CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
[001] The present application does not claim priority from any patent application.
TECHNICAL FIELD
[002] The present disclosure in general relates to the field of Wireless transfer. More particularly, the present subject matter relates to a system and a method for resisting interference during a wireless transfer.
BACKGROUND
[003] Nowadays, modern wireless power and data transfer systems in applications such as medical implant, cochlear implant predominantly operate in the high frequency (HF) ISM bands. Further, the wireless systems generally use one or other unlicensed ISM band allocated for different geographies and with different regulatory requirements. Typically, the data rate is also directly related to the frequency band of interest, meaning that a higher frequency has better chances of transferring higher amount of data with better integrity. Typically, the wireless systems are prone to interference as some of the ISM bands are spectrally crowded. Further, the crowding varies from geography to geography and local radio deployment conditions.
SUMMARY
[004] Before the present system and a method for resisting interference during a wireless transfer are described, it is to be understood that this application is not limited to a particular system, systems, and methodologies described, as there can be multiple possible embodiments, which are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular implementations, versions, or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to a system and a method for resisting interference during a wireless transfer. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.
[005] In one embodiment, a method for resisting interference during a wireless transfer is disclosed. In the embodiment, the method comprises generating, by a feedback circuit, data associated with one or more performance parameter. Upon generating the feedback, the method comprises identifying, by a controller, an interference based on a comparison of the performance parameters and a predefined threshold and generating, by the controller, a command based on the identification. In one example, the command comprises one of a switching command or a maintain command. Further to generating the command, the method comprises generating, by a carrier circuit, one of a second carrier frequencies from the set of carrier frequencies based on the switching command. Subsequently to generating command, the mended comprises tuning, by a resonance circuit, the antenna to the second carrier frequency from an initial carrier frequency, thereby resisting interference in a wireless transfer.
[006] In one embodiment, a system for resisting interference during a wireless transfer is disclosed. The system comprises an antenna coil tuned on a carrier frequency from a set of carrier frequencies for wireless transfer and a feedback circuit, and wherein the feedback circuit generates data associated with one or more performance parameters. The system further comprises a controller connected to the feedback circuit. In one example, the controller identifies an interference in the wireless transfer based on a comparison of the performance parameters and a predefined threshold; and generates a command based on the identification, and wherein the command comprises one of a switching command or a maintain command. The system further comprises a carrier circuit connected to the controller, and wherein the carrier circuit generates one of a second carrier frequencies from the set of carrier frequencies based on the switching command. The system furthermore comprises a resonance circuit connected to a carrier circuit, wherein the resonance circuit tunes the antenna to the second carrier frequency, thereby resisting interference in a wireless transfer.
BRIEF DESCRIPTION OF DRAWINGS
[007] The foregoing detailed description of embodiments is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present subject matter, an example of construction of the present subject matter is provided as figures; however, the present subject matter is not limited to the specific method and system disclosed in the document and the figures.
[008] The present subject matter is described in detail with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer various features of the present subject matter.
[009] Figure 1 illustrates a block diagram a system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter.
[0010] Figure 2A illustrates an embodiment of the system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter.
[0011] Figure 2B illustrates one more embodiment of the system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter.
[0012] Figure 2C illustrates one another embodiment of the system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter.
[0013] Figure 2D illustrates an antenna circuit of the system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter
[0014] Figure 3 illustrates a method for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter.
DETAILED DESCRIPTION
[0015] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising," "having," "containing," and "including," and other forms thereof, are intended to be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although any system and method for resisting interference during a wireless transfer, similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, system and method for resisting interference during a wireless transfer are now described.
[0016] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments for resisting interference during a wireless transfer. However, one of ordinary skill in the art will readily recognize that the present disclosure for resisting interference during a wireless transfer is not intended to be limited to the embodiments described, but is to be accorded the widest scope consist in this regard, in a generic sense, a wireless system operating at a particular date rate might experience interference in a particular geography while the same system might be interference-free when operated in another geography.
[0017] As described, wireless systems are prone to interference. In in the medical implant applications such as cochlear implant, the interference could be have harmful impact to the end user’s health.
[0018] In one embodiment, a system for resisting interference during a wireless transfer is disclosed. In one example, the system is a near field and inductive resonant type of coil-to-coil coupling system. The system comprises an antenna coil tuned on a carrier frequency from a set of carrier frequencies for wireless transfer and a feedback circuit, and wherein the feedback circuit generates data associated with one or more performance parameters. The system further comprises a controller connected to the feedback circuit. In one example, the controller identifies an interference in the wireless transfer based on a comparison of the performance parameters and a predefined threshold; and generates a command based on the identification, and wherein the command comprises one of a switching command or a maintain command. The system further comprises a carrier circuit connected to the controller, and wherein the carrier circuit generates one of a second carrier frequencies from the set of carrier frequencies based on the switching command. The system furthermore comprises a resonance circuit connected to a carrier circuit, wherein the resonance circuit tunes the antenna to the second carrier frequency, thereby resisting interference in a wireless transfer.
[0019] Exemplary embodiments for a vehicle body side structure discussed above may provide certain advantages. In one embodiment, the present subject matter enables a varying and flexible data rate as well as ensure system level architectural re-configurability to operate at more than one predefined ism frequency bands for interference-free experience.
[0020] Referring now to Figure 1, a block diagram a system 100 for resisting interference during a wireless transfer is disclosed. Referring to Figure 2A an embodiment of the system 100 for resisting interference during a wireless transfer, is disclosed. Referring to Figure 2B illustrates one more embodiment of the system for resisting interference during a wireless transfer, is disclosed. Referring to Figure 2C illustrates one another embodiment of the system for resisting interference during a wireless transfer, is disclosed. Referring to Figure 2D illustrates an antenna circuit of the system for resisting interference during a wireless transfer, in accordance with an embodiment of the present subject matter. Further, table 1 provided the details of the references numbers in the figures.
Ref No Definition Ref No Definition
100 System 302 Antenna Tuning Circuit
102 Carrier circuit 304 Source side (from high frequency amplifier O/P)
104 Resonance circuit 309 Primary Coil
106 Transistor circuit 308 Secondary Coil
108 Receiver circuit 310 Load side (to receive power and data recovery circuit)
110 Secondary feedback circuit 218 Bi-directional coupler
112 Primary Feedback Circuit 220 BER feedback
114 Controller 222 Voltage feedback
201 Tuned Circuits (6.78, 13.56, 27.12, 40.68) MHz 224 Voltage meter
203 SP4T switch 226 BER meter
210 Modulator/Demodulator 228 Harmonic Multiplier
206 Aggressor-TX RF(co-located) 216 Forward path power Detector and reverse Path Power Detector elements
214 High Efficiency amplifier 217 Radio Channel
215 Tuned Circuits (6.78, 13.56, 27.12, 40.68) MHz
[0021] Further, in the subsequent description, embodiments of the present subject along with the advantages are explained in detail with reference to the Figures 1 to Figure 2D.
[0022] In one embodiment, a system 100 for resisting interference during a wireless transfer and variable data rate transfer over a wireless link which is interference-free. Further, the system comprises Frequency selective ‘Switchable’ impedance matching circuits, Harmonic generation of different CLK signals, and Closed-loop F/B path for the Forward (FWD) link as well as Reverse (REV) link.
[0023] In one embodiment, a system 100 comprises an antenna coil tuned on a carrier frequency from a set of carrier frequencies for wireless transfer. The antenna coil comprises one or more of a transmitter circuit 106 and a receiver circuit 108. In one example, the set of carrier frequencies comprises are ISM band frequencies that are harmonic of each other, such as 6.78MHz, 13.56MHz, 27.12MHz, and 40.68MHz. In one more example, the antennas 106, 108 are wideband and switchable frequency selective radio frequency coil antennas. Further, the system 100 comprises a feedback circuit. In one implementation, the feedback circuit comprises a primary feedback circuit 112 connected to a transmitter side of the antenna and a secondary feedback circuit 110 connected to a receiver side of the antenna. In one example, the primary feedback circuit comprises Forward path power Detector and reverse Path Power Detector elements 216. In embodiment, using forward path power Detector and reverse Path Power Detector elements 216, the forward and reverse power is sampled respectively and then compared against each other such the system 100 knows the presence of the Interferer [aggressor] signal and the feedback system works based on Power and Noise monitoring method effectively. Furthermore, the system 100 comprises a controller 114 connected to the feedback circuit, a carrier circuit 102 connected to the controller 114 and a resonance circuit 104 connected to a carrier circuit 102.
[0024] In one embodiment the carrier circuit 102 may be one of referring to, the system 100 comprises Switchable ‘multiple’ radio frequency (RF) clock scheme (6.78MHz, 13.56MHz, 27.12MHz, 40.68MHz) (as shown in Figure 2A) or a Single radio frequency clock pulse scheme for 6.78MHz and along with Switchable Harmonic generation & filtering circuit [2nd, 4th, 6th harmonic for 13.56MHz, 27.12MHz and 40.68MHz respectively) (as shown in Figure 2B). Further, as shown in figure the system 100 may comprises switchable and frequency selective RF filtering circuit. In one embodiment, the feedback circuit may be wideband RF filtering circuit feedback loop based comparison and decision scheme utilising a) forward as well as reverse path RF power detection, b) RF noise-rise detection, c) voltage recovery impact detection, d) BER impact detection. G. Further, the system 100 may comprise wideband class-e amplifier and its switchable RF impedance matching circuit. Further the antenna coil may be wideband RF coils.
