$\require{mediawiki-texvc}$

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

Wide-range power control systems and methods for radio frequency transmitters and mobile radiotelephones 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-001/04
출원번호 US-0048431 (1998-03-26)
발명자 / 주소
  • Wynn Stephen Robert
출원인 / 주소
  • Ericsson Inc.
대리인 / 주소
    Myers Bigel Sibley & Sajovec
인용정보 피인용 횟수 : 42  인용 특허 : 21

초록 ▼

Radio frequency transmitters and transmitting methods control amplification of a radio frequency power amplifier, attenuation of a voltage standing wave ratio (VSWR) attenuator, and attenuation of a power control attenuator, in response to power control signals. Wide ranges of power control, for exa

대표청구항 ▼

[ What is claimed is:] [1.]1. A radio frequency transmitter comprising:a modulator that modulates an input signal;a radio frequency power amplifier that is coupled to the modulator to amplify the modulated input signal by a predetermined amount in response to a first power control signal;an antenna;

이 특허에 인용된 특허 (21)

  1. Tamesue Kazuhiko (Fukuoka JPX) Nagano Koichi (Fukuoka JPX) Nakamura Masuo (Kyoto JPX), Automatic gain control device for producing constant amplitude output signal.
    상세보기
  2. Mitra Debasis (Summit NJ), Cellular mobile radio system power control.
    상세보기
  3. Heinonen Jarmo (Salo FIX) Hulkko Jaakko (Oulu FIX) Vilmi Toivo (Haukipudas FIX), Dual mode transmission system with switched linear amplifier.
    상세보기
  4. Borg Lars Uno (Stockholm SEX) Lindroth Lars Magnus (Taby SEX), Dynamic control of transmitting power at a transmitter and attenuation at a receiver.
    상세보기
  5. Wu Howard X., High-efficient configurable power amplifier for use in a portable unit.
    상세보기
  6. Malkemes Robert C. ; Ziegler Robert A., Hybrid analog/digital method and apparatus for controlling the transmission power level of a radio transceiver.
    상세보기
  7. Wilson Nathaniel B. (San Diego CA), Linearized digital automatic gain control.
    상세보기
  8. Anderson Mark B. ; Wiseman Brian D., Method and apparatus for controlling gain of a power amplifier.
    상세보기
  9. Hutchison ; IV James A. ; Wheatley ; III Charles E. ; Wieck Chris P., Method and apparatus for increasing receiver immunity to interference.
    상세보기
  10. Fukawa Yasurou (Hiratuka JPX), Mobile radio telecommunications system.
    상세보기
  11. Sasaki, Susumu, Multistage linear amplifier for a wide range of input signal levels.
    상세보기
  12. Nakanishi Eiichi,JPX ; Onodera Tetsuo,JPX, Output power control device.
    상세보기
  13. Wang Hefeng (Tokyo JPX) Onodera Tetsuo (Tokyo JPX), Power control circuit for use with transmitter.
    상세보기
  14. Walton ; Jr. Jay R. (Westford MA) Ketchum John W. (Watertown MA), Power control in a CDMA network.
    상세보기
  15. Siwiak Kazimierz (Coral Springs FL) Minasi David H. (Plantation FL), Radio frequency power amplifier having variable output power.
    상세보기
  16. Suganuma Gen (Mitaka JPX) Kumagai Yukihiko (Mitaka JPX) Higaki Kenji (Mitaka JPX), Receiver with an AGC circuit capable of expanding a dynamic range.
    상세보기
  17. Aihara Yukichi (Kawasaki JPX), Transmission output control circuit.
    상세보기
  18. Dohi Tomohiro (Yokohama JPX) Sawahashi Mamoru (Yokosuka JPX) Ohno Koji (Yokohama JPX), Transmission power control method and apparatus for mobile communications using a CDMA (code division multiple access) s.
    상세보기
  19. Nakamura Hideki (Ohtawara JPX), Transmission power control system in a radio apparatus.
    상세보기
  20. Aihara Yuukichi,JPX, Transmitter power varying device having a bypass line for a power amplifier.
    상세보기
  21. Wynn Stephen R., VSWR control technique for terminal products with linear modulation.
    상세보기

이 특허를 인용한 특허 (42)

  1. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Advanced 3D inductor structures with confined magnetic field.
    상세보기
  2. Abrams,Ted A.; Lander,Victor A.; Taub,Dov C., Apparatus and method to monitor and control power.
    상세보기
  3. Boegl,Thomas; Ritschel,Reinhard; Valten,Thomas, Arrangement for controlling the output power of an HF transmitter.
    상세보기
  4. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Calibration for a tunable RF filter structure.
    상세보기
  5. Leipold, Dirk Robert Walter; Maxim, George; Scott, Baker; Khlat, Nadim; Rao, Jayanti Jaganatha, Cooperative tunable RF filters.
    상세보기
  6. Maxim, George; Scott, Baker; Leipold, Dirk Robert Walter, Filtering characteristic adjustments of weakly coupled tunable RF filters.
    상세보기
  7. Maxim, George; Scott, Baker; Leipold, Dirk Robert Walter, Filtering characteristic adjustments of weakly coupled tunable RF filters.
    상세보기
  8. Lee, Jae-hoon; Park, Chan-ho; Lee, Nam-young, High-electron-mobility transistor.
    상세보기
  9. Lee, Jae-hoon; Park, Chan-ho; Lee, Nam-young, High-electron-mobility transistor.
    상세보기
  10. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Interference rejection RF filters.
    상세보기
  11. Capofreddi,Peter; Shaeffer,Derek K.; Titizer,Korhan, Low phase shift implementation of the baseband circuitry of a Cartesian feedback loop.
    상세보기
  12. Fry,Terry L., Method and apparatus for automatically identifying an antenna connected to a radio transmitter and for automatically controlling a transmitter.
    상세보기
  13. Feher, Kamilo, Methods and systems for transmission of multiple modulated signals over wireless networks.
    상세보기
  14. Feher,Kamilo, Modulation and demodulation format selectable system.
    상세보기
  15. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band impedance tuners using weakly-coupled LC resonators.
    상세보기
  16. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band impedance tuners using weakly-coupled LC resonators.
    상세보기
  17. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band impedance tuners using weakly-coupled LC resonators.
    상세보기
  18. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band impedance tuners using weakly-coupled LC resonators.
    상세보기
  19. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band interference optimization.
    상세보기
  20. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band interference optimization.
    상세보기
  21. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Multi-band interference optimization.
    상세보기
  22. Feher,Kamilo, OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation.
    상세보기
  23. Leipold, Dirk Robert Walter; Maxim, George; Scott, Baker, Passive acoustic resonator based RF receiver.
    상세보기
  24. Maxim, George; Leipold, Dirk Robert Walter; Granger-Jones, Marcus; Scott, Baker, Passive voltage-gain network.
    상세보기
  25. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, RF filter structure for antenna diversity and beam forming.
    상세보기
  26. Scott, Baker; Maxim, George; Leipold, Dirk Robert Walter; Granger-Jones, Marcus, RX shunt switching element-based RF front-end circuit.
    상세보기
  27. Leipold, Dirk Robert Walter; Granger-Jones, Marcus; Maxim, George; Scott, Baker; Khlat, Nadim, Reconfigurable RF filter.
    상세보기
  28. Kuan-Liang Tsao TW, Signal transmission circuit of a wireless telephone handset.
    상세보기
  29. Feher,Kamilo, Spread spectrum, cross-correlated and filtered modulated systems.
    상세보기
  30. Loh, Lup Meng, System and method for transmitter leak-over cancellation with closed loop optimization.
    상세보기
  31. Boos, Zdravko, Transmitter and method of transmitting a signal.
    상세보기
  32. Shibamura, Yousuke, Transmitting circuit in which damage to power amplifier due to reflected wave is prevented and transmitter-receiver provided with the transmitting circuit.
    상세보기
  33. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Tunable RF filter based RF communications system.
    상세보기
  34. Leipold, Dirk Robert Walter; Maxim, George; Scott, Baker, Tunable RF filter paths for tunable RF filter structures.
    상세보기
  35. Leipold, Dirk Robert Walter; Maxim, George; Scott, Baker, Tunable RF filter structure formed by a matrix of weakly coupled resonators.
    상세보기
  36. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, VSWR detector for a tunable filter structure.
    상세보기
  37. Maxim, George; Scott, Baker; Leipold, Dirk Robert Walter, Weakly coupled RF network based power amplifier architecture.
    상세보기
  38. Leipold, Dirk Robert Walter; Maxim, George; Scott, Baker; Chang, Danny W., Weakly coupled based harmonic rejection filter for feedback linearization power amplifier.
    상세보기
  39. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Weakly coupled tunable RF receiver architecture.
    상세보기
  40. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Weakly coupled tunable RF receiver architecture.
    상세보기
  41. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Weakly coupled tunable RF receiver architecture.
    상세보기
  42. Maxim, George; Leipold, Dirk Robert Walter; Scott, Baker, Weakly coupled tunable RF transmitter architecture.
    상세보기

관련 콘텐츠

섹션별 컨텐츠 바로가기

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

AI-Helper 아이콘
AI-Helper
안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

선택된 텍스트

맨위로