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LC SIMULATION BY ACTIVE RC LOW-PASS FILTER WITH REDUCED NUMBER OF OPERATIONAL AMPLIFIERS.
被引：0
作者：
Ishibashi, Yukio
[1
]
机构：
[1] Univ of Tsukuba, Tsukuba, Jpn, Univ of Tsukuba, Tsukuba, Jpn
来源：
Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
|
1986年
/
69卷
/
05期
关键词：
AMPLIFIERS;
OPERATIONAL - ELECTRIC FILTERS;
LOW PASS - Computer Simulation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An active RC filter which simulates an LC ladder filter is known to be of lower sensitivity than a cascade filter. A number of filters of this type have been proposed in recent years. This paper describes a synthesis method for LC simulation by an active RC low-pass filter with reduced number of operational amplifiers by using a Sallen-Key circuit for the 2nd-order circuit encountered in the conventional leapfrog composition and by eliminating some of the variables of the input and output sides. We discuss a sign decision method for the node voltage and loop current of a prototype LC filter and the elimination of variables. We derive relations for the variables which should be realized in the circuit and introduce a circuit which can realize them.
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页码：7 / 16
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