GB1197073A - A U.H.F. Tuner - Google Patents

A U.H.F. Tuner

Info

Publication number
GB1197073A
GB1197073A GB34035/67A GB3403567A GB1197073A GB 1197073 A GB1197073 A GB 1197073A GB 34035/67 A GB34035/67 A GB 34035/67A GB 3403567 A GB3403567 A GB 3403567A GB 1197073 A GB1197073 A GB 1197073A
Authority
GB
United Kingdom
Prior art keywords
circuit
tuned
transistor
base
circuits
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.)
Expired
Application number
GB34035/67A
Inventor
Heinz Erler
Bernhard Reher
Hartwig Hopp
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.)
FERNSEHGERATEWERK STASSFURT VE
Original Assignee
FERNSEHGERATEWERK STASSFURT VE
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 FERNSEHGERATEWERK STASSFURT VE filed Critical FERNSEHGERATEWERK STASSFURT VE
Priority to GB34035/67A priority Critical patent/GB1197073A/en
Publication of GB1197073A publication Critical patent/GB1197073A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

1,197,073. Circuit assemblies. FERNSEHGERATEWERK STASSFURT, VEB. 25 July, 1967, No. 34035/67. Heading H1R. [Also in Division H3] In a U.H.F. tuner unit comprising a first transistor amplifier and a second transistor self-oscillating mixer the transistors together with the associated circuit components are mounted on an insulating board provided on each surface with a conducting coating and the tuned circuits are formed from strips produced in the coating. An electrically insulating board is provided on each face with an electrically conductive coating on which board is mounted the various components of the tuner in recesses and which coatings serve to form the tuned circuits and interconnecting circuits. The quarter wavelength tuned circuit of the first amplifier 2 comprises a strip conductor 4 in the top conducting coating 12 tuned by a variable capacity diode 7 and this tuned circuit is coupled via impedance 6 with a strip conductor 5 tuned by variable capacity diode 8 which timed circuit is coupled to the input of a selfoscillating mixer transistor 3. The reactance of the conducting layer 12 on the base-plate may be varied by connecting pieces 19, 20 which pass through slots in the base, Figs. 4, 5 (not shown). The oscillator circuit of the transistor 3 comprises a further strip conductor formed in the conductive coating 12 tuned by a variable capacity diode 23 the circuit being coupled to the transistor 3 via capacitor 26. The I.F. circuit of the mixer comprises inductors 27, 28 and capacitors 29, 30 connected on the underside of the base Fig. 3. The setting of the tuning range and frequency is by means of metal strips 31 and connecting pieces 34 in slots in the base. The circuits on the two surfaces of the boards are connected by straps at the edges of the board.
GB34035/67A 1967-07-25 1967-07-25 A U.H.F. Tuner Expired GB1197073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34035/67A GB1197073A (en) 1967-07-25 1967-07-25 A U.H.F. Tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34035/67A GB1197073A (en) 1967-07-25 1967-07-25 A U.H.F. Tuner

Publications (1)

Publication Number Publication Date
GB1197073A true GB1197073A (en) 1970-07-01

Family

ID=10360553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34035/67A Expired GB1197073A (en) 1967-07-25 1967-07-25 A U.H.F. Tuner

Country Status (1)

Country Link
GB (1) GB1197073A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818349A (en) * 1973-10-01 1974-06-18 Zenith Radio Corp Thick film vhf tuner wherein uhf subchassis is used as external ground element for vhf tuner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818349A (en) * 1973-10-01 1974-06-18 Zenith Radio Corp Thick film vhf tuner wherein uhf subchassis is used as external ground element for vhf tuner

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees