GB1450701A - Radar antenna systems - Google Patents

Radar antenna systems

Info

Publication number
GB1450701A
GB1450701A GB4850673A GB4850673A GB1450701A GB 1450701 A GB1450701 A GB 1450701A GB 4850673 A GB4850673 A GB 4850673A GB 4850673 A GB4850673 A GB 4850673A GB 1450701 A GB1450701 A GB 1450701A
Authority
GB
United Kingdom
Prior art keywords
horn
rod
housing
waveguide
axis
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
GB4850673A
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.)
Siemens Schweiz AG
Original Assignee
Siemens Albis AG
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 Siemens Albis AG filed Critical Siemens Albis AG
Publication of GB1450701A publication Critical patent/GB1450701A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence 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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • 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
    • H01Q13/02—Waveguide horns
    • H01Q13/04—Biconical horns

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)

Abstract

1450701 Aerials SIEMENS-ALBIS AG 15 Oct 1973 [17 Oct 1972] 48506/73 Heading H4A An omnidirectional antenna system for a radar device monitoring movement of an object in an area under surveillance comprises a dielectric rod projecting from a waveguide horn, the projecting end of the rod carrying a conical reflector whose tip is directed towards the horn, the edge of the horn having a flange at whose periphery there is a frusto-conical surface extending away from the reflector, the flange and surface forming part of the housing of the device. As described, a housing 4 is axially symmetrical about an axis A, and has at its centre a duplexing arrangement comprising a cavity 2 and a diode 10. A rectangular crosssection waveguide 11 leads from the cavity 2 to a horn 6, and contains a radiator 1 which comprises a dielectric material rod 3. Said rod is graduated in step-wise manner within the waveguide 11, to improve impedance matching, and extends out of the horn 6 in a portion which is of circular cross-section. At the free end of the rod there is a conical reflector 5. The housing 4 provides a transverse flange 7 around the edge of the horn 6, which is continued in a truncated conical surface 8, opposed to the conical reflector 5. The aerial radiates symmetrically about the axis A and, by suitable proportioning of cone angles and sizes of reflecting surfaces, with maximum effect transversely to said axis. The housing 4 may contain a transmitter and associated receiver together with means for producing Doppler-type output signals due to moving targets. The aerial system may be mounted on the roof of a car.
GB4850673A 1972-10-17 1973-10-15 Radar antenna systems Expired GB1450701A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1516172A CH557544A (en) 1972-10-17 1972-10-17 RADAR DEVICE FOR DETECTING THE MOVEMENT OF AN OBJECT IN AN AREA TO BE MONITORED.

Publications (1)

Publication Number Publication Date
GB1450701A true GB1450701A (en) 1976-09-29

Family

ID=4406867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4850673A Expired GB1450701A (en) 1972-10-17 1973-10-15 Radar antenna systems

Country Status (5)

Country Link
CH (1) CH557544A (en)
DE (1) DE2348155A1 (en)
GB (1) GB1450701A (en)
IT (1) IT995824B (en)
NL (1) NL7313748A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030272A1 (en) * 1979-11-19 1981-06-17 Siemens-Albis Aktiengesellschaft Cassegrain antenna
GB2155245A (en) * 1984-02-29 1985-09-18 Standard Telephones Cables Ltd Antenna systems
FR2939567A1 (en) * 2008-12-10 2010-06-11 Advanten High frequency wireless connection antenna for transmitting animated image, has core and pillars arranged such that coupling of core with pillars has intensity at each pillar and/or intensity varies from one section to other of one pillar
CN112335127A (en) * 2018-04-27 2021-02-05 上海诺基亚贝尔股份有限公司 Multiband Radio Frequency (RF) antenna system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4002058A1 (en) * 1990-01-25 1991-08-01 Telefunken Systemtechnik Conical microwave range antenna - has reflector directing emission through cylinder dome for circular polar diagram
EP4231042A1 (en) * 2022-02-22 2023-08-23 Infineon Technologies AG Radar system, device comprising a radar system and method for operating a radar system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030272A1 (en) * 1979-11-19 1981-06-17 Siemens-Albis Aktiengesellschaft Cassegrain antenna
GB2155245A (en) * 1984-02-29 1985-09-18 Standard Telephones Cables Ltd Antenna systems
FR2939567A1 (en) * 2008-12-10 2010-06-11 Advanten High frequency wireless connection antenna for transmitting animated image, has core and pillars arranged such that coupling of core with pillars has intensity at each pillar and/or intensity varies from one section to other of one pillar
CN112335127A (en) * 2018-04-27 2021-02-05 上海诺基亚贝尔股份有限公司 Multiband Radio Frequency (RF) antenna system
CN112335127B (en) * 2018-04-27 2023-09-01 上海诺基亚贝尔股份有限公司 Multi-band Radio Frequency (RF) antenna system

Also Published As

Publication number Publication date
DE2348155A1 (en) 1974-05-02
CH557544A (en) 1974-12-31
IT995824B (en) 1975-11-20
NL7313748A (en) 1974-04-19

Similar Documents

Publication Publication Date Title
US2370053A (en) Directive antenna system
US3404396A (en) Airborne clear air turbulence radar
US2825900A (en) Directional receiver
US20030156056A1 (en) Near-vertical incidence hf radar
WO1991008557A3 (en) Highway vehicle identification system with high gain antenna
US5991474A (en) Obstacle sensor operating by collimation and focusing of the emitted wave
GB8922855D0 (en) Height finding antenna apparatus and method of operation
GB1450701A (en) Radar antenna systems
GB1182629A (en) Improvements in or relating to Communication Systems
GB1267802A (en) Improvements in or relating to front-fed aerial systems
US3158862A (en) Wide-angle electrically-modulated reflector
NO152189C (en) RADAR SYSTEM FOR AIR TRAFFIC MONITORING
US3413636A (en) Radar cross section augmenter
GB1252190A (en)
US2597391A (en) Antenna
US3000007A (en) Radar systems
GB1163156A (en) Improvements in or relating to Paraboloidal Antennae with Counter-Reflectors.
GB1326210A (en) Antenna using at least one reflector
GB805478A (en) Omnidirectional antenna
GB983458A (en) A surface and leaky wave antenna
GB578018A (en) Improvements in or relating to broadcast antennae and especially antennae for centimetre waves
US2440210A (en) Antenna
GB588024A (en) Improvements in or relating to equi-signal radio beacon systems
JPS5443495A (en) Radar device
US2572995A (en) Antenna

Legal Events

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