GB1113665A – Leaky waveguide aerials
– Google Patents
GB1113665A – Leaky waveguide aerials
– Google Patents
Leaky waveguide aerials
Info
Publication number
GB1113665A
GB1113665A
GB41895/66A
GB4189566A
GB1113665A
GB 1113665 A
GB1113665 A
GB 1113665A
GB 41895/66 A
GB41895/66 A
GB 41895/66A
GB 4189566 A
GB4189566 A
GB 4189566A
GB 1113665 A
GB1113665 A
GB 1113665A
Authority
GB
United Kingdom
Prior art keywords
projector
deflectors
slot
wave
plates
Prior art date
1964-04-30
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
GB41895/66A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
1964-04-30
Filing date
1965-04-22
Publication date
1968-05-15
1964-04-30
Priority claimed from JP39024227A
external-priority
patent/JPS497025B1/ja
1965-04-22
Application filed by Hitachi Ltd
filed
Critical
Hitachi Ltd
1968-05-15
Publication of GB1113665A
publication
Critical
patent/GB1113665A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01Q—ANTENNAS, i.e. RADIO AERIALS
H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
B—PERFORMING OPERATIONS; TRANSPORTING
B61—RAILWAYS
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
B—PERFORMING OPERATIONS; TRANSPORTING
B61—RAILWAYS
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
B61L23/041—Obstacle detection
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
G01S13/88—Radar or analogous systems specially adapted for specific applications
G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01Q—ANTENNAS, i.e. RADIO AERIALS
H01Q1/00—Details of, or arrangements associated with, antennas
H01Q1/27—Adaptation for use in or on movable bodies
H01Q1/32—Adaptation for use in or on road or rail vehicles
H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
H01Q1/3225—Cooperation with the rails or the road
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01Q—ANTENNAS, i.e. RADIO AERIALS
H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
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
G01S13/88—Radar or analogous systems specially adapted for specific applications
G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
G01S2013/93185—Controlling the brakes
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
G01S13/88—Radar or analogous systems specially adapted for specific applications
G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
G01S2013/9328—Rail vehicles
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
G01S13/88—Radar or analogous systems specially adapted for specific applications
G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
G01S2013/9329—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles cooperating with reflectors or transponders
Abstract
1,113,665. Aerials. HITACHI SEISAKUSHO KABUSHIKI KAISHA. 22 April, 1965 [30 April, 1964 (2); 24 June, 1964; 29 June, 1964], No. 41895/66. Divided out of 1,113,664. Heading H4A. In a waveguide aerial having an axial slot or series of slots in its wall to produce leaky waves which emerge at an angle of less than 45 degrees to the axial direction, plates are regularly spaced and associated with the slot(s) and are at a constant orientation relative to the aerial axis. In one form the arrangement consists of a layer of plastic formed around a helical conductor of wide pitch, a longitudinally slotted conductive layer around the plastic layer, and V-plates protruding from the vicinity of the slot. Alternately-orthogonal slots may be employed. To reduce side-lobes, e.g. in a railway obstacle detection system, a wave-concentrating projector is provided on the leaky waveguide in the vicinity of its slot(s) together with wave deflectors at intervals at the outlet of the projector; the deflectors may be flat and parallel plates within the projector and fully across it. In further embodiments the deflectors are staggered and not fully across the projector. The deflectors may be curved to act additionally as wave concentrators.
GB41895/66A
1964-04-30
1965-04-22
Leaky waveguide aerials
Expired
GB1113665A
(en)
Applications Claiming Priority (5)
Application Number
Priority Date
Filing Date
Title
JP39024227A
JPS497025B1
(en)
1964-04-30
1964-04-30
JP2422864
1964-04-30
JP3377064
1964-06-16
JP4956064
1964-06-24
JP3635064
1964-06-29
Publications (1)
Publication Number
Publication Date
GB1113665A
true
GB1113665A
(en)
1968-05-15
Family
ID=27520617
Family Applications (2)
Application Number
Title
Priority Date
Filing Date
GB41895/66A
Expired
GB1113665A
(en)
1964-04-30
1965-04-22
Leaky waveguide aerials
GB17060/65A
Expired
GB1113664A
(en)
1964-04-30
1965-04-22
Obstacle detection system
Family Applications After (1)
Application Number
Title
Priority Date
Filing Date
GB17060/65A
Expired
GB1113664A
(en)
1964-04-30
1965-04-22
Obstacle detection system
Country Status (2)
Country
Link
US
(1)
US3560970A
(en)
GB
(2)
GB1113665A
(en)
Families Citing this family (18)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3707709A
(en)
*
1970-09-24
1972-12-26
David Wolf
Detection system
US3781725A
(en)
*
1972-05-04
1973-12-25
Sumitomo Electric Industries
Leaky coaxial cable
US3795915A
(en)
*
1972-10-20
1974-03-05
Sumitomo Electric Industries
Leaky coaxial cable
US3947834A
(en)
*
1974-04-30
1976-03-30
E-Systems, Inc.
Doppler perimeter intrusion alarm system using a leaky waveguide
DE2507191C2
(en)
*
1975-02-20
1986-01-02
kabelmetal electro GmbH, 3000 Hannover
Device for the transmission of high frequency signals
DE2812523A1
(en)
*
1978-03-22
1979-09-27
Kabel Metallwerke Ghh
RADIATING COAXIAL HIGH FREQUENCY CABLE
GB2053480B
(en)
*
1979-07-06
1983-05-18
Seltrust Eng Ltd
Position or movement sensor
US4327358A
(en)
*
1980-02-29
1982-04-27
The United States Of America As Represented By The Secretary Of The Air Force
Physical deterrent barrier with upward looking detection sensor for intruder detection system
US4375057A
(en)
*
1980-12-10
1983-02-22
Otis Elevator Company
Position sensor
US4571578A
(en)
*
1983-04-19
1986-02-18
The United States Of America As Represented By The Secretary Of The Air Force
Intrusion barrier and detection apparatus
US4588988A
(en)
*
1984-06-06
1986-05-13
The United States Of America As Represented By The Secretary Of The Air Force
Intrusion barrier and detection apparatus
GB2236907B
(en)
*
1989-09-20
1994-04-13
Beam Company Limited
Travelling-wave feeder type coaxial slot antenna
FR2664747B1
(en)
*
1990-07-10
1992-11-20
Europ Agence Spatiale
FREQUENCY VARIATION SCANNING ANTENNA.
US5805767A
(en)
*
1996-01-16
1998-09-08
Jouas; Gary
Electronically-controlled heater
FR2907249B1
(en)
*
2006-10-13
2014-01-31
Inrets
DEVICE AND METHOD FOR DETECTING THE PRESENCE OF AN OBJECT
US8169356B2
(en)
*
2007-12-31
2012-05-01
Honeywell International Inc.
Anti-mask motion sensor
FR2936891B1
(en)
*
2008-10-07
2013-03-15
Bubendorff
DEVICE FOR DETECTING THE PRESENCE OF AN OBJECT OR A LIVING BEING
CN114696103A
(en)
*
2020-12-31
2022-07-01
江苏俊知技术有限公司
Leaky circular waveguide module suitable for MIMO technology and manufacturing method thereof
1965
1965-04-22
GB
GB41895/66A
patent/GB1113665A/en
not_active
Expired
1965-04-22
GB
GB17060/65A
patent/GB1113664A/en
not_active
Expired
1968
1968-09-13
US
US759712A
patent/US3560970A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
GB1113664A
(en)
1968-05-15
US3560970A
(en)
1971-02-02
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None