JPS5617536A - Radio receiving device - Google Patents

Radio receiving device

Info

Publication number
JPS5617536A
JPS5617536A JP9386679A JP9386679A JPS5617536A JP S5617536 A JPS5617536 A JP S5617536A JP 9386679 A JP9386679 A JP 9386679A JP 9386679 A JP9386679 A JP 9386679A JP S5617536 A JPS5617536 A JP S5617536A
Authority
JP
Japan
Prior art keywords
directivity
level
received signal
transiting
antenna
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
JP9386679A
Other languages
Japanese (ja)
Other versions
JPS6216584B2 (en
Inventor
Fumio Ikegami
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9386679A priority Critical patent/JPS5617536A/en
Publication of JPS5617536A publication Critical patent/JPS5617536A/en
Publication of JPS6216584B2 publication Critical patent/JPS6216584B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To eliminate the level reduction of the received signal in the transition process of directivity, by giving an automatic decision to the transiting direction of directivity in which the level of the received signal increases for the variable directional antenna and then giving the transition control. CONSTITUTION:The signal is recived at 22 via variable directional antenna 10 which can transit in the transiting directions of different states of directivity. The directivity of antenna 10 is changed in a minute amount and periodically by sensing signal generator 20, and the transiting direction of the state of directivity in which the level of the received signal increases is decided by phase comparator 24 and based on the changing state of the received signal of receiver 22 which is caused by the variation of the directivity. And this transiting direction is detected by level detector 23 when the level of the received signal of receiver 22 lowers less than the prescribed threshold level, and then transited to the transisting direction in which the state of directivity is decided for antenna 10 in order to give control 25.
JP9386679A 1979-07-24 1979-07-24 Radio receiving device Granted JPS5617536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9386679A JPS5617536A (en) 1979-07-24 1979-07-24 Radio receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9386679A JPS5617536A (en) 1979-07-24 1979-07-24 Radio receiving device

Publications (2)

Publication Number Publication Date
JPS5617536A true JPS5617536A (en) 1981-02-19
JPS6216584B2 JPS6216584B2 (en) 1987-04-13

Family

ID=14094361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9386679A Granted JPS5617536A (en) 1979-07-24 1979-07-24 Radio receiving device

Country Status (1)

Country Link
JP (1) JPS5617536A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0902498A4 (en) * 1997-03-18 2000-05-10 Mitsubishi Electric Corp VARIABLE DIRECTIVITY ANTENNA AND ITS CONTROL METHOD
US7603077B2 (en) 2004-06-25 2009-10-13 Funai Electric Co., Ltd. Broadcast receiver with automatic channel scanning
JP2012523801A (en) * 2009-04-13 2012-10-04 ビアサット・インコーポレイテッド Active phased array architecture
US9843107B2 (en) 2009-04-13 2017-12-12 Viasat, Inc. Multi-beam active phased array architecture with independent polarization control
US10516219B2 (en) 2009-04-13 2019-12-24 Viasat, Inc. Multi-beam active phased array architecture with independent polarization control

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522296A (en) * 1975-06-24 1977-01-08 Kokusai Denshin Denwa Co Ltd <Kdd> Satellite tracing system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522296A (en) * 1975-06-24 1977-01-08 Kokusai Denshin Denwa Co Ltd <Kdd> Satellite tracing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0902498A4 (en) * 1997-03-18 2000-05-10 Mitsubishi Electric Corp VARIABLE DIRECTIVITY ANTENNA AND ITS CONTROL METHOD
US7603077B2 (en) 2004-06-25 2009-10-13 Funai Electric Co., Ltd. Broadcast receiver with automatic channel scanning
JP2012523801A (en) * 2009-04-13 2012-10-04 ビアサット・インコーポレイテッド Active phased array architecture
US9843107B2 (en) 2009-04-13 2017-12-12 Viasat, Inc. Multi-beam active phased array architecture with independent polarization control
US10305199B2 (en) 2009-04-13 2019-05-28 Viasat, Inc. Multi-beam active phased array architecture with independent polarization control
US10516219B2 (en) 2009-04-13 2019-12-24 Viasat, Inc. Multi-beam active phased array architecture with independent polarization control

Also Published As

Publication number Publication date
JPS6216584B2 (en) 1987-04-13

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