Planar Quasi-interdigital Cross-coupled Filter

• Main Authors: Pei-Hsuan Tsai, 蔡沛軒
• Other Authors: Chi-Yang Chang
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/17749565822209439031

碩士 === 國立交通大學 === 電信工程系 === 88 === In this report, miniature bandpass filters with planar structure and low dielectric constant subtrate are constructed by using a simple and time-saving method. This kind of filters are suitable for the usage in Hyper LAN 5.3GHz and WLAN 5.7GHz. A trisection and a coupled quadruplet bandpass filters, exhibiting electric or magnetic cross coupling, with generalized Chebyshev function response are introduced. Furthermore, design procedures and equations of both types of filters are developed. Two filter designs of this type are described to verify the accuracy and reliability of synthesis theory. The filters are seen to have very steep skirt because of allowing an attenuation pole of finite frequency on either the high side or the low side of the stopband.