Reduced size tunable power splitter implemented with ferroelectric parallel plate capacitor

Author

Paul, Manoranjan ; Kalkur, T.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Colorado, Colorado Springs, CO, USA

fYear

2013

fDate

4-7 Aug. 2013

Firstpage

1

Lastpage

5

Abstract

Tunable lumped power splitter based on tunable parallel ferroelectric capacitor is proposed. The ferroelectric BST(barium strontium titanate) capacitor is fabricated on a sapphire substrate. The capacitance of this device has a tunability of 50% for an applied voltage of 5V. The performance of the power splitter is simulated with Agilent Technology ADS software tool. The lumped power splitter is fabricated on an FR-4 RF bread-board with discrete chip inductors and tunable capacitors. The maximum return loss frequency(notch frequency) of the power splitter can be tuned from 369 MHz to 626 MHz by applying a DC bias of 5V. Unlike p-n junction based power splitter, the tuning is independent of the polarity of the applied bias.

Keywords

barium compounds; capacitance; circuit tuning; ferroelectric capacitors; inductors; lumped parameter networks; power dividers; strontium compounds; Agilent Technology ADS software tool; Al₂O₃; Ba_1-xSr_xTiO₃; FR-4 RF bread board; capacitance; discrete chip inductors; ferroelectric BST capacitor; ferroelectric parallel plate capacitor; maximum return loss frequency; notch frequency; reduced size tunable power splitter; sapphire substrate; tunable lumped power splitter; tunable parallel ferroelectric capacitor; tuning; voltage 5 V; Capacitance; Capacitors; Frequency measurement; Loss measurement; Ports (Computers); Power measurement; Radio frequency; BST; Ferroelectrics; power splitter;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave & Optoelectronics Conference (IMOC), 2013 SBMO/IEEE MTT-S International

Conference_Location

Rio de Janeiro

Type

conf

DOI

10.1109/IMOC.2013.6646424

Filename

6646424