Design of active circulators using high-speed operational amplifiers

Pin Heng Chen, Ram M. Narayanan

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Design formulas and prototype realizations of an operational amplifier based active circulators operating from dc to 500 MHz are presented. The operational unit of the circulator consists of a chip-resistor based voltage divider and an Op Amp differential amplifier which can be easily fabricated at low cost for general low power applications. An existing widely used circuit is shown to be a special case of the more generalized theory presented in this letter. Our design shows a return loss of greater than 10 dB, an insertion loss flatness within ±0.8 dB, and an isolation greater than 20 dB at frequencies below 500 MHz.

Original languageEnglish (US)
Article number5565365
Pages (from-to)575-577
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume20
Issue number10
DOIs
StatePublished - Oct 1 2010

Fingerprint

operational amplifiers
Operational amplifiers
high speed
differential amplifiers
Voltage dividers
Differential amplifiers
dividers
flatness
Insertion losses
insertion loss
resistors
Resistors
isolation
chips
prototypes
Networks (circuits)
electric potential
Costs

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Design of active circulators using high-speed operational amplifiers. / Chen, Pin Heng; Narayanan, Ram M.

In: IEEE Microwave and Wireless Components Letters, Vol. 20, No. 10, 5565365, 01.10.2010, p. 575-577.

Research output: Contribution to journalArticle

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