JPS572102A - Loop antenna for car-to-ground communication - Google Patents

Loop antenna for car-to-ground communication

Info

Publication number
JPS572102A
JPS572102A JP7435880A JP7435880A JPS572102A JP S572102 A JPS572102 A JP S572102A JP 7435880 A JP7435880 A JP 7435880A JP 7435880 A JP7435880 A JP 7435880A JP S572102 A JPS572102 A JP S572102A
Authority
JP
Japan
Prior art keywords
antenna
car
electric field
loop antenna
point
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.)
Pending
Application number
JP7435880A
Other languages
Japanese (ja)
Inventor
Jiro Takezaki
Akira Endo
Takanori Shibata
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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7435880A priority Critical patent/JPS572102A/en
Publication of JPS572102A publication Critical patent/JPS572102A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Landscapes

  • Details Of Aerials (AREA)

Abstract

PURPOSE:To shield the electric field noise in a receiving mode and to suppress the field radiation in a transmitting mode, by forming a shielding conductor of a loop antenna which carries out a communication with a car on a road into such a structure in that the shielding coat is cut at a point symmetrical to the input side. CONSTITUTION:A loop antenna 1 put on a road is connected to a ground communication set and carries out a communication with an antenna 4 mounted on a car 3 and when the car 3 passes through the antenna 1. An antenna core wire 13 of the antenna 1 is covered with a shielding conductor 12. The conductor 12 is cut at a symmetrical point in terms of an antenna input part B, i.e. at point A where lenghts L1 and L2 are equal and furthermore connected electrically to a shielding conductor 14 of a cable 11 at the part B to be fixed at a specific potential. In such constitution, an induction of the electric field noise can be prevented in a receiving mode, and a radiation of unnecessary electric field can be suppressed in a transmitting mode.
JP7435880A 1980-06-04 1980-06-04 Loop antenna for car-to-ground communication Pending JPS572102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7435880A JPS572102A (en) 1980-06-04 1980-06-04 Loop antenna for car-to-ground communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7435880A JPS572102A (en) 1980-06-04 1980-06-04 Loop antenna for car-to-ground communication

Publications (1)

Publication Number Publication Date
JPS572102A true JPS572102A (en) 1982-01-07

Family

ID=13544818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7435880A Pending JPS572102A (en) 1980-06-04 1980-06-04 Loop antenna for car-to-ground communication

Country Status (1)

Country Link
JP (1) JPS572102A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0948083A2 (en) * 1998-03-31 1999-10-06 Kabushiki Kaisha Toshiba Loop antenna device and its use in a data processing apparatus with a removal data storing medium
US7345644B2 (en) 2003-03-19 2008-03-18 Sony Corporation Antenna device, and method of manufacturing antenna device
US8545097B2 (en) 2010-11-04 2013-10-01 Heraeus Sensor Technology Gmbh Turbocharger overheating protection device and method of its manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0948083A2 (en) * 1998-03-31 1999-10-06 Kabushiki Kaisha Toshiba Loop antenna device and its use in a data processing apparatus with a removal data storing medium
EP0948083A3 (en) * 1998-03-31 2000-09-13 Kabushiki Kaisha Toshiba Loop antenna device and its use in a data processing apparatus with a removal data storing medium
US6243045B1 (en) 1998-03-31 2001-06-05 Kabushiki Kaisha Toshiba Removal data storing medium having loop antenna
US7345644B2 (en) 2003-03-19 2008-03-18 Sony Corporation Antenna device, and method of manufacturing antenna device
US8545097B2 (en) 2010-11-04 2013-10-01 Heraeus Sensor Technology Gmbh Turbocharger overheating protection device and method of its manufacture

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