DocumentCode :
2868836
Title :
Power handling of high-Q evanescent-mode tunable filter with integrated piezoelectric actuators
Author :
Chen, Kenle ; Sigmarsson, Hjalti H. ; Peroulis, Dimitrios
Author_Institution :
School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47906, USA
fYear :
2012
fDate :
17-22 June 2012
Firstpage :
1
Lastpage :
3
Abstract :
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.
Keywords :
Cavity resonators; Distortion measurement; Integrated circuit modeling; Nonlinear distortion; Power measurement; Solid modeling; Tuning; Evanescent-mode cavity; filter; high power; piezoelectric; quality factor; tunable;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
ISSN :
0149-645X
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
Type :
conf
DOI :
10.1109/MWSYM.2012.6259720
Filename :
6259720
Link To Document :
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