Title :
BaSrTiO3-Based 30–88MHz tunable filter
Author :
Zhang, Ken ; Watson, Tom ; Cardona, Albert ; Fink, Mike
Author_Institution :
Agile RF Inc., Santa Barbara, CA, USA
Abstract :
This article presents the operation, design and performance of tunable filter bank based on Agile\´s barium strontium titanate (BST) thin film technology. A novel capacitor array has been designed utilizing a nonlinear BST capacitance model and a capacitor array "stacking" technique. Measurements demonstrate the rejection of tunable filter of > 30dB at ±27% band width, the return loss is <; 10dB over entire operating range, and the minimum third order intercept is greater than 40dBm with switching speeds <; 1ms.
Keywords :
barium compounds; capacitors; filters; thin films; BST thin film; BrSrTiO3; barium strontium titanate; capacitor array stacking technique; frequency 30 MHz to 80 MHz; nonlinear BST capacitance model; tunable filter bank; Barium; Binary search trees; Capacitance; Capacitors; Filter bank; Loss measurement; Stacking; Strontium; Titanium compounds; Transistors; BST; IIP3; nonlinear model; tunable filter; tuning speed;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5515504
