of switching in communication systems. More particularly, the present disclosure relates to a switch for facilitating communication from an antenna alternatively to a transmitter and a receiver.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Transmit / Receive switches are widely used in a wireless communication system using single antenna and that uses same frequency for transmission and reception. The switch connects antenna to the transmitter and receiver alternatively. The transmit path insertion loss along with type of switch component may limit the power handling capability and isolation between transmit and receive paths, which acts as one of the parameter deciding the receiver sensitivity. The switches used should have fast switching capability to cater to TDD applications. Furthermore, to meet emission requirements a transmission/reception switching device without distortion is needed.
[0004] A US patent application number US3452299 discloses a Transmit/Receive switch using PNPN unidirectional semiconductor devices. The said semiconductor devices are operated in their avalanche breakdown regions to provide a simplified, automatic, transmit-receive switch device. The first semiconductor device is placed in series with the transmitter output circuit and the second semiconductor device is connected in shunt across the receiver input circuit at a point with respect to the antenna terminals to reflect a high impedance to the terminals upon conduction of the second semiconductor device. When the transmitter is energized, both devices conduct switching RF current from the transmitter output circuit to the antenna and isolating the receiver. When the RF signals are received at the antenna neither device conducts, and the received signals are applied to the receiver. The supply for switches is derived from the transmitter RF power to provide switching action and requires no local power supply. The limitation of this circuit is that even order harmonic generation takes place in semiconductor switches due to better conduction in one direction than in the reverse direction, and moreover use of quarter wavelength resonant line in the device limits bandwidth. Further, it discloses a means to suppress even order harmonic but the degree of cancellation depends on the semiconductor device characteristic balance and the tuning of the one quarter wave resonant line. Another limitation comes due to use of transmitter power for antenna switching is that nearby high power transmitters can under certain conditions also operate the switching means and thereby interrupt operation.
[0005] A US patent application number US5054114 discloses a broadband PIN diode transmit/receive switch that uses solid state circuitry without high voltages for diode biasing. Tuned tank circuits are used in transmit and receive paths to provide broadband operation. A DC source controls the PIN diodes. When diodes are forward biased the transmitter is connected to the antenna and is provided a good impedance match over a substantial bandwidth, otherwise the receiver is connected to the antenna. PIN diodes are used for switching and lumped element equivalent to a quarter wave transmission line is provided to isolate the receiver from the transmitter. The limitation of the said circuit is that when it is used in high power applications, resulting distortion is more because of no use of reverse bias and use of quarter wave transmission line will limit bandwidth of operation.
[0006] A PCT application number WO 2014/068448 Al discloses a transmit/receive switching circuitry used in a magnetic resonance imaging system. Multiple resonant circuits and multiple diodes are used to achieve high isolation between transmitter and receiver. The resonant circuit components are chosen such that resonance occurs at MR resonant frequency 128MHz. The said circuit is limited for narrow band operation due to the use of resonant circuits, and moreover, use of multiple resonant circuits results in complex operations, and makes the switching circuitry costly.
[0007] A US patent application number US5789995 discloses a low loss electronic radio frequency (RF) switch for switching RF energy between an antenna port, a receiver port and a transmit port used in a two-way radio transceiver. This is a reactively isolated switch. This network is also known as a lumped element quarter wave section. As the name implies, when one end of the network is shorted to ground, a high impedance is seen at the opposite end of the network and when one end is terminated with the system characteristic impedance that same impedance is seen looking in the other end, much like a one quarter wavelength section of transmission line. At higher operating frequencies a quarter wave transmission line is often used in place of the lumped network in this application. This is more commonly referred to as a quarter wave isolated switch. The principle disadvantages of this topology are the bandwidth limitation as quarter wave section is only a quarter wave at a single frequency and "Q" or resistive loss in the quarter wave section (whether lumped or distributed.) The bandwidth limitation is inherent in the topology regardless of whether a lumped or distributed implementation is chosen. For best performance, the percent bandwidth of operation for the said topology should be limited to about 10%.
[0008] There is, therefore, a need in the prior art for an efficient, smart, and cost-effective RF switch that can provide wide bandwidth, high isolation with low signal loss, with few electrical components, and high power handling capability.

OBJECTS OF THE PRESENT DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[0010] It is an object of the present disclosure to provide a broadband, high power, high isolation transmit receive switch.
