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Integrated Ferroelectrics
An International Journal
Volume 93, 2007 - Issue 1
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SESSION A: DEVICE PROGRESS INTEGRATION/RELIABILITY (FERRO-, PIEZO-, PYRO-ELECTRICS ETC.)

MATCHING NETWORKS IMPLEMENTED WITH HIGH-K CAPACITORS FOR HIGH FREQUENCY AMPLIFIERS

NASHID AFREEN Microelectronics Research Laboratory, Department of Electrical and Computer Engineering, University of Colorado at Colorado Springs, Colorado Springs, CO, 80933-7150
&
T. S. KALKUR Microelectronics Research Laboratory, Department of Electrical and Computer Engineering, University of Colorado at Colorado Springs, Colorado Springs, CO, 80933-7150
Pages 3-9 | Received 15 Jun 2007, Accepted 30 Sep 2007, Published online: 20 Sep 2010
 
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ABSTRACT

Ferroelectric capacitors in the paraelectric phase can be used to implement a wide variety of tunable radio frequency (RF) circuits. Due to their low loss, fast tuning speed, size and low cost, thin film high-K capacitor is promising technology for the development of tunable filters, active and passive filters and voltage controlled oscillators. This paper presents an electronically tunable matching network for broadband amplifier for RF applications, utilizing thin-film Barium Strontium Titanate (BST) tunable capacitors. The performance of tunable matching network implemented tunable BST capacitor was compared with that of conventional p-n junction varactor.

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