JPS6451802A - Adaptive antenna - Google Patents

Adaptive antenna

Info

Publication number
JPS6451802A
JPS6451802A JP20955087A JP20955087A JPS6451802A JP S6451802 A JPS6451802 A JP S6451802A JP 20955087 A JP20955087 A JP 20955087A JP 20955087 A JP20955087 A JP 20955087A JP S6451802 A JPS6451802 A JP S6451802A
Authority
JP
Japan
Prior art keywords
variable
input signal
circuit
weights
variable weight
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
JP20955087A
Other languages
Japanese (ja)
Other versions
JP2645372B2 (en
Inventor
Tomoyuki Ooshima
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment 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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Priority to JP62209550A priority Critical patent/JP2645372B2/en
Publication of JPS6451802A publication Critical patent/JPS6451802A/en
Application granted granted Critical
Publication of JP2645372B2 publication Critical patent/JP2645372B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To obtain a high definition output with excellent S/N by using a variable weight circuit where plural variable weights are connected in series so as to expand the amplitude control range of an input signal and to improve the D/U. CONSTITUTION:Variable/e weights Wma, Wmb are connected in series in a variable weight circuit W1a, an input signal X1 is given to one terminal and the other terminal is connected to a sum circuit SIGMA1 and a control signal Wc1a is connected to the variable weights Wma, Wmb via a root circuit Wmc and the other variable weight circuits W1b, Wna, Wnb are of the same constitution. A desired wave D and an undesired wave U given to an Ant1 are separated into orthogonal signals X1, X2 by a 90 deg. distributer QH1, the variable weight circuits W1a, W1b are used to control the amplitude and phase by using a control section C1 equivalently. Thus, the amplitude control range of the input signal is expanded and the desired wave versus undesired wave ratio D/U is improved by an input signal of a wide range of electric field strength and an output with excellent S/N is obtained.
JP62209550A 1987-08-24 1987-08-24 Adaptive antenna Expired - Lifetime JP2645372B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62209550A JP2645372B2 (en) 1987-08-24 1987-08-24 Adaptive antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62209550A JP2645372B2 (en) 1987-08-24 1987-08-24 Adaptive antenna

Publications (2)

Publication Number Publication Date
JPS6451802A true JPS6451802A (en) 1989-02-28
JP2645372B2 JP2645372B2 (en) 1997-08-25

Family

ID=16574672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62209550A Expired - Lifetime JP2645372B2 (en) 1987-08-24 1987-08-24 Adaptive antenna

Country Status (1)

Country Link
JP (1) JP2645372B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151503A (en) * 1983-02-17 1984-08-30 Toshiba Corp Adaptive antenna device
JPS62154902A (en) * 1985-12-27 1987-07-09 Toshiba Corp Combined diversity receiving antenna
JPS62173802A (en) * 1986-01-28 1987-07-30 Toshiba Corp Adaptive antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151503A (en) * 1983-02-17 1984-08-30 Toshiba Corp Adaptive antenna device
JPS62154902A (en) * 1985-12-27 1987-07-09 Toshiba Corp Combined diversity receiving antenna
JPS62173802A (en) * 1986-01-28 1987-07-30 Toshiba Corp Adaptive antenna

Also Published As

Publication number Publication date
JP2645372B2 (en) 1997-08-25

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