[0011] It is another object of the present disclosure to implement a switch using PIN diodes.
[0012] It is another object of the present disclosure to provide a switch for facilitating proper communication between a transmitter and a receiver.
[0013] It is another object of the present disclosure to provide a switch for implementing proper transmitter to receiver isolation.
[0014] It is another object of the present disclosure to provide a switch to minimize noise and harmonic regeneration.
[0015] It is another object of the present disclosure to provide a portable, fast, efficient, and cost effective switching circuit.

SUMMARY
[0016] The present disclosure relates to the field of switching in communication systems. More particularly, the present disclosure relates to a switch for facilitating communication from an antenna alternatively to a transmitter and a receiver.
[0017] An aspect of the present disclosure pertains to a switch for facilitating communication from an antenna alternatively to a transmitter and a receiver, the switch comprising: a first PIN diode configured at a transmit path that may be biased through RF choke, wherein the transmit path communicatively couples the transmitter and the antenna; a second set of PIN diodes configured in series in a receive path, wherein the receive path communicatively couples the antenna and a receiver; and a switch control unit operatively coupled to the first PIN diode and the second set of PIN diodes, the switch control unit configured to toggle biasing across the first PIN diode and the second set of PIN diodes, between a forward bias state and a reverse bias state, wherein the switch control unit forward biases the first PIN diode, and reverse biases the second set of PIN diodes to enable communication between the transmitter and the antenna, and wherein the switch control unit reverse biases the first PIN diode, and forward biases the second set of PIN diodes to enable communication between the antenna and the receiver.
[0018] In an aspect, the switch may comprise a third set of PIN diodes configured in shunt with the receive path to provide isolation between the transmitter and the receiver.
[0019] In an aspect, the switch may comprise one or more inductors of predefined inductance being configured in the receive path for facilitating impedance matching between the transmitter and the receiver.
[0020] In an aspect, the switch may comprise a first capacitor configured between the transmitter and the first PIN diode, wherein the first capacitor blocks DC signals during the transmission.
[0021] In an aspect, the switch may comprise any or a combination of a set of coupling capacitors and a set of decoupling capacitors to facilitate communication between the transmitter and the receiver.
[0022] In an aspect, the switch may comprise one or more inductors configured to remove harmonics from signals during the communication.
[0023] In an aspect, the switch control unit may provide a predefined low voltage to cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the forward biased state.
[0024] In an aspect, the switch may comprise a boost converter to provide the predefined high voltage.
[0025] In an aspect, the switch control unit may provide a predefined high voltage to the cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the reverse biased state.
[0026] In an aspect, the switch may be configured to operate over a broad range of frequency.

BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0028] The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[0029] FIGs. 1A- 1C illustrates circuit diagram of the proposed switch to illustrate its overall working in accordance with an embodiment of the present disclosure.
[0030] FIGs. 2A-2C illustrates exemplary graphical representations associated with transmit path and receive path, in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[0031] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0032] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0033] In some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[0034] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0035] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0036] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[0037] The present disclosure relates to the field of switching in communication systems. More particularly, the present disclosure relates to a switch for facilitating communication from an antenna alternatively to a transmitter and a receiver.
[0038] According to an aspect the present disclosure pertains to
a switch for facilitating communication from an antenna alternatively to a transmitter and a receiver, the switch can be including: a first PIN diode configured at a transmit path that can be biased through RF choke, wherein the transmit path communicatively couples the transmitter and the antenna; a second set of PIN diodes configured in series in a receive path, wherein the receive path communicatively couples the antenna and a receiver; and a switch control unit operatively coupled to the first PIN diode and the second set of PIN diodes, the switch control unit configured to toggle biasing across the first PIN diode and the second set of PIN diodes, between a forward bias state and a reverse bias state, wherein the switch control unit forward biases the first PIN diode, and reverse biases the second set of PIN diodes to enable communication between the transmitter and the antenna, and wherein the switch control unit reverse biases the first PIN diode, and forward biases the second set of PIN diodes to enable communication between the antenna and the receiver.
[0039] In an embodiment, the switch can include a third set of PIN diodes configured in shunt with the receive path to provide isolation between the transmitter and the receiver.
