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FR2101239B1 - - Google Patents

Info

Publication number
FR2101239B1
FR2101239B1 FR7128395A FR7128395A FR2101239B1 FR 2101239 B1 FR2101239 B1 FR 2101239B1 FR 7128395 A FR7128395 A FR 7128395A FR 7128395 A FR7128395 A FR 7128395A FR 2101239 B1 FR2101239 B1 FR 2101239B1
Authority
FR
France
Prior art keywords
reduce
quartz substrate
thermal coefficient
disc
effective
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
FR7128395A
Other languages
French (fr)
Other versions
FR2101239A1 (en
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of FR2101239A1 publication Critical patent/FR2101239A1/fr
Application granted granted Critical
Publication of FR2101239B1 publication Critical patent/FR2101239B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/08—Strip line resonators
    • H01P7/084—Triplate line resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A metal disc is deposited on a quartz substrate to reduce the effective linear thermal coefficient of expansion of the disc, and air is contained between the quartz substrate and a ground plane to reduce the effective dielectric constant thermal coefficient to make an electromagnetic resonator which is stable in frequency with temperature.
FR7128395A 1970-08-05 1971-08-03 Expired FR2101239B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6122570A 1970-08-05 1970-08-05

Publications (2)

Publication Number Publication Date
FR2101239A1 FR2101239A1 (en) 1972-03-31
FR2101239B1 true FR2101239B1 (en) 1976-12-03

Family

ID=22034442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7128395A Expired FR2101239B1 (en) 1970-08-05 1971-08-03

Country Status (5)

Country Link
US (1) US3633104A (en)
JP (1) JPS5316660B1 (en)
DE (1) DE2135566B2 (en)
FR (1) FR2101239B1 (en)
GB (1) GB1321493A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038500B1 (en) * 1970-11-26 1975-12-10
US4661790A (en) * 1983-12-19 1987-04-28 Motorola, Inc. Radio frequency filter having a temperature compensated ceramic resonator
JPS6152064U (en) * 1984-09-11 1986-04-08
US4646038A (en) * 1986-04-07 1987-02-24 Motorola, Inc. Ceramic resonator filter with electromagnetic shielding
US4667172A (en) * 1986-04-07 1987-05-19 Motorola, Inc. Ceramic transmitter combiner with variable electrical length tuning stub and coupling loop interface
JPH0728168B2 (en) * 1988-08-24 1995-03-29 株式会社村田製作所 Dielectric resonator
JPH0341802A (en) * 1989-07-07 1991-02-22 Ngk Spark Plug Co Ltd Temperature compensation type microwave strip line filter
DE69122748T2 (en) * 1990-12-26 1997-05-07 Tdk Corp HIGH FREQUENCY DEVICE
WO1997045889A2 (en) * 1996-05-31 1997-12-04 Get Technology, Inc. Improved transmission line
FR3119582B1 (en) 2021-02-10 2022-12-23 Psa Automobiles Sa Bodywork element comprising an electrical current dissipation surface.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE67921C (en) * H. EHRHARDT in Düsseldorf Process for punching and simultaneously shaping iron and steel blocks in a heated state
US3034078A (en) * 1959-06-29 1962-05-08 Nat Company Inc Temperature compensated microwave cavity
GB1141410A (en) * 1967-01-25 1969-01-29 Marconi Co Ltd Improvements in or relating to pulsed doppler radar systems
US3544920A (en) * 1967-04-27 1970-12-01 Broadcasting Corp Wide frequency band circulator
US3504303A (en) * 1967-05-04 1970-03-31 Japan Broadcasting Corp Reentrant cavity type circulator

Also Published As

Publication number Publication date
GB1321493A (en) 1973-06-27
DE2135566B2 (en) 1972-11-23
DE2135566A1 (en) 1972-02-10
JPS5316660B1 (en) 1978-06-02
US3633104A (en) 1972-01-04
FR2101239A1 (en) 1972-03-31

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Legal Events

Date Code Title Description
ST Notification of lapse