[0025] In one embodiment, during operation, the feedback circuit 112, 110 generates data associated with one or more performance parameters. In one example, the performance parameters comprises one or more of a bit error rate [BER], a radio frequency power efficiency, a voltage, a voltage level, a voltage recovered, a radio frequency in-band noise rise, and a radio frequency out of band noise rise. Upon generating feedback, the controller 114 identifies an interference in the wireless transfer based on a comparison of the performance parameters and a predefined threshold and generates a command based on the identification. In one example, the feedback is used such that if the performance parameters are above the pre-defined threshold, then an internal control signal of the controller 114 gets activated and through the usage of a GPIO (General Purpose I/O) pin of the central controller, the RF SP4T switch control blocks gets required digital logic levels to switch from one circuit path to another circuit path. This helps to switch to switch from one RF frequency path to a different frequency path and/or a different Frequency-specific line of RF blocks. The controller 114 uses the Look up Table (LUT) based comparison method such that it generates the control signal needed to control the external RF SP4T switches.
[0026] In one more example, the controller 114 may alternatively identify a link quality between the antennas. In one other example, performance parameters such as power efficiency, and voltage recovered which are less complex type of information may be used as a first indication and then if that is also not very conclusive, other more robust parameters parameter estimations may be used such as BER, OOB Noise. In one more example, staggered type of approach on performance parameters comparison such as Voltage->Power->Noise->BER order i.e. from simple to more advanced type may be used. In one example, the command comprises one of a switching command or a maintain command. In one example, the controller may generate a command based on user instructions, such as pressing of a switch. Further to generating a command, the carrier circuit generates one of a second carrier frequencies from the set of carrier frequencies based on the switching command. Subsequent to generating a second carrier frequency, the resonance circuit 104 tunes the antenna 106,108 to the second carrier frequency, thereby resisting interference in a wireless transfer.
[0027] In one example, the multi-frequency switchable Antenna and antenna-matching circuit (as shown in figure 2D) exploits multiple switching paths and with the help of two SP4T [Single Pole 4 Throw] switches. This circuit combination operates such that for any of the FOUR operating frequencies, only ONE is operational at a time. Once an interference is detected, the Central processor/controller block gets the feedback from the different RF feedback parameters, sends its o/p to the antenna SP4T switch blocks such that the antenna is switched from one frequency to another frequency, with the help of its associated matching circuits.
[0028] Exemplary embodiments for resisting interference during a wireless transfer discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages, without limitation, are the following.
[0029] Some embodiments of the system and the method reduces interference from Co-Located and Co-Existing Radios.
[0030] Some embodiments of the system and the method enables flexible choice for power transfer efficiency vs. interference reduction vs. data rate selection.
[0031] Some embodiments of the system and the method enables flexibility in reduced FCC re emission levels.
[0032] Some embodiments of the system and the method enables Flexible choice of Adaptive Frequency Selection vs. Semi-Adaptive ‘One-Time’ Frequency Switching or Manual Observation.
[0033] Some embodiments of the system and the method can be integrated into an RFIC+BBIC type of implementation and hence can also be used in Medical Implants using WPT scheme.
[0034] Some embodiments of the system and the method are power efficient, more compact with less complex design.
[0035] Some embodiments of the system and the method do not require channel hop controller/selector/identifier type of more complex systems
[0036] Some embodiments of the system and the method are consume low power.
[0037] Referring now to figure 3, a method 300 for resisting interference during a wireless transfer using a system 100, is disclosed in accordance with an embodiment of the present subject matter. The order in which the method 300 for resisting interference during a wireless transfer using a system 100 is described is not intended to be construed as a limitation, and any number of the described method blocks can be combined in any order to implement the method 300 or alternate methods. Additionally, individual blocks may be deleted from the method 300 without departing from the spirit and scope of the subject matter described herein. Furthermore, the method 300 can be implemented in any suitable hardware, software, firmware, or combination thereof. However, for ease of explanation, in the embodiments described below, the method 300 for resisting interference during a wireless transfer using a system 100 may be considered to be implemented in the above-described system 100.
[0038] At block 302, data associated with one or more performance parameters is generate, by a feedback circuit.
[0039] At block 304, an interference based on a comparison of the performance parameters and a predefined threshold is identified by a controller.
[0040] At block 306, a command generated by the controller based on the identification. In one example, the command comprises one of a switching command or a maintain command.
[0041] At block 308, one of a second carrier frequencies may be generated, by a carrier circuit, from the set of carrier frequencies based on the switching command.
[0042] At block 310, the antenna may be tuned to the second carrier frequency from an initial carrier frequency, by a resonance circuit, thereby resisting interference in a wireless transfer.
[0043] Although implementations for methods and systems for resisting interference during a wireless transfer have been described in language specific to features, system and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features or methods for resisting interference during a wireless transfer described. Rather, the specific features and methods are disclosed as examples of implementations for resisting interference during a wireless transfer.

