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Method and apparatus for eliminating intermodulation interference in cellular telephone systems 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-007/00
  • H04J-001/16
출원번호 US-0759782 (1996-12-03)
발명자 / 주소
  • Lee William Chien-Yeh
  • Farrill F. Craig
출원인 / 주소
  • AirTouch Communications, Inc.
대리인 / 주소
    Gates & Cooper
인용정보 피인용 횟수 : 96  인용 특허 : 17

초록 ▼

The invention describes method and apparatus for reducing intermodulation interference caused by reception of undesired signals in wireless receivers. The apparatus comprises an antenna for receiving the desired signal, a low noise amplifier for amplifying this signal, an adjustable attenuator, and

대표청구항 ▼

[ What is claimed is:] [1.] A system for reducing intermodulation interference in a wireless receiver during reception of a first desired signal, comprising:a first source of the first desired signal;a second source of an interfering second signal, the second source located relative to the first sou

이 특허에 인용된 특허 (17)

  1. Overman Thelma L. (Millers MD) Overman Kelly C. (Millers MD), Adaptive radar threat detection and tracker verification system.
    상세보기
  2. Lusignan Bruce (Stanford CA), Cellular data system.
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  3. Frenkiel Richard H. (Englishtown NJ), Cellular radiotelephone system structured for flexible use of different cell sizes.
    상세보기
  4. Williams James W. (Lynchburg VA), Control circuit for a radio repeater.
    상세보기
  5. Simon Rainer (Bellach CHX), Device for increasing the functional area of a system of digitally operating cordless telephones.
    상세보기
  6. Noguchi Yoshifumi (Tokyo JPX) Ono Kouichi (Yokohama JPX) Endoh Hiroyuki (Yokohama JPX), Direct relay equipment.
    상세보기
  7. Kagami Osamu (Kanagawa JPX) Watanabe Kazuji (Kanagawa JPX) Morita Kozo (Kanagawa JPX), Hybrid digital radio-relay system.
    상세보기
  8. Grube Gary W. (Palatine IL), Inter-truncked radio systems bridge protocol.
    상세보기
  9. Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatley ; III Charles E. (Del Mar CA), Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system.
    상세보기
  10. Menich Barry J. (Chicago IL) Atkinson Frederick G. (Winfield IL), Method and apparatus for signal strength measurement and antenna selection in cellular radiotelephone systems.
    상세보기
  11. Schiek Burkhard (Bochum DEX) Uwe Gartner F. (Heidelberg DEX), Method for disturbance reduction in measurement systems for analysis of emission or transmission processes.
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  12. Kawano Minori (Amagasaki JPX) Mihashi Kohji (Amagasaki JPX), Mobile radio communication system with repeater station grid.
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  13. Kinoshita Yasuaki (Hachioji JPX), Portable radio telephone system.
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  14. Campbell Kenneth J. (Solana Beach CA), Radio frequency signals analyzer.
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  15. Halpern Samuel W. (Matawan NJ), Radiotelephone transmission power control.
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  16. McFarlane David A. (Saxmundham GB2) Ball John R. (Woodbridge GB2), Repeater for TDMA mobile radio.
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  17. Saleh Adel A. M. (Holmdel NJ), Techniques for cross-polarization cancellation in a space diversity radio system.
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이 특허를 인용한 특허 (96)

  1. Stefan Scheinert, Arrangements of base transceiver stations of an area-covering network.
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  2. Soong, Anthony C. K.; Weaver, Jr., Lindsay A.; Harms, Brian K.; Funk, Thomas J.; Flowers, Larry D.; Schwartz, Bruce S.; Pressley, Todd A.; Night, Robin, CDMA signal transmission control.
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  3. Shimada,Naoto; Nakamura,Osamu; Uebayashi,Shinji; Utano,Takanori, Communication channel set up method and communication control device for reducing interferences between radio communication systems.
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  4. Waldroup Anthony B. ; Lyall ; Jr. Robert L. ; Bain Richard I., Comprehensive transmitter power control system for radio telephones.
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  5. Abdelmonem, Amr; Galeev, Mikhail; Seskiewicz, Dariusz; Myers, Bill; Myers, Ted, Creating library of interferers.
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  6. Abdelmonem, Amr; Galeev, Mikhail; Seskiewicz, Dariusz; Myers, Bill; Myers, Ted, Creating library of interferers.
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  7. Abdelmonem, Amr; Remillard, Stephen K.; Bundy, Scott C.; Scupin, Jonathan R.; Cromar, Michael W., Dual-duplexed, tower-top front-end for a radio transceiver system.
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  8. Jagger, Charles E.; Willetts, Mark N.; Tobia, Micolino, Interference detection, identification, extraction and reporting.
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