[0040] In an embodiment, the switch can include one or more inductors of predefined inductance being configured in the receive path for facilitating impedance matching between the transmitter and the receiver.
[0041] In an embodiment, the switch can include a first capacitor configured between the transmitter and the first PIN diode, wherein the first capacitor blocks DC signals during the transmission.
[0042] In an embodiment, the switch can include any or a combination of a set of coupling capacitors and a set of decoupling capacitors to facilitate communication between the transmitter and the receiver.
[0043] In an embodiment, the switch can include one or more inductors configured to remove harmonics from signals during the communication.
[0044] In an embodiment, the switch control unit can provide a predefined low voltage to cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the forward biased state.
[0045] In an embodiment, the switch can include a boost converter to provide the predefined high voltage.
[0046] In an embodiment, the switch control unit can provides predefined high voltage to the cathode of the first PIN diode and the second set of PIN diodes to switch any or a combination of the first PIN diode and the second set of PIN diodes in the reverse biased state.
[0047] In an embodiment, the switch can be configured to operate over a broad range of frequency.
[0048] FIGs. 1A-1C illustrates circuit diagram of the proposed switch 100 to illustrate its overall working in accordance with an embodiment of the present disclosure.
[0049] As illustrated in FIGs. 1A-1C, in an embodiment, the proposed switch 100 is coupled between a transmitter 101 and a receiver 103, and can be configured to facilitate communication, through an antenna 102, between the transmitter 101 and the receiver 103. In an embodiment, a first PIN diode CR1 can be configured at a transmit path that can be biased through an RF choke L1, such that the transmit path can communicatively couple the transmitter 101 and the antenna 102. The circuit of the proposed switch 100 can include a second set of PIN diodes (also, referred to as second PIN diodes, or PIN diodes, herein), which can include a PIN diode CR2 and a PIN diode CR3, can be configured in series in a receive path, and the receive path can communicatively couple the antenna 102 and the receiver 103.
[0050] In an embodiment, there can be a switch control unit (not shown), which can be operatively coupled to the first PIN diode CR1 and the second PIN diodes, i.e., the PIN diode CR2 and the PIN diode CR3. The switch control unit can be configured to toggle biasing across the first PIN diode CR1 and the second set of PIN diodes, between a forward bias state and a reverse bias state. In an illustrative embodiment, the switch control unit can be configured to forward bias the first PIN diode CR1, and reverse bias the PIN diode CR2 and the PIN diode CR3, to enable communication between the transmitter 101 and the antenna 102. In another illustrative embodiment, the switch control unit can be configured to reverse bias the first PIN diode CR1, and forward bias the second set of PIN diodes (bias the PIN diode CR2 and the PIN diode CR3) to enable communication between the antenna 102 and the receiver 103.
[0051] In an illustrative embodiment, the proposed switch 100 can act as a broadband transmit/receive switch, and can be configured as a solid state switch, which can be used for connecting the antenna 102 alternatively to the transmitter 101 and the receiver 103, in a wireless communication system. The proposed switch 100 can act as a broadband RF single pole double throw (also, referred to as SPDT) switch circuit for transmit/receive switching using any or a combination of the PIN diodes CR1, CR2, and CR3, that can handle high power and can provide high isolation between the transmitter 101 and the receiver 103.
[0052] In an embodiment, the said PIN diodes can be biased using two predefined voltage levels referenced as low and high voltages. In an illustrative embodiment, the low voltage can be the main supply for the proposed switch 100. In an embodiment, the high voltage can be derived from the low voltage using a boost converter 104, and switching ON and OFF of the said PIN diodes can be carried out by toggling the voltage applied at cathode terminal of the PIN diodes between zero volt and high voltage, which can be performed using FET switches 105.
[0053] In an embodiment, during transmission, to transmit RF signal, the transmitter 101 can be coupled to the first PIN diode CR1 using a first capacitor C1 (also, referred to as RF coupling capacitor C1, herein), which can also be used to block DC voltage applied to cathode terminal of the first PIN diode CR1. In an illustrative embodiment, voltage at cathode terminal of the first PIN diode CR1 can be applied via an inductor L2 (also, referred to as RF choke L2, herein) and is toggled between a predefined high voltage and a predefined low voltage, which can be zero, here, using a switch control unit 105. In an embodiment, a fixed low voltage potential that is common to the first PIN diode CR1 and the PIN diode CR2, can be applied to anode terminals of both the PIN diodes via an RF choke L1.
