Realization of a multiport gyrator using current mirror circuits

Takeshi Kawashima, Akio Ishiguro, Shigeru Okuma

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number4
Publication statusPublished - 2002 Jun 1
Externally publishedYes


  • Continuous-time filter
  • Current mirror
  • Current mode
  • Gyrator

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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