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GB1444328A - Waveguide device - Google Patents

Waveguide device

Info

Publication number
GB1444328A
GB1444328A GB2384474A GB2384474A GB1444328A GB 1444328 A GB1444328 A GB 1444328A GB 2384474 A GB2384474 A GB 2384474A GB 2384474 A GB2384474 A GB 2384474A GB 1444328 A GB1444328 A GB 1444328A
Authority
GB
United Kingdom
Prior art keywords
impedance matching
waveguide
frequency
dielectric material
section
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
GB2384474A
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.)
Raytheon Co
Original Assignee
Raytheon 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 Raytheon Co filed Critical Raytheon Co
Publication of GB1444328A publication Critical patent/GB1444328A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H01Q3/46—Active lenses or reflecting arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
    • H01Q3/38—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters the phase-shifters being digital

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Waveguide Aerials (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1444328 Aerials RAYTHEON CO 29 May 1974 [11 June 1973] 23844/74 Heading H4A [Also in Division H1] In a phased array antenna system comprising a plurality of antenna elements, apparatus for impedance matching between free space and a ferrite phase shifter disposed within each element and for preventing transmission of modes higher than the dominant mode comprises, a section of waveguide (dimensioned to have a cut-off frequency higher than the highest frequency of the R.F. energy transmitted) and a pair of dielectric media separated by the section of waveguide to act as a pair of inductively coupled resonant circuits the centre frequency of which corresponds to the frequency of the dominant mode and the bandwidth of which corresponds to the band of frequencies to be transmitted, the respective dielectric media providing different propagation time delays. As described, a planar array of phase-changing elements 10, Fig. 1, receives on its rear face radiation from an electromagnetic horn 17. A beam steering computer 15 supplies appropriate control currents to each element, so that the waves from the horn are collimated and are directed as required. Each element 11, Fig. 2, comprises a section of rectangular crosssection waveguide 23 (as shown, the top has been removed) which contains three serially arranged ferrite phase shifters 26a, 26b, 26c and which has impedance matching devices 25, 25<SP>1</SP> at its ends, and driver circuitry 13. The ferrite phase shifters are separated from each other and from the impedance matching element 25 by insulating spacers 30a, 30b, 30c. Control signals from the driver 13 are applied via cables 28a, 28b, 28c. The impedance matching device 25 comprises a circular waveguide structure 27 having disposed therein two spaced apart dielectric material (e.g. bercyllia) slabs 32, 34, which are fastened in place by a suitable epoxy resin. The device 25 is connected to the waveguide 23 by a conductive disc 37, in which is a rectangular slot 41, and which is welded in place. The impedance matching device 25<SP>1</SP> comprises two spaced apart dielectric material slabs 44, 46 between which is an air-filled cavity 48 defined by dielectric material spacers 52, 54.
GB2384474A 1973-06-11 1974-05-29 Waveguide device Expired GB1444328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00369028A US3851281A (en) 1973-06-11 1973-06-11 Impedance matched waveguide device

Publications (1)

Publication Number Publication Date
GB1444328A true GB1444328A (en) 1976-07-28

Family

ID=23453763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2384474A Expired GB1444328A (en) 1973-06-11 1974-05-29 Waveguide device

Country Status (9)

Country Link
US (1) US3851281A (en)
JP (1) JPS5539927B2 (en)
BE (1) BE816068A (en)
CA (1) CA1003916A (en)
DE (1) DE2426173A1 (en)
FR (1) FR2232842B1 (en)
GB (1) GB1444328A (en)
IT (1) IT1011460B (en)
NL (1) NL7407550A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040453A3 (en) * 1980-05-20 1982-02-17 Philips Electronic And Associated Industries Limited R.f. impedance determination
GB2465210A (en) * 1988-04-08 2010-05-19 Thomson Csf Radant Diode phase-shifting panel and application to a microwave lens and a phased-array antenna

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445099A (en) * 1981-11-20 1984-04-24 Rca Corporation Digital gyromagnetic phase shifter
DE3631981C1 (en) * 1986-09-19 1987-12-17 Georg Dr-Ing Spinner Transformation part for connecting two waveguides with different cross-sectional shapes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623120A (en) * 1950-04-20 1952-12-23 Bell Telephone Labor Inc Microwave filter
GB805920A (en) * 1955-07-07 1958-12-17 Gen Electric Co Ltd Improvements in or relating to waveguide arrangements including windows for passing electromagnetic waves
GB1129185A (en) * 1966-06-10 1968-10-02 Standard Telephones Cables Ltd Improvements in or relating to waveguide filters
FR2032034A5 (en) * 1969-02-17 1970-11-20 Thomson Csf
US3603899A (en) * 1969-04-18 1971-09-07 Bell Telephone Labor Inc High q microwave cavity
GB1312506A (en) * 1970-06-08 1973-04-04 Standard Telephones Cables Ltd Waveguide antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040453A3 (en) * 1980-05-20 1982-02-17 Philips Electronic And Associated Industries Limited R.f. impedance determination
GB2465210A (en) * 1988-04-08 2010-05-19 Thomson Csf Radant Diode phase-shifting panel and application to a microwave lens and a phased-array antenna
GB2465210B (en) * 1988-04-08 2010-09-29 Thomson Csf Radant Diode phase-shifting panel and application to a microwave lens and a phased-array antenna

Also Published As

Publication number Publication date
US3851281A (en) 1974-11-26
JPS5023751A (en) 1975-03-14
DE2426173A1 (en) 1975-01-02
FR2232842A1 (en) 1975-01-03
FR2232842B1 (en) 1979-02-16
CA1003916A (en) 1977-01-18
NL7407550A (en) 1974-12-13
BE816068A (en) 1974-09-30
IT1011460B (en) 1977-01-20
JPS5539927B2 (en) 1980-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940528