[0054] In an embodiment, the RF signal from the PIN diode CR1 can be transmitted to the antenna 102 using an RF coupling capacitor C4, which can be common to the transmitter 101 and the receiver 103 sections and, can also be used to block DC voltage from reaching the antenna 102. In an illustrative embodiment, anode terminals of the first PIN diode CR1 and the PIN diode CR2 can be connected to the capacitor C4.
[0055] In an embodiment, during reception, the RF signal received at the antenna 102, can be fed to the PIN diode CR2 via the capacitor C4. In an illustrative embodiment, voltage at cathode terminals of the PIN diode CR2 and the PIN diode CR3 can be applied via an RF choke L3. The said voltage can be toggled between the predefined high voltage and the predefined low voltage using the switch control 105.
[0056] In an embodiment, an inductor L4 can be configured to provide impedance match between the cathode terminals of the PIN diode CR2 and the PIN diode CR3. In an embodiment, a fixed low voltage potential, which is common to the PIN diode CR3 and a PIN diode CR4, can be applied to anode terminals of the said diodes via an RF choke L5. The received signal from the PIN diode CR3 can be provided to the receiver 103 via RF coupling capacitors C9, C10 and an inductor L6.
[0057] Ina an embodiment, a PIN diode CR5, which can act as a switch, can be connected in shunt with the receive path to provide better isolation. A fixed low voltage potential can be applied to anode terminal of the PIN diode CR5 via an RF choke L7. In an illustrative embodiment, voltage at cathode terminals of the PIN diodes CR4 and CR5 can be toggled between the predefined high voltage and the predefined low voltage using the switch control 105.
[0058] In an implementation, a capacitor C10 can be connected between ground and cathode terminals of the PIN diode CR5, and a capacitor C8 can be connected between ground and cathode terminals of the PIN diode CR4 to provide RF ground.
[0059] In an implementation, during transmission, the PIN diodes CR1, CR4 and CR5 can be forward biased by applying zero voltage potential at cathode terminals of the said PIN diodes, and the PIN diodes CR2 and CR3 can be reverse biased by applying high voltage potential at cathode terminals of the said PIN diodes. The high voltage potential applied at the switches cathode terminals for reverse biasing can be chosen such that it is greater than peak RF voltage that the proposed broadband transmit/receive switch 100 is required to handle. This can be done to minimize distortion.
[0060] In an illustrative embodiment, the first PIN diode CR1 can be in series configuration in the transmit path, and the PIN diodes CR4 and CR5 can be in shunt configuration in receive path. The PIN diodes CR2 and CR3 can be in series configuration in the receive path. In an embodiment, during signal reception, the PIN didoes CR1, CR4 and CR5 can be reverse biased with application of high voltage potential at cathode terminals of the said PIN diodes, and the PIN diodes CR2 and CR3 can forward biased with application of zero voltage potential at cathode terminals of the said PIN diodes.
[0061] In an embodiment, the proposed switch 100 can facilitate achieving of good isolation between the transmitter 101 and the receiver 103, without using any quarter wavelength transmission line or its lumped element equivalent. In an illustrative embodiment, the inductors L4, L6 can be optimised to minimize insertion loss associated with the receive path, and also to eliminate harmonic regeneration. In an illustrative embodiment, the RF chokes L1, L2, L3, L5, L7, and the RF coupling capacitors C1, C4, C9, and C10 can be optimized to achieve broadband performance. The capacitors C2, C3, C5, C6, C7, C8, and C10 can act as RF decoupling capacitors.
[0062] In an embodiment, the proposed disclosure can be associated with a method of printed circuit board (also, referred to as PCB, herein) designing of switch circuit. In an illustrative embodiment, a micro-strip transmission line with 50O characteristic impedance can be used within a PCB with proper track widths for high power handling. Board design of broadband transmit/receive switch 100 can be done in such a way to miniaturize the overall circuit. The broadband transmit/receive switch 100 can offer miniaturization, high power handling, high speed and high isolation characteristics.
