By Topic

Power handling of high-Q evanescent-mode tunable filter with integrated piezoelectric actuators

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Kenle Chen ; School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, USA ; Hjalti H. Sigmarsson ; Dimitrios Peroulis

This paper investigates for the first time the power handling versus tuning ratio trade-off for high-quality-factor (high-Q) evanescent-mode tunable cavity bandpass filters with piezoelectric actuators. A non-linear circuit model is proposed to prescribe the high-power effects on the filter performance. A new parameter, distortion ratio (DR), is utilized to quantify the non-linear frequency-response distortion induced by unwanted displacements of the filter's piezoelectric actuators due to high-power RF signals. Both experimental and theoretical results yield a nearly linear relationship between the filter tuning ratio and the input power (in dBm). The presented filter can successfully handle a 1-W power while being tuned from 1.7–2.8 GHz (1.65 ∶ 1 tuning ratio) with less than 10% distortion ratio. For a 10-W operation, the tuning range is reduced to 2.2–2.8 GHz (1.28 ∶ 1) with the same distortion ratio.

Published in:

Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International

Date of Conference:

17-22 June 2012