Title :
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
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; Ba1-xSrxTiO3; 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;
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2013 SBMO/IEEE MTT-S International
Conference_Location :
Rio de Janeiro
DOI :
10.1109/IMOC.2013.6646424
