An FBAR Circulator

Mert M. Torunbalci,Trevor J. Odelberg,Suresh Sridaran,Richard C. Ruby,Sunil A. Bhave

IEEE Microwave and Wireless Components Letters（2018）

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摘要

This letter presents the experimental demonstration of a film bulk acoustic resonator (FBAR) circulator at 2.5 GHz. The circulator is based on spatiotemporal modulation of the series resonant frequency of FBARs using varactors and exhibits a large isolation of 76 dB at 2.5 GHz. The FBAR chip (0.25 mm2) consists of three identical FBARs connected in wye configuration. FBAR's quality factor (Q) of 1...

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关键词

Film bulk acoustic resonators,Circulators,Varactors,Resonant frequency,Frequency modulation

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