JPH0480140U - - Google Patents

Info

Publication number
JPH0480140U
JPH0480140U JP1990122452U JP12245290U JPH0480140U JP H0480140 U JPH0480140 U JP H0480140U JP 1990122452 U JP1990122452 U JP 1990122452U JP 12245290 U JP12245290 U JP 12245290U JP H0480140 U JPH0480140 U JP H0480140U
Authority
JP
Japan
Prior art keywords
control voltage
transmission wave
load
power amplifier
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1990122452U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990122452U priority Critical patent/JPH0480140U/ja
Priority to KR1019910020795A priority patent/KR950007492B1/ko
Priority to US07/796,838 priority patent/US5278996A/en
Publication of JPH0480140U publication Critical patent/JPH0480140U/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

【図面の簡単な説明】
第１図は本考案の携帯用無線機の最終段の一実
施例を示したブロツク図、第２図は第１図に示し
たアイソレータのインピーダンス特性図、第３図
は第１図に示した電力増幅器の負荷に対する電流
等高線図、第４図は第１図に示したシンセＶＣＯ
の特性図、第５図は第１図に示したバリキヤツプ
ダイオードの特性図、第６図は従来の携帯用無線
機の最終段の一例を示したブロツク図である。 １……電力増幅器、２……アイソレータ、３…
…アンテナ、４……コンデンサ、５……バリキヤ
プダイオード、７……変調用ＶＣＯ、８……シン
セＶＣＯ、９……ミキサ、１０，１１……バツフ
アアンプ。

Claims (1)

    【実用新案登録請求の範囲】
  1. 入力される送信波の周波数に応じてそのインピ
    ーダンスが変化する負荷と、送信波を電力増幅し
    て前記負荷に出力する電力増幅器とを有する無線
    機において、前記電力増幅器の負荷側に接続され
    る電圧可変容量ダイオードと、前記送信波の周波
    数に対応した制御電圧を発生する制御電圧発生手
    段と、この制御電圧発生手段により発生された制
    御電圧を前記電圧可変容量ダイオードに印加する
    印加手段とを具備したことを特徴とする携帯用無
    線機。
JP1990122452U 1990-11-26 1990-11-26 Pending JPH0480140U (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1990122452U JPH0480140U (ja) 1990-11-26 1990-11-26
KR1019910020795A KR950007492B1 (ko) 1990-11-26 1991-11-21 소비전류의 안정화 기능을 갖는 휴대용 무선기
US07/796,838 US5278996A (en) 1990-11-26 1991-11-25 Portable transceiver having consumption-current stabilizing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990122452U JPH0480140U (ja) 1990-11-26 1990-11-26

Publications (1)

Publication Number Publication Date
JPH0480140U true JPH0480140U (ja) 1992-07-13

Family

ID=14836199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990122452U Pending JPH0480140U (ja) 1990-11-26 1990-11-26

Country Status (3)

Country Link
US (1) US5278996A (ja)
JP (1) JPH0480140U (ja)
KR (1) KR950007492B1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423082A (en) * 1993-06-24 1995-06-06 Motorola, Inc. Method for a transmitter to compensate for varying loading without an isolator
US5673001A (en) * 1995-06-07 1997-09-30 Motorola, Inc. Method and apparatus for amplifying a signal
US6556814B1 (en) * 1999-07-22 2003-04-29 Motorola, Inc. Memory-based amplifier load adjust system
US6393262B1 (en) * 2000-01-11 2002-05-21 Ericsson Inc. Difference frequency impedance transformation circuits and methods for providing same in power amplifier systems
EP1276243B1 (en) * 2001-07-11 2004-03-31 TTPCOM Limited Transmitter for a mobile telecommunication device
FR2873247B1 (fr) * 2004-07-15 2008-03-07 Nortel Networks Ltd Emetteur radio avec adaptation d'impedance variable
FR2880219B1 (fr) * 2004-12-23 2007-02-23 Thales Sa Procede et systeme de radiocommunication numerique, notamment pour les stations sol mobiles
US7729667B2 (en) * 2006-02-16 2010-06-01 Raytheon Company System and method for intermodulation distortion cancellation
US8914167B2 (en) * 2010-10-13 2014-12-16 General Electric Company Communication system for a rail vehicle and method for communicating with a rail vehicle
US9199653B2 (en) 2010-10-13 2015-12-01 General Electric Company Communication system and method for communicating between vehicles of a vehicle consist

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766330A (en) * 1972-04-28 1973-10-16 Aero Service Corp Disc recording stylus driver
US4370622A (en) * 1981-03-23 1983-01-25 Rockwell International Corporation IMD Limiter
US4612669A (en) * 1985-04-30 1986-09-16 Rca Corporation Antenna matching system
US5095285A (en) * 1990-08-31 1992-03-10 Texas Instruments Incorporated Monolithically realizable harmonic trapping circuit

Also Published As

Publication number Publication date
US5278996A (en) 1994-01-11
KR950007492B1 (ko) 1995-07-11
KR920011094A (ko) 1992-06-27

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