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GB1296338A - - Google Patents

Info

Publication number
GB1296338A
GB1296338A GB3663171A GB1296338DA GB1296338A GB 1296338 A GB1296338 A GB 1296338A GB 3663171 A GB3663171 A GB 3663171A GB 1296338D A GB1296338D A GB 1296338DA GB 1296338 A GB1296338 A GB 1296338A
Authority
GB
United Kingdom
Prior art keywords
diode
waveguide
dielectric
post
tuning
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
GB3663171A
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 filed Critical
Publication of GB1296338A publication Critical patent/GB1296338A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/12—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices
    • H03B9/14—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices and elements comprising distributed inductance and capacitance
    • H03B9/141—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices and elements comprising distributed inductance and capacitance and comprising a voltage sensitive element, e.g. varactor

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1296338 Cavity resonators STANDARD TELEPHONES & CABLES Ltd 4 Aug 1971 36631/71 Heading H1W [Also in Division H3] A Gunn oscillator tuned by a varactor diode 9 has a resonant length of rectangular waveguide 1 short circuit at one end 2 and a coupling iris 3 at the other end, a Gunn diode 6 and a varactor diode 9 are mounted on each side of the broad dimension centre line of the waveguide and a coupling post 11 projects into the waveguide from a broad side of the waveguide and is positioned between the Gunn diode 6 and the varactor diode 9. The tuning post 11 increases the mutual coupling between the diodes 6 and 9 so as to produce wider ranges of electronic tuning. The negative frequency/temperature characteristic of the diode module 6, 9 is compensated by a dielectric sleeve 12 on the coupling post 11, the dielectric material of the sleeve 12 having a dielectric contact with a negative temperature coefficient. The dielectric material may be titania in polystyrene. Mechanical tuning may be provided by a dielectric tuning post 10 and the bias to the Gunn diode 6 may be from 7 via a LPF 8.
GB3663171A 1971-08-04 1971-08-04 Expired GB1296338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3663171 1971-08-04

Publications (1)

Publication Number Publication Date
GB1296338A true GB1296338A (en) 1972-11-15

Family

ID=10389857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3663171A Expired GB1296338A (en) 1971-08-04 1971-08-04

Country Status (3)

Country Link
FR (1) FR2148227B3 (en)
GB (1) GB1296338A (en)
ZA (1) ZA723985B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2221856A1 (en) * 1973-01-29 1974-10-11 Labo Electronique Physique Varactor tuned RF power oscillator - has varactor controlled with suitable square wave voltage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2221856A1 (en) * 1973-01-29 1974-10-11 Labo Electronique Physique Varactor tuned RF power oscillator - has varactor controlled with suitable square wave voltage

Also Published As

Publication number Publication date
ZA723985B (en) 1973-03-28
FR2148227B3 (en) 1975-10-03
FR2148227A1 (en) 1973-03-11

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee