JPS6477230A - Indoor radio communication system - Google Patents

Indoor radio communication system

Info

Publication number
JPS6477230A
JPS6477230A JP33272087A JP33272087A JPS6477230A JP S6477230 A JPS6477230 A JP S6477230A JP 33272087 A JP33272087 A JP 33272087A JP 33272087 A JP33272087 A JP 33272087A JP S6477230 A JPS6477230 A JP S6477230A
Authority
JP
Japan
Prior art keywords
antennas
circularly polarized
rotation directions
polarized waves
indoor
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
JP33272087A
Other languages
Japanese (ja)
Inventor
Toru Iwai
Yoshizo Shibano
Junichi Ikeda
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 JP33272087A priority Critical patent/JPS6477230A/en
Publication of JPS6477230A publication Critical patent/JPS6477230A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To improve the quality of communication between indoor antennas and a terminal equipment by arranging plural antennas through a signal line laid in a ceiling in a house so that adjacent indoor antennas transmit and receive circularly polarized waves in opposite rotation directions. CONSTITUTION:Circularly polarized waves in opposite rotation directions are radiated from indoor antennas 3, and circularly polarized waves in corresponding rotation directions are received by circularly polarized wave upward beam antennas 61 and 62 respectively. Since a part of signals received by antennas 61 and 62 is led to a comparator 57 through branch lines 55 and 56, the antenna from which the reception level is higher is discriminated. On the basis of this discrimination result, a controller 54 connects the output of the antenna, from which the reception signal level is higher, to a transmitter-receiver 51.
JP33272087A 1987-06-15 1987-12-28 Indoor radio communication system Pending JPS6477230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33272087A JPS6477230A (en) 1987-06-15 1987-12-28 Indoor radio communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14863787 1987-06-15
JP33272087A JPS6477230A (en) 1987-06-15 1987-12-28 Indoor radio communication system

Publications (1)

Publication Number Publication Date
JPS6477230A true JPS6477230A (en) 1989-03-23

Family

ID=26478768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33272087A Pending JPS6477230A (en) 1987-06-15 1987-12-28 Indoor radio communication system

Country Status (1)

Country Link
JP (1) JPS6477230A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155494A (en) * 1989-12-08 1992-10-13 Larsen Electronics, Inc. Vehicle antenna system
US5463405A (en) * 1994-05-20 1995-10-31 Valor Enterprises, Inc. Cellular telephone coupling network
EP0702462A1 (en) * 1994-09-12 1996-03-20 AT&T Corp. Wireless communication system using distributed switched antennas
US5600333A (en) * 1995-01-26 1997-02-04 Larsen Electronics, Inc. Active repeater antenna assembly
US5898408A (en) * 1995-10-25 1999-04-27 Larsen Electronics, Inc. Window mounted mobile antenna system using annular ring aperture coupling
US6172651B1 (en) 1995-10-25 2001-01-09 Larsen Electronics, Inc. Dual-band window mounted antenna system for mobile communications
WO2002095866A1 (en) * 2001-05-22 2002-11-28 Andrew Corporation Repeater for radio signals
US7853978B2 (en) 2004-04-16 2010-12-14 Endres Thomas J Remote antenna and local receiver subsystems for receiving data signals carried over analog television
JP2015039218A (en) * 2014-10-09 2015-02-26 株式会社日立製作所 Polarization angle division diversity radio transmitter, radio receiver, and radio communication system
US9407349B2 (en) 2011-03-09 2016-08-02 Hitachi, Ltd. Polarization-angle-division diversity wireless transmitter, wireless receiver, and wireless communication system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155494A (en) * 1989-12-08 1992-10-13 Larsen Electronics, Inc. Vehicle antenna system
USRE36076E (en) * 1989-12-08 1999-02-02 Larsen Electronics, Inc. Vehicle antenna system
US5463405A (en) * 1994-05-20 1995-10-31 Valor Enterprises, Inc. Cellular telephone coupling network
EP0702462A1 (en) * 1994-09-12 1996-03-20 AT&T Corp. Wireless communication system using distributed switched antennas
US5600333A (en) * 1995-01-26 1997-02-04 Larsen Electronics, Inc. Active repeater antenna assembly
US6172651B1 (en) 1995-10-25 2001-01-09 Larsen Electronics, Inc. Dual-band window mounted antenna system for mobile communications
US5898408A (en) * 1995-10-25 1999-04-27 Larsen Electronics, Inc. Window mounted mobile antenna system using annular ring aperture coupling
WO2002095866A1 (en) * 2001-05-22 2002-11-28 Andrew Corporation Repeater for radio signals
US7027770B2 (en) 2001-05-22 2006-04-11 Andrew Corporation Repeater for customer premises
US7853978B2 (en) 2004-04-16 2010-12-14 Endres Thomas J Remote antenna and local receiver subsystems for receiving data signals carried over analog television
US9407349B2 (en) 2011-03-09 2016-08-02 Hitachi, Ltd. Polarization-angle-division diversity wireless transmitter, wireless receiver, and wireless communication system
US9722687B2 (en) 2011-03-09 2017-08-01 Hitachi, Ltd. Polarization-angle-division diversity wireless transmitter, wireless receiver, and wireless communication system
JP2015039218A (en) * 2014-10-09 2015-02-26 株式会社日立製作所 Polarization angle division diversity radio transmitter, radio receiver, and radio communication system

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