Miniaturization of DVB-H Handset Antennas

• Main Author: 許志瑋
• Other Authors: 唐震寰
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/ke9932

碩士 === 國立交通大學 === 電信工程系所 === 95 === Broadband, size reduction, radiation pattern, and antenna gain are the major issues to be considered. It is well-known that these issues are trade-offs one another. In the thesis, by applying half-bow-tie monopole antenna and x to the power of N curved line structure, two antenna prototypes for DVB-H are proposed. With the help of ground plane surrounding the antenna, a half-bow-tie monopole antenna is proposed to increase the bandwidth. To broaden bandwidth, boundaries of No.1 antenna are changed and become a curved line. The curved line is described by a x to the power of N. The simulated and measured results confirmed that the proposed antenna can operates at 470 MHz to 800 MHz bands. The antenna not only has a simple planar structure but also yields the smallest antenna area. Moreover, the antenna has a nearly omni-directional radiation pattern and a reasonable peak gain of 2.25 dBi to 3.74 dBi.