NL175867B - RECEPTION DEVICE FOR ULTRA-SHORT-RADIO RADIO SIGNALS, ESPECIALLY A MAIN DEVICE OF A COMMON AERIAL INSTALLATION. - Google Patents

RECEPTION DEVICE FOR ULTRA-SHORT-RADIO RADIO SIGNALS, ESPECIALLY A MAIN DEVICE OF A COMMON AERIAL INSTALLATION.

Info

Publication number
NL175867B
NL175867B NL7208423A NL7208423A NL175867B NL 175867 B NL175867 B NL 175867B NL 7208423 A NL7208423 A NL 7208423A NL 7208423 A NL7208423 A NL 7208423A NL 175867 B NL175867 B NL 175867B
Authority
NL
Netherlands
Prior art keywords
radio
ultra
short
aerial installation
reception device
Prior art date
Application number
NL7208423A
Other languages
Dutch (nl)
Other versions
NL7208423A (en
NL175867C (en
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
Priority claimed from DE19712140680 external-priority patent/DE2140680C3/en
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of NL7208423A publication Critical patent/NL7208423A/xx
Publication of NL175867B publication Critical patent/NL175867B/en
Application granted granted Critical
Publication of NL175867C publication Critical patent/NL175867C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Transmitters (AREA)
NL7208423A 1971-08-13 1972-06-20 RECEPTION DEVICE FOR ULTRA-SHORT-RADIO RADIO SIGNALS, ESPECIALLY A MAIN DEVICE OF A COMMON AERIAL INSTALLATION. NL175867C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712140680 DE2140680C3 (en) 1971-08-13 Receiving station for VHF audio broadcast signals
DE19792902650 DE2902650A1 (en) 1971-08-13 1979-01-24 RECEIVING CENTER FOR VHF SOUND BROADCAST SIGNALS

Publications (3)

Publication Number Publication Date
NL7208423A NL7208423A (en) 1973-02-15
NL175867B true NL175867B (en) 1984-08-01
NL175867C NL175867C (en) 1985-01-02

Family

ID=25761597

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7208423A NL175867C (en) 1971-08-13 1972-06-20 RECEPTION DEVICE FOR ULTRA-SHORT-RADIO RADIO SIGNALS, ESPECIALLY A MAIN DEVICE OF A COMMON AERIAL INSTALLATION.
NL8000468A NL8000468A (en) 1971-08-13 1980-01-24 RADIO RECEIVER FOR ULTRA SHORT WAVE SIGNALS.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL8000468A NL8000468A (en) 1971-08-13 1980-01-24 RADIO RECEIVER FOR ULTRA SHORT WAVE SIGNALS.

Country Status (4)

Country Link
CH (1) CH538784A (en)
DE (1) DE2902650A1 (en)
GB (1) GB1324679A (en)
NL (2) NL175867C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6115363A (en) * 1997-02-19 2000-09-05 Nortel Networks Corporation Transceiver bandwidth extension using double mixing
EP1710907A1 (en) * 2005-04-05 2006-10-11 Siemens Schweiz AG System for power optimized audio signals reproduction

Also Published As

Publication number Publication date
DE2140680A1 (en) 1973-02-22
DE2902650A1 (en) 1980-07-31
NL7208423A (en) 1973-02-15
DE2140680B2 (en) 1976-04-08
GB1324679A (en) 1973-07-25
NL175867C (en) 1985-01-02
NL8000468A (en) 1980-07-28
CH538784A (en) 1973-08-15

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Legal Events

Date Code Title Description
BC A request for examination has been filed
V1 Lapsed because of non-payment of the annual fee