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Realization of a multiport gyrator using current mirror circuits

✍ Scribed by Kenichi Kubota; Mitsuo Okine

Publisher: John Wiley and Sons
Year: 2002
Tongue: English
Weight: 193 KB
Volume: 139
Category: Article
ISSN: 0424-7760
DOI: 10.1002/eej.1167

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✦ Synopsis

Abstract

A current‐mode signal processing circuit is quite attractive for low supply voltage operation and high‐frequency application. A current‐mode continuous‐time filter consists of simple bipolar current mirrors and capacitors, and are quite suitable for monolithic integration. In this paper, we propose a design for a multiport gyrator using current mirror circuits. Using the multiport gyrator and capacitors, we can simulate passive LC filters. The tuning of the filter frequency can be achieved by adjusting the current of a single dc current course. As examples, third‐ and fifth‐order low‐pass filters are designed for frequencies of 20 to 80 MHz, and SPICE simulation results are shown to demonstrate the effectiveness of the proposed method. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 139(4): 41–47, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.1167

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