Microwave resonator and filter tuning by an ultrasonic piezo motor in a phased locked loop

Author

Robben, D. ; Peik, S.F.

Author_Institution

Bremen Univ. of Appl. Sci., Bremen, Germany

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

Abstract

This paper presents a technique for tuning resonators and filters using an ultrasonic piezo linear motor, a feedback oscillator, and a PLL-circuit. The concept allows an exact reconfiguration of filters even when installed and operating inside the communication system. The potential applications for tunable RF-filters and oscillators are discussed. An exemplary system is developed and tested for a resonator center frequency of 1.1 GHz with a tuning range of approximately 100 MHz. The used resonator is a loaded cavity, which is variable in its resonance frequency by a movable dielectric plate.

Keywords

UHF resonators; feedback oscillators; linear motors; microwave filters; microwave resonators; phase locked loops; ultrasonic motors; PLL-circuit; feedback oscillator; filter tuning; frequency 1.1 GHz; loaded cavity resonator; microwave resonator tuning; movable dielectric plate; phased locked loop-circuit; resonance frequency; tunable RF-fllter; ultrasonic piezolinear motor; Frequency measurement; Frequency synthesizers; Microwave filters; Microwave oscillators; Resonant frequency; Tuning; Microwave filters; piezoelectric actuators; resonator filters; tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972858

Filename

5972858