Design of Coupled-Line Type Power Dividers for Isolation Bandwidth Improvement

• Main Authors: Chen, Jian-Dong, 陳健東
• Other Authors: Chen, Chih-Jung
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/434hgz

碩士 === 國立臺灣海洋大學 === 通訊與導航工程學系 === 105 === In this thesis, we present a new concept to design three power dividers with wideband filtering response. First circuit utilizes the coupling characteristics of the coupled-line to achieve a filtering response and uses a quarter-wavelength transmission line to achieve impedance matching. It improves the problem of isolation in the traditional Wilkinson power dividers .The second circuit is improved from the first circuit, it uses impedance mismatch to avoid using quarter-wavelength transmission lines to reduce circuit area. The third circuit uses impedance mismatch to produce a frequency response similar to the Chebyshev filter. The measurement results agree well with the simulations.