GB1176611A - Temperature-Compensated Oscillator - Google Patents

Temperature-Compensated Oscillator

Info

Publication number
GB1176611A
GB1176611A GB1758368A GB1758368A GB1176611A GB 1176611 A GB1176611 A GB 1176611A GB 1758368 A GB1758368 A GB 1758368A GB 1758368 A GB1758368 A GB 1758368A GB 1176611 A GB1176611 A GB 1176611A
Authority
GB
United Kingdom
Prior art keywords
cavity
oscillator
temperature
varactor
senser
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
GB1758368A
Inventor
Allen John Page
Chok Yit Wong
Peter Frederick Louis Leeks
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB1758368A priority Critical patent/GB1176611A/en
Priority to GB1238956D priority patent/GB1238956A/en
Publication of GB1176611A publication Critical patent/GB1176611A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H03C7/025—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices
    • H03C7/027—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using semiconductor devices using diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/021—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising distributed capacitance and inductance

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transmitters (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1,176,611. Oscillator temperature compensation. MULLARD Ltd. 11 April, 1968, No. 17583/68. Heading H3T. In an oscillator having a resonant cavity 1 means 12 is provided for sensing a temperature associated with the cavity to obtain a control quantity dependent on temperature and means, e.g. a choke 10A allows the control quantity to pass to a varactor 8 while impeding unwanted transmission of the oscillations so that the varactor 8 modifies the reactance of the cavity and its resonant frequency to reduce the temperature sensitivity. The oscillator may include a Gunn effect device 4, the output of which is obtained from an adjustable coupling 6, such as a rotatable loop. The temperature dependent voltage obtained from the senser 12 which may be in thermal contact with the cavity, is fed to control varactor diode 8. The senser 12 may be a transistor clamped to the outside wall of the cavity or in thermal contact with the Gunn effect device 4. Alternatively, the senser 12 may be a thermistor. The required temperature compensation may be set by adjuster 14. The oscillator may be used in receiving echo pulses from nearby magnetron transmitter in radar equipment and the oscillator may be arranged to have the same degree of temperature compensation as that of the magnetron. A non- linear adjuster 15 compensates for the non- linear characteristic of the varactor diode 8. The frequency may be manually adjusted by a frequency setting arrangement 16 and by a coarse mechanical adjustment on the cavity 1. The circuits 14 and 16 may include variable resistances. Varactor diode 8 is supplied with D.C. via an input terminal 9 insulatedly attached to a manually rotatable termination 10. The attachment of the termination 10 to the cavity includes a quarterwave choke rotable joint for preventing passage of the microwave energy. Line conductor 2 is insulatedly attached to the cavity 1 by some means which suppress higher harmonics.
GB1758368A 1968-04-11 1968-04-11 Temperature-Compensated Oscillator Expired GB1176611A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1758368A GB1176611A (en) 1968-04-11 1968-04-11 Temperature-Compensated Oscillator
GB1238956D GB1238956A (en) 1968-04-11 1968-10-14

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1758368A GB1176611A (en) 1968-04-11 1968-04-11 Temperature-Compensated Oscillator
GB4855868 1968-10-14

Publications (1)

Publication Number Publication Date
GB1176611A true GB1176611A (en) 1970-01-07

Family

ID=26252784

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1758368A Expired GB1176611A (en) 1968-04-11 1968-04-11 Temperature-Compensated Oscillator
GB1238956D Expired GB1238956A (en) 1968-04-11 1968-10-14

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1238956D Expired GB1238956A (en) 1968-04-11 1968-10-14

Country Status (1)

Country Link
GB (2) GB1176611A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438937A1 (en) * 1978-10-11 1980-05-09 Thomson Csf Negative resistance oscillator working in ghz range - has dielectric resonator connected to negative resistance element and mounted on dielectric substrate
FR2541536A1 (en) * 1983-02-22 1984-08-24 Thomson Csf Generator of millimetre waves with electronic frequency regulation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831109A (en) * 1973-02-09 1974-08-20 Litton Systems Inc Temperature-compensated voltage-tunable gunn diode oscillator
GB2075782B (en) * 1980-05-09 1983-12-14 Philips Electronic Associated Rf oscillator arrangement
GB2227386A (en) * 1989-01-20 1990-07-25 Philips Electronic Associated Compact tunable waveguide oscillators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438937A1 (en) * 1978-10-11 1980-05-09 Thomson Csf Negative resistance oscillator working in ghz range - has dielectric resonator connected to negative resistance element and mounted on dielectric substrate
FR2541536A1 (en) * 1983-02-22 1984-08-24 Thomson Csf Generator of millimetre waves with electronic frequency regulation

Also Published As

Publication number Publication date
GB1238956A (en) 1971-07-14

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