FR2396471A1 - TV UHF tuner RF and mixer stage - has common base connected transistor with two strip conductors and capacitor forming series circuit resonant at mid UHF band frequencies - Google Patents

TV UHF tuner RF and mixer stage - has common base connected transistor with two strip conductors and capacitor forming series circuit resonant at mid UHF band frequencies

Info

Publication number
FR2396471A1
FR2396471A1 FR7819656A FR7819656A FR2396471A1 FR 2396471 A1 FR2396471 A1 FR 2396471A1 FR 7819656 A FR7819656 A FR 7819656A FR 7819656 A FR7819656 A FR 7819656A FR 2396471 A1 FR2396471 A1 FR 2396471A1
Authority
FR
France
Prior art keywords
uhf
mid
common base
series circuit
base connected
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.)
Granted
Application number
FR7819656A
Other languages
French (fr)
Other versions
FR2396471B1 (en
Inventor
Gerhard Maier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SABA GmbH
Original Assignee
SABA GmbH
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 SABA GmbH filed Critical SABA GmbH
Publication of FR2396471A1 publication Critical patent/FR2396471A1/en
Application granted granted Critical
Publication of FR2396471B1 publication Critical patent/FR2396471B1/fr
Granted legal-status Critical Current

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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06—Transference of modulation using distributed inductance and capacitance
    • H03D9/0658—Transference of modulation using distributed inductance and capacitance by means of semiconductor devices having more than two electrodes
    • H03D9/0666—Transference of modulation using distributed inductance and capacitance by means of semiconductor devices having more than two electrodes using bipolar transistors
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Bipolar Transistors (AREA)

Abstract

The TV UHF tuner self-oscillating mixer transistor (T) in common base configuration has its base (B) connected via a first capacitor (CB) to a source of reference voltage. A bias voltage (Ub) is applied to the base via a first strip conductor (Z1). The emitter (E) of the transistor is connected to one terminal of a source (e) of drive voltage, the other terminal of which is connected via a second strip lead (Z2) and a second capacitor (Ck) to the end of the first strip lead (Z1) remote from the base of the transistor. The dimensions of the leads (Z1, Z2) are such that together with the second capacitor (Ck) they form a series resonance circuit for the middle frequencies of the UHF band. The amplification is therefore linearised and the signal/noise is improved in the band 550-680 MHz.
FR7819656A 1977-06-30 1978-06-30 TV UHF tuner RF and mixer stage - has common base connected transistor with two strip conductors and capacitor forming series circuit resonant at mid UHF band frequencies Granted FR2396471A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2729487A DE2729487C2 (en) 1977-06-30 1977-06-30 Arrangement for tunable high frequency and mixer stages in television receivers

Publications (2)

Publication Number Publication Date
FR2396471A1 true FR2396471A1 (en) 1979-01-26
FR2396471B1 FR2396471B1 (en) 1985-01-25

Family

ID=6012754

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819656A Granted FR2396471A1 (en) 1977-06-30 1978-06-30 TV UHF tuner RF and mixer stage - has common base connected transistor with two strip conductors and capacitor forming series circuit resonant at mid UHF band frequencies

Country Status (5)

Country Link
DE (1) DE2729487C2 (en)
ES (1) ES470843A1 (en)
FR (1) FR2396471A1 (en)
IT (1) IT1202750B (en)
TR (1) TR20160A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321190C2 (en) * 1993-06-25 1995-04-20 Ant Nachrichtentech Push-pull mixer

Also Published As

Publication number Publication date
FR2396471B1 (en) 1985-01-25
IT7824834A0 (en) 1978-06-22
DE2729487B1 (en) 1978-12-21
DE2729487C2 (en) 1979-08-16
ES470843A1 (en) 1979-02-01
IT1202750B (en) 1989-02-09
TR20160A (en) 1980-09-29

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse