JPS57120177A - Complex 4-quadrant multiplier - Google Patents

Complex 4-quadrant multiplier

Info

Publication number
JPS57120177A
JPS57120177A JP510381A JP510381A JPS57120177A JP S57120177 A JPS57120177 A JP S57120177A JP 510381 A JP510381 A JP 510381A JP 510381 A JP510381 A JP 510381A JP S57120177 A JPS57120177 A JP S57120177A
Authority
JP
Japan
Prior art keywords
circuit
complex
result
input terminal
multiplication
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
JP510381A
Other languages
Japanese (ja)
Other versions
JPS612991B2 (en
Inventor
Shinji Ono
Motoyasu Tanaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP510381A priority Critical patent/JPS57120177A/en
Publication of JPS57120177A publication Critical patent/JPS57120177A/en
Publication of JPS612991B2 publication Critical patent/JPS612991B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/163—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division using a variable impedance controlled by one of the input signals, variable amplification or transfer function

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To realize a complex 4-quadrant multiplication having excellent linearity, by using an adverse phase branching circuit, 4 variable resistance elements, two differential amplifying circuits and a signal synthesizing/coupling circuit. CONSTITUTION:When a pass band signal is supplied to an input terminal 1, the output of a branching circuit 4 passes through variable resistance elements 51, 52, 53 and 54. The current flowing to the elements 51 and 53 is controlled by a differential amplifying circuit 61. While the current flowing to the elements 52 and 54 is controlled by a differential amplifying circuit 62. When the real number part of the complex base band signal is applied to an input terminal 2, the input signal plus the result of a 4-quadrant multiplication of the real number part are delivered. When the imaginary part of the complex base band signal is applied to an input terminal 3, the input signal plus the result of the 4- quadrant multiplication are delivered. The result 6 of these two multiplication are coupled to each other by a 90 deg.-coupling circuit 7.
JP510381A 1981-01-19 1981-01-19 Complex 4-quadrant multiplier Granted JPS57120177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP510381A JPS57120177A (en) 1981-01-19 1981-01-19 Complex 4-quadrant multiplier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP510381A JPS57120177A (en) 1981-01-19 1981-01-19 Complex 4-quadrant multiplier

Publications (2)

Publication Number Publication Date
JPS57120177A true JPS57120177A (en) 1982-07-27
JPS612991B2 JPS612991B2 (en) 1986-01-29

Family

ID=11602026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP510381A Granted JPS57120177A (en) 1981-01-19 1981-01-19 Complex 4-quadrant multiplier

Country Status (1)

Country Link
JP (1) JPS57120177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107615389A (en) * 2016-02-25 2018-01-19 慧与发展有限责任合伙企业 Perform complex multiplication accumulating operation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07285297A (en) * 1994-04-18 1995-10-31 Akiyoshi Kagitani Attaching method of a plurality of decorative articles to container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107615389A (en) * 2016-02-25 2018-01-19 慧与发展有限责任合伙企业 Perform complex multiplication accumulating operation
US11507761B2 (en) 2016-02-25 2022-11-22 Hewlett Packard Enterprise Development Lp Performing complex multiply-accumulate operations

Also Published As

Publication number Publication date
JPS612991B2 (en) 1986-01-29

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