An Improved Electromagnetic Band-gap Structure with Applications

• Main Authors: Pao-Chun Lin, 林保君
• Other Authors: Chien-Chang Huang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/48224545672247511475

碩士 === 元智大學 === 通訊工程學系 === 95 === This thesis presents an improved electromagnetic band-gap structure which has the ability of reducing the RF circuitry sizes in low loss conditions due to the larger slow wave factor and broad band-gap characteristics. Several parameter tunings on the structure dimensions for improving the energy band-gap and the slow wave factor are discussed in detail in the thesis. In the application aspects, the miniature ring hybrid is demonstrated at the first, and then the microstrip bandpass filter with wide spurious suppression for WiMAX systems using the proposed structure is examined. Finally, the basic concept utilizing the electromagnetic band-gap structure on the output matching in active devices is addressed for enhancing circuit linearities and 1 dB compression point.