手機天線發展趨勢Dept. of Electronics & Communication Engineering Harbin Institute of Technology Harbin 150001, P.R. China E-mail: qwu@hit.edu.cn Tel. +86 451 6413502
移动通信终端天线设计 (6)
吴群
教授，工学博士
未来手机天线发展趋势
Half-Volume dielectric resonator antenna
Helsinki university of technology,Radio laboratory
Internal antenna elements for future handsets
Small internal wideband antenna elements Key issues: bandwidth efficiency size Studied elements: PIFA (shorted patch) DRA Bandwidth enhancement with coplanar and stacked multi-resonant structures Current emphasis is on dual band structures
Dual resonant stacked shorted patch antenna
A sleeve balun reduces the undesired current on the outer surface of the RF cable
The use of quarter-wave cap-like sleeve (sleeve balun) on the feed cable near the hand……
