ZA864700B - A wide-band radio transmitter - Google Patents

A wide-band radio transmitter

Info

Publication number
ZA864700B
ZA864700B ZA864700A ZA864700A ZA864700B ZA 864700 B ZA864700 B ZA 864700B ZA 864700 A ZA864700 A ZA 864700A ZA 864700 A ZA864700 A ZA 864700A ZA 864700 B ZA864700 B ZA 864700B
Authority
ZA
South Africa
Prior art keywords
sub
transmitter
filters
filter
frequency
Prior art date
Application number
ZA864700A
Other languages
English (en)
Inventor
Helmut Funfgelder
Johann-Gerhard Zirwas
Dieter Ochsmann
Original Assignee
Siemens Ag
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 by Siemens Ag filed Critical Siemens Ag
Publication of ZA864700B publication Critical patent/ZA864700B/xx

Links

Classifications

    • 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
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Conductive Materials (AREA)
  • Glass Compositions (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
ZA864700A 1985-06-25 1986-06-24 A wide-band radio transmitter ZA864700B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3522712 1985-06-25

Publications (1)

Publication Number Publication Date
ZA864700B true ZA864700B (en) 1987-02-25

Family

ID=6274148

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA864700A ZA864700B (en) 1985-06-25 1986-06-24 A wide-band radio transmitter

Country Status (7)

Country Link
US (1) US4723306A (zh)
EP (1) EP0208182B1 (zh)
AT (1) ATE47943T1 (zh)
DE (1) DE3666908D1 (zh)
IN (1) IN165870B (zh)
NO (1) NO168980C (zh)
ZA (1) ZA864700B (zh)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5129100A (en) * 1989-09-05 1992-07-07 General Instrument Corp. Agile output band pass filter for agile up converter
FR2666417B1 (fr) * 1990-08-31 1993-03-26 Tekelec Airtronic Sa Procede pour controler le fonctionnement d'un systeme comprenant un arrangement de filtre et un dispositif utilisateur tel qu'une antenne relie a ce dernier, et agencement pour la mise en óoeuvre de ce procede.
GB2251147B (en) * 1990-10-01 1994-10-26 Motorola Inc Filter switching circuit
JP3086512B2 (ja) * 1990-11-14 2000-09-11 エリクソン−ジーイー モービル コミュニケーションズ ホールディング インコーポレイテッド 送信機及びその電力増幅回路
DE4116126A1 (de) * 1991-05-17 1992-11-19 Telefunken Systemtechnik Sendeeinrichtung fuer den frequenz-hopping-betrieb
FI91819C (fi) * 1991-11-05 1994-08-10 Nokia Mobile Phones Ltd Menetelmä kahden eri taajuusalueella toimivan digitaalisen radiopuhelimen taajuuksien muodostamiseksi
AU660063B2 (en) * 1992-02-18 1995-06-08 Alcatel N.V. A system and method for combining multiple transmitters in a multi-channel cellular telephone communication system
US5369373A (en) * 1992-10-16 1994-11-29 Unisys Corporation Comb data generation
JPH0722971A (ja) * 1993-07-06 1995-01-24 Mitsubishi Electric Corp 無線通信機
US6393264B1 (en) * 1995-09-15 2002-05-21 Siemens Aktiengesellschaft Radio terminal apparatus
CN1081850C (zh) * 1995-09-29 2002-03-27 松下电器产业株式会社 功率放大器和通信单元
US5794131A (en) * 1996-03-19 1998-08-11 Ericsson Inc. Reducing or eliminating radio transmitter mixer spurious outputs
US5793309A (en) * 1996-08-14 1998-08-11 Lockheed Martin Corporation Short range electromagnetic proximity detection
US6078794A (en) 1997-02-19 2000-06-20 Motorola, Inc. Impedance matching for a dual band power amplifier
SE508506C2 (sv) * 1997-02-25 1998-10-12 Ericsson Telefon Ab L M Anordning och förfarande vid telekommunikation
DE19823060C2 (de) 1998-05-22 2001-02-22 Ericsson Telefon Ab L M Leistungsverstärker-Ausgangsschaltung
US7209726B2 (en) * 2001-04-27 2007-04-24 Pxp B.V. Switch in UHF bandpass
US7095454B2 (en) * 2003-07-30 2006-08-22 Maxim Integrated Products, Inc. Broadband single conversion tuner integrated circuits
US7347134B2 (en) * 2004-09-29 2008-03-25 Kimberly-Clark Worldwide, Inc. No touch dispenser for sheet material with automatic advance
US10167178B2 (en) 2015-03-27 2019-01-01 Lippert Components, Inc. Leveling jack with direct actuation
US20160304066A1 (en) * 2015-03-27 2016-10-20 Lippert Components, Inc. Leveling jack with direct actuation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1110784A (en) * 1964-06-13 1968-04-24 Emi Ltd Improvements relating to wide band radio transmitters
US4165493A (en) * 1978-04-17 1979-08-21 Rockwell International Corporation Protected amplifier apparatus
US4234965A (en) * 1978-06-28 1980-11-18 Motorola, Inc. Communication tuning system utilizing local oscillator frequency selection for maximum RF filter bandwidth and method thereof
DE3127566C2 (de) * 1981-07-11 1984-03-08 Rohde & Schwarz GmbH & Co KG, 8000 München Antennenanpasseinrichtung für einen nach dem Frequenzsprung-Verfahren arbeitenden Hochfrequenzsender
DE3203961A1 (de) * 1982-02-05 1983-08-18 Siemens AG, 1000 Berlin und 8000 München Elektronischer sende-empfangsumschalter
US4486722A (en) * 1982-02-18 1984-12-04 Rockwell International Corporation Pin diode switched impedance matching network having diode driver circuits transparent to RF potential
DE3310389A1 (de) * 1983-03-22 1984-10-11 Siemens AG, 1000 Berlin und 8000 München Breitbandiger sender fuer kurze elektromagnetische wellen

