Low-loss, broadly-tunable cavity filter operating at UHF frequencies

Author

Scarbrough, D. ; Psychogiou, D. ; Peroulis, D. ; Goldsmith, C.

Author_Institution

MEMtronics Corp., Plano, TX, USA

fYear

2015

fDate

17-22 May 2015

Firstpage

1

Lastpage

4

Abstract

A four-pole tunable filter has been demonstrated at UHF frequencies which tunes 300 MHz to 700 MHz and exhibits mid-band losses between 0.5 dB and 0.9 dB. This filter incorporates piezo-electric tuning of capacitively-loaded cavities and frequency-tailored input/output coupling networks to maintain good impedance match across more than an octave tuning band. The unloaded quality factor of the filter cavities range from 340-550. The filter has an output intercept point greater than +54 dBm and can handle power levels of +26 dBm.

Keywords

UHF filters; cavity resonator filters; piezoelectric actuators; UHF cavity filter; broadly tunable cavity filter; capacitively loaded cavity; four pole tunable filter; frequency 300 GHz to 700 GHz; impedance matching; input-output coupling networks; loss 0.5 dB to 0.9 dB; low loss cavity filter; piezoelectric tuning; Actuators; Cavity resonators; Coatings; Power measurement; Resonant frequency; Resonator filters; Tunable circuits and devices; UHF circuits; cavity resonators; microwave filters; piezoelectric transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium (IMS), 2015 IEEE MTT-S International

Conference_Location

Phoenix, AZ

Type

conf

DOI

10.1109/MWSYM.2015.7166986

Filename

7166986