GB1345520A - Microwave interferometers - Google Patents

Microwave interferometers

Info

Publication number
GB1345520A
GB1345520A GB1345520DA GB1345520A GB 1345520 A GB1345520 A GB 1345520A GB 1345520D A GB1345520D A GB 1345520DA GB 1345520 A GB1345520 A GB 1345520A
Authority
GB
United Kingdom
Prior art keywords
waveguide
target
april
guides
coupling
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
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Publication of GB1345520A publication Critical patent/GB1345520A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • 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
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1345520 Radar UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 April 1971 [2 April 1970] 15793/70 Heading H4D [Also in Division H1] In a microwave interferometer including a second waveguide means excited from a first waveguide 10, microwaves having two successive frequencies are propagated in the first waveguide, the difference in magnitude of the wave in the second waveguide means at the two frequencies is measured together with the ratio of that difference to one of the magnitudes, and the first waveguide is arranged to propagate waves towards a reflective target 25 the distance of which is to be determined. In one embodiment the second waveguide means comprises waveguides 16, 18 terminated in now-reflecting detectors 20, 22. A mathematical analysis is developed in the specification, distance L being (2n + 1)#/4 (where n is an integer and # is wavelength in the guide); it is assumed that the coupling into guides 16, 18 is low and that reflexion by target 25 is substantially complete. A phase shifter may be incorporated into waveguide 10 when investigating vibrations of a target, Fig. 2b (not shown). Many means for coupling the "side" guides to the main guide are described (see Division H1). Vibration of a target may be measured.
GB1345520D 1971-04-19 1971-04-19 Microwave interferometers Expired GB1345520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1599370 1971-04-19

Publications (1)

Publication Number Publication Date
GB1345520A true GB1345520A (en) 1974-01-30

Family

ID=10069271

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1345520D Expired GB1345520A (en) 1971-04-19 1971-04-19 Microwave interferometers

Country Status (1)

Country Link
GB (1) GB1345520A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060597A2 (en) * 1981-03-09 1982-09-22 CISE- Centro Informazioni Studi Esperienze S.p.A. Microwave sensor for checking the level of the molten metal in continuous casting processes
GB2123237A (en) * 1982-06-28 1984-01-25 Davy Mckee Surface detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060597A2 (en) * 1981-03-09 1982-09-22 CISE- Centro Informazioni Studi Esperienze S.p.A. Microwave sensor for checking the level of the molten metal in continuous casting processes
EP0060597A3 (en) * 1981-03-09 1984-04-18 Cise- Centro Informazioni Studi Esperienze S.P.A. Microwave sensor for checking the level of the molten metal in continuous casting processes
GB2123237A (en) * 1982-06-28 1984-01-25 Davy Mckee Surface detector

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed