Methods for tuning an adaptive impedance matching network with a look-up table
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H03H-007/40
H03H-011/30
H04B-001/04
H01Q-001/50
출원번호
US-0596872
(2015-01-14)
등록번호
US-9698758
(2017-07-04)
발명자
/ 주소
Spears, John Hanford
Smith, Wayne Eric
Sui, Chenggang
Zhu, Yongfei
출원인 / 주소
BlackBerry Limited
대리인 / 주소
Guntin & Gust, PLC
인용정보
피인용 횟수 :
9인용 특허 :
262
초록▼
Methods for generating a look-up table relating a plurality of complex reflection coefficients to a plurality of matched states for a tunable matching network. Typical steps include measuring a plurality of complex reflection coefficients resulting from a plurality of impedance loads while the tunab
Methods for generating a look-up table relating a plurality of complex reflection coefficients to a plurality of matched states for a tunable matching network. Typical steps include measuring a plurality of complex reflection coefficients resulting from a plurality of impedance loads while the tunable matching network is in a predetermined state, determining a plurality of matched states for the plurality of impedance loads, with a matched state determined for each of the plurality of impedance loads and providing the determined matched states as a look-up table. A further step is interpolating the measured complex reflection coefficients and the determined matching states into a set of complex reflection coefficients with predetermined step sizes.
대표청구항▼
1. An apparatus, comprising: a tunable impedance matching network including a tunable reactive element, the tunable impedance matching network being coupled with an antenna of a communication device and positioned between the antenna and a power amplifier of the communication device;a controller cou
1. An apparatus, comprising: a tunable impedance matching network including a tunable reactive element, the tunable impedance matching network being coupled with an antenna of a communication device and positioned between the antenna and a power amplifier of the communication device;a controller coupled with the tunable impedance matching network; anda detector coupled with the controller and positioned between the tunable impedance matching network and the power amplifier,wherein the controller obtains parameters via the detector for forward and reverse signals at a port of the tunable impedance matching network,wherein the controller adjusts the tunable reactive element according to the parameters to perform impedance matching by locating an impedance mismatch entry in a lookup table accessible to the controller that approximates an impedance mismatch, wherein the lookup table does not include s-parameters, and wherein the locating the impedance mismatch entry in the lookup table does not utilize a calculation of the s-parameters during the impedance matching. 2. The apparatus of claim 1, wherein the lookup table comprises a plurality of complex reflection coefficients predetermined by measuring a signal at the port of the tunable impedance matching network for a plurality of impedance loads of the antenna. 3. The apparatus of claim 2, wherein the controller adjusts the tunable reactive element according to the tunable reactive setting by separating a first tuning step into a plurality of tuning steps. 4. The apparatus of claim 1, wherein the reactive element comprises a variable capacitor. 5. The apparatus of claim 4, wherein the variable capacitor comprises a voltage-controlled variable ferroelectric capacitor. 6. The apparatus of claim 5, further comprising digital to analog converters, wherein the controller adjusts the voltage-controlled variable ferroelectric capacitor utilizing the digital to analog converters. 7. The apparatus of claim 1, wherein the tunable reactive element consists of two voltage tunable capacitors. 8. The apparatus of claim 1, wherein the tunable reactive element comprises a micro-electro-mechanical systems (MEMS) device. 9. The apparatus of claim 1, wherein the tunable reactive element comprises a semiconductor device. 10. The apparatus of claim 1, wherein the parameters are obtained via the detector while the tunable impedance matching network is in a predetermined state. 11. The apparatus of claim 1, wherein the communication device is a mobile phone. 