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JPS5789305A - Inductive radio antenna - Google Patents

Inductive radio antenna

Info

Publication number
JPS5789305A
JPS5789305A JP55166462A JP16646280A JPS5789305A JP S5789305 A JPS5789305 A JP S5789305A JP 55166462 A JP55166462 A JP 55166462A JP 16646280 A JP16646280 A JP 16646280A JP S5789305 A JPS5789305 A JP S5789305A
Authority
JP
Japan
Prior art keywords
antennas
radio antenna
mutual inductance
inductive radio
coils
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.)
Granted
Application number
JP55166462A
Other languages
Japanese (ja)
Other versions
JPH0371805B2 (en
Inventor
Masataka Kuroda
Yukio Yamamoto
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP55166462A priority Critical patent/JPS5789305A/en
Publication of JPS5789305A publication Critical patent/JPS5789305A/en
Publication of JPH0371805B2 publication Critical patent/JPH0371805B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas

Landscapes

  • Details Of Aerials (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To prevent the influence of two antennas with each other, by coupling magnetically feeders of two antennas which are arranged close to each other. CONSTITUTION:Antennas 1 and 2 are coupled by an auxiliary coupling means 3 consisting of coils 4 and 5. When the mutual inductance of antennas 1 and 2 is denoted as M, the mutual inductance between antennas 1 and 2 is cancelled if coils 4 and 5 are so set that the mutual inductance of the means 3 becomes -M. Consequently, the center length between antennas 1 and 2 is shortened.
JP55166462A 1980-11-25 1980-11-25 Inductive radio antenna Granted JPS5789305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166462A JPS5789305A (en) 1980-11-25 1980-11-25 Inductive radio antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166462A JPS5789305A (en) 1980-11-25 1980-11-25 Inductive radio antenna

Publications (2)

Publication Number Publication Date
JPS5789305A true JPS5789305A (en) 1982-06-03
JPH0371805B2 JPH0371805B2 (en) 1991-11-14

Family

ID=15831842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166462A Granted JPS5789305A (en) 1980-11-25 1980-11-25 Inductive radio antenna

Country Status (1)

Country Link
JP (1) JPS5789305A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710540A (en) * 1980-06-20 1982-01-20 Komatsu Ltd Noise suppression system on induced radio line
JP2011114737A (en) * 2009-11-30 2011-06-09 Funai Electric Co Ltd Multi-antenna apparatus and mobile device
JP2011229143A (en) * 2010-04-02 2011-11-10 Harada Ind Co Ltd Folding monopole antenna
JP2013176139A (en) * 2007-04-20 2013-09-05 Skycross Inc Multimode antenna structure
US9100096B2 (en) 2007-04-20 2015-08-04 Skycross, Inc. Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
US9190726B2 (en) 2007-04-20 2015-11-17 Skycross, Inc. Multimode antenna structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915659A (en) * 1972-06-03 1974-02-12
JPS5212534A (en) * 1975-07-21 1977-01-31 Nippon Telegr & Teleph Corp <Ntt> Display control system
JPS52106659A (en) * 1976-03-04 1977-09-07 Toshiba Corp Antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915659A (en) * 1972-06-03 1974-02-12
JPS5212534A (en) * 1975-07-21 1977-01-31 Nippon Telegr & Teleph Corp <Ntt> Display control system
JPS52106659A (en) * 1976-03-04 1977-09-07 Toshiba Corp Antenna

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710540A (en) * 1980-06-20 1982-01-20 Komatsu Ltd Noise suppression system on induced radio line
JPH0120812B2 (en) * 1980-06-20 1989-04-18 Komatsu Mfg Co Ltd
US9337548B2 (en) 2007-04-20 2016-05-10 Skycross, Inc. Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
JP2013176139A (en) * 2007-04-20 2013-09-05 Skycross Inc Multimode antenna structure
US8803756B2 (en) 2007-04-20 2014-08-12 Skycross, Inc. Multimode antenna structure
US9100096B2 (en) 2007-04-20 2015-08-04 Skycross, Inc. Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
US9190726B2 (en) 2007-04-20 2015-11-17 Skycross, Inc. Multimode antenna structure
US9318803B2 (en) 2007-04-20 2016-04-19 Skycross, Inc. Multimode antenna structure
US9401547B2 (en) 2007-04-20 2016-07-26 Skycross, Inc. Multimode antenna structure
US9660337B2 (en) 2007-04-20 2017-05-23 Achilles Technology Management Co II. Inc. Multimode antenna structure
US9680514B2 (en) 2007-04-20 2017-06-13 Achilles Technology Management Co II. Inc. Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
JP2011114737A (en) * 2009-11-30 2011-06-09 Funai Electric Co Ltd Multi-antenna apparatus and mobile device
JP2011229143A (en) * 2010-04-02 2011-11-10 Harada Ind Co Ltd Folding monopole antenna

Also Published As

Publication number Publication date
JPH0371805B2 (en) 1991-11-14

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