JPS5523625A - Weighting circuit - Google Patents

Weighting circuit

Info

Publication number
JPS5523625A
JPS5523625A JP9582178A JP9582178A JPS5523625A JP S5523625 A JPS5523625 A JP S5523625A JP 9582178 A JP9582178 A JP 9582178A JP 9582178 A JP9582178 A JP 9582178A JP S5523625 A JPS5523625 A JP S5523625A
Authority
JP
Japan
Prior art keywords
weighting
voltage
fetq51
input
weighting coefficient
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
JP9582178A
Other languages
Japanese (ja)
Inventor
Masayuki Katakura
Kenro Sakagami
Masaru Sakurai
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 JP9582178A priority Critical patent/JPS5523625A/en
Publication of JPS5523625A publication Critical patent/JPS5523625A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters
    • H03H15/02—Transversal filters using analogue shift registers
    • H03H15/023—Transversal filters using analogue shift registers with parallel-input configuration

Landscapes

  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To obtain excellent linearity and to eliminate the DC power consumption, by using two phase input signals of positive and negative phase and MOSFET as variable resistance element. CONSTITUTION:The weighting circuit of the programmable input weighting type transversal filter is constituted with MOSFETQ51 and Q52, the input signals of positive and negative phase are fed to the terminals 32 and 33, and the ratio of addition is changed with the channel conductance, to control the weighting coefficient. That is, in the input and output characteristics of the signal conversion circuit 51 (V1 is the weighting voltage fed to the input terminal 53, and V2, V3 are output voltage), the minimum voltage V1 of V2 and V3 is set less than the cut off voltage of FETQ51 and Q52, resulting in being always in OFF state for either of FETQ51 or Q52, accordingly, this means either one of FETQ51 or Q52 is selected depending on the polarity of the weighting coefficient, and the channel conductance is controlled corresponding to the absolute value of the weighting coefficient.
JP9582178A 1978-08-08 1978-08-08 Weighting circuit Pending JPS5523625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9582178A JPS5523625A (en) 1978-08-08 1978-08-08 Weighting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9582178A JPS5523625A (en) 1978-08-08 1978-08-08 Weighting circuit

Publications (1)

Publication Number Publication Date
JPS5523625A true JPS5523625A (en) 1980-02-20

Family

ID=14148066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9582178A Pending JPS5523625A (en) 1978-08-08 1978-08-08 Weighting circuit

Country Status (1)

Country Link
JP (1) JPS5523625A (en)

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