12. A communication device, comprising: an antenna;a tunable impedance matching network coupled with the antenna, wherein the tunable impedance matching network includes a tunable reactive element;a detector coupled with the tunable impedance matching network;a memory that stores instructions and a look-up table; anda processor coupled to the memory, the detector and the tunable impedance matching network, wherein responsive to executing the instructions, the processor performs operations comprising: obtaining one or more parameters via the detector for forward and reverse power associated with the tunable impedance matching network;determining according to the one or more parameters and according to band information, an impedance mismatch caused by a change in impedance of the antenna;locating, in the look-up table, an impedance mismatch entry that approximates the impedance mismatch, wherein the look-up table comprises a plurality of complex reflection coefficients predetermined by measuring a signal at a terminal of the tunable impedance matching network for a plurality of impedance loads of the antenna; andadjusting the tunable reactive element according to selected complex reflection coefficients from among the plurality of complex reflection coefficients to perform impedance matching, wherein the lookup table does not include s-parameters, and wherein the locating the impedance mismatch entry in the lookup table does not utilize a calculation of the s-parameters during the determining of the impedance mismatch. 13. The communication device of claim 12, wherein the reactive element comprises a variable capacitor. 14. The communication device of claim 13, wherein the variable capacitor comprises a voltage-controlled variable ferroelectric capacitor. 15. The communication device of claim 14, further comprising a digital to analog converter, wherein the operations further comprise adjusting the voltage-controlled variable ferroelectric capacitor utilizing the digital to analog converter. 16. The communication device of claim 12, wherein the tunable reactive element comprises a micro-electro-mechanical systems (MEMS) device. 17. The communication device of claim 12, wherein the tunable reactive element comprises a semiconductor device. 18. The communication device of claim 12, wherein the parameters are obtained via the detector while the tunable impedance matching network is in a predetermined state. 19. A method, comprising: obtaining, by a processor of a communication device, one or more parameters via a detector of the communication device for forward and reverse power associated with a tunable impedance matching network of the communication device;determining, by the processor according to the one or more parameters and according to band information, an impedance mismatch caused by a change in impedance of an antenna of the communication device;locating, by the processor in a lookup table, an impedance mismatch entry that approximates the impedance mismatch, wherein the lookup table comprises predetermined tuning information that is measured for signals at a terminal of the tunable impedance matching network for a plurality of impedance loads of the antenna; andadjusting, by the processor, a tunable reactive element of the tunable impedance matching network according to selected tuning information from among the predetermined tuning information to perform impedance matching, wherein the lookup table does not include s-parameters, and wherein the locating the impedance mismatch entry in the lookup table does not utilize a calculation of the s-parameters during the determining of the impedance mismatch. 20. The method of claim 19, wherein the predetermined tuning information comprises a plurality of complex reflection coefficients.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (262)
O\Keefe Gerald T. (San Mateo CA), AM Broadcast tuner with automatic gain control.
Edmonson, Peter J.; Campbell, Colin K., Adaptive tuning device and method utilizing a surface acoustic wave device for tuning a wireless communication device.
Bradley Donald A. (Morgan Hill CA) Grace Martin I. (San Jose CA) Thornton Douglas R. (Felton CA) Finch David P. (Morgan Hill CA), Apparatus and method for measuring the phase and magnitude of microwave signals.
Ella, Juha S.; Kylakoski, Janne P., Apparatus comprising an antenna element, which efficiently performs at both a first resonant frequency band and a second resonant frequency band, method and computer program therefore.
Fraser Randall S. (Plantation FL) Buu Tam-Thanh C. (Sunrise FL) Ruelke Charles R. (Davie FL), Automatically controlled varactor tuned matching networks for a crystal filter.
Jackson, Robert; Joseph, Abner D.; Terry, Don S.; White, Perry K., Capacitor employing both fringe and plate capacitance and method of manufacture thereof.
Chiu Luna H. ; Sengupta Louise C. ; Stowell Steven ; Sengupta Somnath ; Synowczynski Jennifer, Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide.
Sengupta Louise C. (Woburn MA) Ngo Eric (Brighton MA) Stowell Steven (Jamaica Plain MA) Gilde Gary (Brighton MA) Lancto Robert (Wakefield MA), Ceramic ferroelectric material.
Johnson David C. (Winston Salem NC) Renn Robert M. (Pfafftown NC) Volz Keith L. (Jamestown NC) Deak Frederick R. (Kernersville NC), Computer docking system.
Gaudin Daniel (Paris FRX) Le Gars Philippe (Paris FRX), Device for detecting the optimum anode load impedance of a tube transmitter in a high frequency transmission chain.
Sengupta Louise C. (Woburn MA) Ngo Eric (Brighton MA) O\Day Michelina E. (Woburn MA) Stowell Steven (Boston MA) Lancto Robert (Wakefield MA) Sengupta Somnath (Woburn MA) Hynes Thomas V. (Nashua NH), Electronically graded multilayer ferroelectric composites.
Chatzipetros, Argyrios A.; Patsiokas, Stelios, Electronically steerable antenna array using user-specified location data for maximum signal reception based on elevation angle.
Sengupta, Louise C.; Zhang, Xubai; Chiu, Luna H., Electronically tunable, low-loss ceramic materials including a tunable dielectric phase and multiple metal oxide phases.
Brand Michael ; Dougherty Thomas Kirk ; Drab John J. ; Pierce Brian M., Fixed frequency regulation circuit employing a voltage variable dielectric capacitor.
Suzuki Katsumi,JPX ; Enomoto Youichi,JPX ; Tanaka Shoji,JPX, High frequency band high temperature superconductor mixer antenna which allows a superconductor feed line to be used in.
Nielsen, Christian S.; Miltich, Thomas P.; Breyen, Mark D.; Young, Paul B., Implantable medical device having flat electrolytic capacitor fabricated with laser welded anode sheets.
King Jeffrey V. ; Fletcher William I. ; Lemon Leon M. ; Olsen David D., Intelligent fiberoptic transmitters and methods of operating and manufacturing the same.
Cygan Lawrence F. (Schaumburg IL) Gailus Paul H. (Prospect Heights IL) Turney William J. (Schaumburg IL) Yester ; Jr. Francis R. (Arlington Heights IL), Method and apparatus for enhancing an operating characteristic of a radio transmitter.
Manssen, Keith; Greene, Matthew; Smith, Wayne; Schlueter, David; Spears, John, Method and apparatus for managing interference in a communication device.
Hess Garry C. (38W711 Hogan Hill Elgin IL 60123) Davidson Allen L. (3502 Crystal Lake Ave. Crystal Lake IL 60014), Method and apparatus for producing diversity gain of a received signal.
Doyle, James T.; Maksimovic, Dragan; Li, Yushan, Method and system for providing power management in a radio frequency power amplifier using adaptive envelope tracking.
Jaing Cheng-Chung,TWX ; Chen Jyh-Shin,TWX ; Chyi Jen-Inn,TWX ; Sheu Jeng-Jiing,TWX, Method for fabricating capacitor containing amorphous and polycrystalline ferroelectric films and method for forming amorphous ferroelectric film.
Willis, Frederick G.; Radtke, Richard R.; Ellison, Joseph; Fozo, Steven R.; Kern, Glenn A., Method for generating a table of engine calibration control values.
Tangemann Michael,DEX ; Hoek Cornelis,DEX, Method of determining the direction of arrival of a radio signal, as well as radio base station and radiocommunications system.
Manssen, Keith; Hoirup, Carsten; Greene, Matthew; Hughes, Simon Andrew; Morelen, Steven Mark; Galperin, Victor; Spears, John, Methods and apparatus for tuning circuit components of a communication device.
Babbitt Richard W. (Fairhaven NJ) Koscica Thomas E. (Clark NJ) Drach William C. (Trenton NJ), Microwave ferroelectric phase shifters and methods for fabricating the same.
