DK34886A - FREQUENCY CONVERTER - Google Patents

FREQUENCY CONVERTER Download PDF

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Publication number
DK34886A
DK34886A DK34886A DK34886A DK34886A DK 34886 A DK34886 A DK 34886A DK 34886 A DK34886 A DK 34886A DK 34886 A DK34886 A DK 34886A DK 34886 A DK34886 A DK 34886A
Authority
DK
Denmark
Prior art keywords
frequency
signal
fhf
outputs
oscillator
Prior art date
Application number
DK34886A
Other languages
Danish (da)
Other versions
DK163087B (en
DK163087C (en
DK34886D0 (en
Inventor
Guenther Zehelein
Juergen Magnus
Original Assignee
Ant Nachrichtentech
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 Ant Nachrichtentech filed Critical Ant Nachrichtentech
Publication of DK34886D0 publication Critical patent/DK34886D0/en
Publication of DK34886A publication Critical patent/DK34886A/en
Publication of DK163087B publication Critical patent/DK163087B/en
Application granted granted Critical
Publication of DK163087C publication Critical patent/DK163087C/en

Links

Classifications

    • 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
    • H03J5/244—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 using electronic means
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
    • H03D2200/0001—Circuit elements of demodulators
    • H03D2200/0017—Intermediate frequency filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1. A frequency converter, comprising a mixer (M) having one input for an oscillator signal (OS), another input for a high frequency signal (HF) and two outputs (1, 2) at which two intermediate frequency partial signals (ZF1, ZF2) that are out of phase with one another and produced by the mixing are present, and comprising a coupler (K) connected to the mixer outputs, which superimposes the two intermediate frequency partial signals at one of its two outputs (3, 4) in phase with one another and is closed off at its other output with an adaptation resistor, wherein the image frequency signals generated in the mixer assume opposite phase positions and compensate for on another, characterized in that the intermediate frequency partial signals, (ZF1, ZF2) are produced by upward mixing, whenever the frequency (fHF ) of the high-frequency signal (HF) is located in a lower range of the frequency band, in which the high-frequency signal can assume any arbitrary frequency ; that the intermediate frequency partial signals (ZF1, ZF2) are produced by downward mixing, whenever the frequency fHF of the high-frequency signal (HF) is located in an upper range of said frequency band, wherein for the upward mixing, the oscillator signal (OS) is tuned to a frequency fOS which is above the frequency fHF of the high-frequency signal, so that in each case the difference between the oscillator frequency fOS and the frequency fHF of the high-frequency signal has a fixedly predetermined value, and for the downward mixing the oscillator signal (OS) is tuned to a frequency fOS such as to be below the frequency fHF of the high-frequency signal, so that the difference between the frequency fHF of the high-frequency signal and the oscillator frequency fOS in each case has the same fixedly predetermined value ; and that connected to the two outputs (3, 4) of the coupler (K) is a switch (S), which switches through whichever one of the coupler outputs (3, 4) at which the intermediate frequency signal (ZF) produced by the in-phase superposition of the intermediate frequency partial signals (ZF1, ZF2) is present, and connects the adaptation resistor to the other coupler output.
DK034886A 1985-01-24 1986-01-23 FREQUENCY TRANSMITTER WITH SCRAPBAND OSCILLATOR DK163087C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3502294 1985-01-24
DE19853502294 DE3502294A1 (en) 1985-01-24 1985-01-24 FREQUENCY CONVERTER

Publications (4)

Publication Number Publication Date
DK34886D0 DK34886D0 (en) 1986-01-23
DK34886A true DK34886A (en) 1986-07-25
DK163087B DK163087B (en) 1992-01-13
DK163087C DK163087C (en) 1992-06-09

Family

ID=6260641

Family Applications (1)

Application Number Title Priority Date Filing Date
DK034886A DK163087C (en) 1985-01-24 1986-01-23 FREQUENCY TRANSMITTER WITH SCRAPBAND OSCILLATOR

Country Status (4)

Country Link
EP (1) EP0188662B1 (en)
AT (1) ATE39597T1 (en)
DE (2) DE3502294A1 (en)
DK (1) DK163087C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07231273A (en) * 1994-02-18 1995-08-29 Sharp Corp Tuner for receiving satellite broadcast
DE19532989C1 (en) * 1995-09-07 1996-11-07 Telefunken Microelectron Multiplicative mixer with three or four-pole compensation stage
DE19624390A1 (en) * 1996-06-19 1998-01-08 Telefunken Microelectron Frequency conversion method for amplitude modulated input signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831097A (en) * 1973-02-23 1974-08-20 Rhg Electronics Labor Inc Image recovery receiver
US4367560A (en) * 1981-03-13 1983-01-04 Rockwell International Corporation Low frequency converter with diode quad mixer
US4457022A (en) * 1982-04-28 1984-06-26 Motorola Inc. Two diode image rejection and pseudo-image enhancement mixer

Also Published As

Publication number Publication date
DK163087B (en) 1992-01-13
EP0188662A3 (en) 1987-11-19
EP0188662A2 (en) 1986-07-30
DE3567134D1 (en) 1989-02-02
EP0188662B1 (en) 1988-12-28
ATE39597T1 (en) 1989-01-15
DK163087C (en) 1992-06-09
DK34886D0 (en) 1986-01-23
DE3502294A1 (en) 1986-07-24

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