Studies of Very-Small-Size Mobile Communication Antennas

• Main Authors: Yun-wen Chi, 郗韻文
• Other Authors: Kin-Lu Wong
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/62852s

博士 === 國立中山大學 === 電機工程學系研究所 === 97 === In this dissertation, the study mainly focuses on small-size multiband mobile phone antennas for practical applications. Loop antenna is chosen to be the antenna type for designing the compact internal multiband antenna. Four antenna designs are presented, including “Compact Multiband Folded Loop Chip Antenna for Small-Size Mobile Phone”, “Very-Small-Size Folded Loop Antenna with a Band-Stop Matching Circuit for Penta-Band Mobile Phone Application”, “Very-Small-Size Printed Loop Antenna for GSMDCSPCSUMTS Operation”, and “Printed Loop Mobile Phone Antenna with an Internal Printed Matching Circuit”. The first two antenna designs occupy a volume of 1.0 cm3 and 0.6 cm3 respectively and the last two antenna designs are to be directly printed on the system circuit board of the mobile phone. Either of them can operate as a quad-band antenna for GSM/DCS/PCS/UMTS operation or as a penta-band antenna for GSM850/900/1800/1900/UMTS operation.