Duncombe Peter Richard ; Laibowitz Robert Benjamin ; Neumayer Deborah Ann ; Saenger Katherine Lynn ; Shaw Thomas Mcarraoll, Multilayer ferroelectric capacitor structure.
Chang Kai (College Station TX) Navarro Julio A. (Pasadena TX) Shu Yong H. (Bryan TX), Planar active endfire radiating elements and coplanar waveguide filters with wide electronic tuning bandwidth.
Kuo Yao Hsien ; Kennedy John Francis ; Cvetkovic Milan,GBX ; Nicholas Christopher Stanley,GBX, Proportional diversity radio receiver system with dynamic noise-controlled antenna phasers.
Carney Scott N. (Palatine IL) Lauro George L. (San Jose CA) Krenz Eric L. (Crystal Lake IL) Ghaem Sanjar (Palatine IL), RF tagging system including RF tags with variable frequency resonant circuits.
Koscica Thomas E. (Clark NJ) Babbitt Richard W. (Fairhaven NJ) Drach William C. (Tinton Falls NJ), Single substrate planar digital ferroelectric phase shifter.
Partridge, Alden; Acsadi, Peter; Omictin, Guy; Robinson, John; Henderson, Herbert Jefferson, Switched charge voltage driver and method for applying voltage to tunable dielectric devices.
Koscica Thomas E. (Clark NJ) Babbitt Richard W. (Fair Haven NJ) Drach William C. (Tinton Falls NJ), System and method for calibrating a ferroelectric phase shifter.
Fabrega Sanchez,Jorge; Poilasne,Gregory; Toncich,Stanley S.; Tran,Allen, System and method for impedance matching an antenna to sub-bands in a communication band.
Channabasappa,Eswarappa; Egri,Robert, System and method of using absorber-walls for mutual coupling reduction between microstrip antennas or brick wall antennas.
Vakilian, Nooshin D.; Rozenblit, Dmitriy; Domino, William J.; Damgaard, Morten, System for allowing a TDMA/CDMA portable transceiver to operate with closed loop power control.
Kelton,James Robert; Cave,Michael David; Girardeau, Jr.,James Ward; May,Michael R.; Astrachan,Paul Morris; Pilla,Anselmo; Doyle,James; Saleem,Shawn; Rybicki,Mathew A., System for providing data to multiple devices and method thereof.
Dimos Duane Brian ; Schwartz Robert William ; Raymond Mark Victor ; Al-Shareef Husam Niman ; Mueller Carl ; Galt David, Tuneable dielectric films having low electrical losses.
Yandrofski Robert M. ; Price John Charles ; Barnes Frank ; Hermann Allen M. ; Scott James Floyd, Tuneable microwave devices including fringe effect capacitor incorporating ferroelectric films.
Yandrofski Robert M. (7 Dutch Creek Dr. Littleton CO 80123) Price John C. (742 16th St. Boulder CO 80302) Barnes Frank (225 Continental View Dr. Boulder CO 80303) Hermann Allen M. (2704 Lookout View , Tuneable microwave devices incorporating high temperature superconducting and ferroelectric films.
Luna H. Chiu ; Yongfei Zhu ; Xubai Zhang ; Steven C. Stowell ; Andrey Kozyrev RU; Somnath Sengupta ; Louise Sengupta, Voltage tunable laminated dielectric materials for microwave applications.
Chiu, Luna H.; Zhu, Yongfei; Zhang, Xubai; Stowell, Steven C.; Kozyrev, Andrey; Sengupta, Somnath; Sengupta, Louise, Voltage tunable varactors and tunable devices including such varactors.
Munson Robert Eugene ; Bancroft Randy Cecil ; Bateman Blaine Rexel ; Negler Joseph Theofil ; Uspenski Alexis ; Ward Edward Earl, Wide band antenna having unitary radiator/ground plane.
Manssen, Keith; Greene, Matthew Russell; Smith, Wayne; Schlueter, David; Spears, John, Method and apparatus for managing interference in a communication device.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.