Also Published As

Publication number Publication date
DE3666908D1 (en) 1989-12-14
NO862515D0 (no) 1986-06-23
NO862515L (no) 1986-12-29
ATE47943T1 (de) 1989-11-15
NO168980B (no) 1992-01-13
EP0208182A1 (de) 1987-01-14
US4723306A (en) 1988-02-02
IN165870B (zh) 1990-02-03
EP0208182B1 (de) 1989-11-08
NO168980C (no) 1992-04-22

Similar Documents

Publication Publication Date Title
ZA864700B (en) A wide-band radio transmitter
ATE69128T1 (de) Funkempfaenger.
ATE223629T1 (de) Multimoden-funkendgerät
GB2126033B (en) High frequency signal switching device
FI843679L (fi) Avstaemningsenhet foer apparater foer underraettelsekommunikationsteknik.
JPS5418201A (en) Automatic band switching device for multi-band radio receiver
JPS5753118A (en) Selecting circuit for pass band
JPS52109966A (en) Receiving beam former
JPS5620347A (en) Fm stereophonic tuner circuit
JPS5724111A (en) Signal synthesizer
JPS52140219A (en) Tuner unit
JPS57157650A (en) Receiver
JPS6450716A (en) Harmonic suppressor
JPS5333514A (en) Radio receiver
JPS5413714A (en) Multi-frequency signal reception system
JPS551797A (en) Circuit for generating and stably amplifying wide band radio frequency signal
JPS5592045A (en) Antenna switching circuit of car radio and so on
JPS5475919A (en) Receiver
JPS56164685A (en) Audio signal recording circuit
SE8001394L (sv) Radiomottagare med elektronisk avstemning
JPS5538731A (en) Muting control signal generation circuit
JPS52132619A (en) Signal meter driving circuit for am radio receiver
JPS5258305A (en) Tuner
JPS5792912A (en) Acoustic apparatus
JPS57113404A (en) Signal secrecy maintaining device