Design of Filtering Power Dividers with Improved Isolation Performance

• Main Authors: You-Ruei, Li, 李宥叡
• Other Authors: Shih-Fong, Chao
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/37462882554006800881

碩士 === 國立高雄海洋科技大學 === 微電子工程研究所 === 102 === A new method was proposed to realize filtering power dividers with improved isolation performance in this thesis. Two types of filtering power dividers were designed in this thesis. The first circuit is a dual-band filtering power divider, which uses stepped-impedance dual-band filters to replace the quarter-wavelength transmission line with characteristic impedance of √2Z0 in a Wilkinson power divider. Especially, parallel open and short stubs are added in isolation resistor network to improve the isolation performance. The second circuit is a tunable filtering power divider. Varactor diodes are added in the filtering power divider to adjust the center frequency by applying different bias voltages. The measurement results agree well with the simulations.