Claims:1. A system for resisting interference during a wireless transfer, wherein the system comprising:
an antenna circuit tuned on a carrier frequency from a set of carrier frequencies for a wireless transfer,
a feedback circuit, and wherein the feedback circuit generates data associated with one or more performance parameters;
a controller connected to the feedback circuit, and wherein the controller
identifies an interference in the wireless transfer based on a comparison of the performance parameters and a predefined threshold; and
generates a command based on the identification, and wherein the command comprises one of a switching command or a maintain command;
a carrier circuit connected to the controller, and wherein the carrier circuit generates one of a second carrier frequencies from the set of carrier frequencies based on the switching command; and
a resonance circuit connected to a carrier circuit, wherein the resonance circuit tunes the antenna to the second carrier frequency, thereby resisting the interference in the wireless transfer.

2. The system of claim 1, wherein the antenna coil comprises one or more of a transmitter coil and a receiver coil.

3. The system of claim 1, wherein the performance parameters comprises one or more of a bit error rate [BER], a radio frequency power efficiency, a voltage, a radio frequency in-band noise rise, a radio frequency out of band noise rise.

4. The system of claim 1, wherein the set of carrier frequencies comprises one or more harmonic carrier frequencies.

5. The system of claim 1, wherein the feedback circuit comprise a primary feedback circuit connected to a transmitter side of the antenna and a secondary feedback circuit connected to a receiver side of the antenna.

6. A method of resisting interference in a wireless transfer, wherein the method comprises:
generating, by a feedback circuit, data associated with one or more performance parameters;
identifying, by a controller, an interference based on a comparison of the performance parameters and a predefined threshold; and
generating, by the controller, a command based on the identification, and wherein the command comprises one of a switching command or a maintain command;
generating, by a carrier circuit, one of a second carrier frequencies from the set of carrier frequencies based on the switching command; and
.

7. The method of claim 6, wherein the feedback information comprises one or more of a bit error rate [BER], power efficiency, voltage, in-band/ out of band noise rise.

8. The method of claim 6, wherein the set of carrier frequencies comprises one or more harmonic carrier frequencies.

9. The method of claim 6, wherein the feedback circuit comprise a primary feedback circuit connected to a transmitter side of the antenna and a secondary feedback circuit connected to a receiver side of the antenna.