JPS60180133U

JPS60180133U - cyclic filter device

Info

Publication number: JPS60180133U
Application number: JP15416484U
Authority: JP
Inventors: 義博宮本
Original assignee: Fujitsu Ltd
Current assignee: Fujitsu Ltd
Priority date: 1984-10-11
Filing date: 1984-10-11
Publication date: 1985-11-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は巡回型フィルタ装置の等価回路を示す回路系統
図、第２図は従来の巡回型フィルタ装置の構成を示す回
路系統図、第３図は本考案の基本的実施例を示す回路系
統図、第４図および第５図は本考案のそれぞれ異なった
実施例を示す回路系統図である。１：入力端子、２：第１加算点、３：第２加算点、４お
よび５：遅延回路、６，７．８：重み付は回路、９：出
力端子、ＡおよびＢ　：　ＣＴＩ）、　２１〜２４：電
圧−電荷変換部、２５：差動増幅器、２６，２７：電荷
と電圧との変換部、３１：入力端子、３２：入力信号源
、３３：電圧と電荷との変換用コンデンサ、３５：Ｃ３
増幅器の入力ｉ子、３６：帰還用コンデンサ、゛３７：
入力端子と接地間の総容量、３３：Ｃ３増幅器の出力端
子、３０Ａおよび３０Ｂ　：ＣＴＤ、　４１〜４４：電
圧と電荷との変換部、４１Ｇ〜４４Ｇ＝第１ゲート電極
、４１ｇ〜４４ｇ：第２ゲート電極、Ｄ：σ■入５１〜
５４：変換部。補正　昭５９．１１゜９実用新案登録請求の範囲を次のように補正する。　　′ Ｏ実用新案登録請求の範囲入力信号をその電圧に比例する電荷に変換する荷電圧゛
換コンデンサを今して該入力百号が入力されるとともに
、該入力された信号に対し、所定の遅延を与える電荷転
送素子と、該電荷転送素ノ出力。に接、され、帰一コン
デンサを持つ荷比例型増幅器を有し、該電圧電荷変換コ
ンデンサと該帰還コンデンサの容量を略等しくしたこと
炙特徴火すゑ巡回型フィルタ装置。Fig. 1 is a circuit diagram showing an equivalent circuit of a recursive filter device, Fig. 2 is a circuit diagram showing the configuration of a conventional recursive filter device, and Fig. 3 is a circuit diagram showing a basic embodiment of the present invention. 4 and 5 are circuit diagrams showing different embodiments of the present invention. 1: Input terminal, 2: First addition point, 3: Second addition point, 4 and 5: Delay circuit, 6, 7.8: Weighting circuit, 9: Output terminal, A and B: CTI), 21 ~24: Voltage-charge converter, 25: Differential amplifier, 26, 27: Charge-to-voltage converter, 31: Input terminal, 32: Input signal source, 33: Capacitor for converting voltage and charge, 35 :C3
Amplifier input terminal, 36: Feedback capacitor, ゛37:
Total capacitance between input terminal and ground, 33: Output terminal of C3 amplifier, 30A and 30B: CTD, 41 to 44: Voltage to charge conversion section, 41G to 44G = first gate electrode, 41g to 44g: second Gate electrode, D: σ■ input 51~
54: Conversion section. Amendment November 9, 1982 The scope of claims for utility model registration is amended as follows. ' O Utility Model Registration Claims The input signal is input through a charged voltage conversion capacitor that converts the input signal into a charge proportional to the voltage, and the input signal is processed with a predetermined delay. A charge transfer element that provides a charge transfer element and an output of the charge transfer element. A recursive filter device is characterized in that it has a load-proportional amplifier with a feedback capacitor connected to the voltage-to-charge converter capacitor and the feedback capacitor having substantially equal capacitances.

Claims

[Scope of utility model registration request]

A voltage that converts an input signal voltage into a charge proportional to the voltage.
A charge conversion unit, a charge transfer element that transfers the charge output from the conversion unit to provide a predetermined delay, and a charge proportionality unit that applies the charge output from the charge transfer element and generates an output proportional to the amount of charge. 1. A recursive filter device comprising: a charge-proportional amplifier; and a return path for converting the output of the charge-proportional amplifier back into charge and returning it to the charge transfer element.