[0063] In an illustrative embodiment, the proposed switch 100 can be configured to operate at 150W CW RF input power capability performing linear operation, and can cover VUHF frequency band (30-512MHZ). In an embodiment, the proposed switch 100 can provide a better transmitter to receiver isolation that can be more than 50dB. The proposed switch can be operated through a single supply of 5 Volts, and high voltage that can be used to reverse bias the said PIN diode switches can be derived from 5 Volts supply using the boost converter 104. The proposed switch 100 can be configured in such a way that it occupies minimum PCB layout compared to quarter wavelength techniques.
[0064] In an embodiment, in the proposed switch 100, use of inductors in combination with high voltage is done to minimize harmonic regeneration.
[0065] The present disclosure is not limited to the particular details of the proposed witch 100 that are depicted, and other modifications and applications can be contemplated. Certain other changes may be made in the above described circuitry without departing from the true spirit and scope of the invention herein involved. For example, different types of PIN diodes can be used for CR1, CR2, CR3, CR4, and CR5 for better power handling capability. One skilled in the art would be able to acknowledge correct polarity of control voltages for operating the switches according to the present invention. The proposed switch can be integrated with any or a combination of P MOSFET and N MOSFET to provide a fast switching control circuit to cater to time division duplex (TDD) applications. It is intended, therefore, that the subject matter in the above depiction shall be interpreted as illustrative and not in a limiting sense.
[0066] FIGs. 2A-2C illustrates exemplary graphical representations associated with transmit path and receive path, in accordance with an exemplary embodiment of the present disclosure.
[0067] As illustrated, in an embodiment, FIG. 2A can illustrate graphical representation associated with transmit path insertion loss associated with the proposed switch 100, and FIG. 2B can illustrate graphical representation associated with receive path insertion loss associated with the proposed switch 100. In an embodiment, insertion loss can be defined as loss of signal power due to insertion of a device, or element, here, the proposed switch 110 in the transmit path or the receive path. It can be observed that the insertion losses associated with the proposed switch 100 are minimum.
[0068] As illustrated, in an embodiment, FIG. 2C can illustrate graphical representation associated with isolation between the transmit path and the receive path. It can be observed that an efficient isolation can be maintained between the transmit path and the receive path, by changing biasing of related PIN diodes, and hence, reduction of noise to a minimal level can be achieved using the proposed switch 100.
[0069] Thus, it will be appreciated by those of ordinary skill in the art that the diagrams, schematics, illustrations, and the like represent conceptual views or processes illustrating systems and methods embodying this invention. The functions of the various elements shown in the figures may be provided through the use of dedicated hardware as well as hardware capable of executing associated software. Similarly, any switches shown in the figures are conceptual only. Their function may be carried out through the operation of program logic, through dedicated logic, through the interaction of program control and dedicated logic, or even manually, the particular technique being selectable by the entity implementing this invention. Those of ordinary skill in the art further understand that the exemplary hardware, software, processes, methods, and/or operating systems described herein are for illustrative purposes and, thus, are not intended to be limited to any particular named.
[0070] While embodiments of the present invention have been illustrated and described, it will be clear that the invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the invention, as described in the claim.
[0071] In the foregoing description, numerous details are set forth. It will be apparent, however, to one of ordinary skill in the art having the benefit of this disclosure, that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form, rather than in detail, to avoid obscuring the present invention.
[0072] As used herein, and unless the context dictates otherwise, the term "coupled to" is intended to include both direct coupling (in which two elements that are coupled to each other contact each other)and indirect coupling (in which at least one additional element is located between the two elements). Therefore, the terms "coupled to" and "coupled with" are used synonymously. Within the context of this document terms "coupled to" and "coupled with" are also used euphemistically to mean “communicatively coupled with” over a network, where two or more devices are able to exchange data with each other over the network, possibly via one or more intermediary device.
[0073] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced.
[0074] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE PRESENT DISCLOSURE
[0075] The present disclosure provides a broadband, high power, high isolation transmit receive switch.
[0076] The present disclosure provides a way to implement a switch using PIN diodes.
[0077] The present disclosure provides a switch for facilitating proper communication between a transmitter and a receiver.
[0078] The present disclosure provides a switch for implementing proper transmitter to receiver isolation.
[0079] The present disclosure provides a switch to minimize noise and harmonic regeneration.
[0080] The present disclosure provides a portable, fast, efficient, and cost effective switching circuit.