移动通信终端天线设计5Dept. 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 (5) 吴群 教授，工学博士 Specially-designed antenna Planar Antennas Wire Antennas Build-in Antennas Dual Band Antennas GSM/DCS Ceramic Internal Internal antenna Ceramic low cost dielectric Relatively independent in Impedance Dual band GSM/DCS Overall dimensions: 35 x 35 x 3 mm Weight: 11 grams -2 dBi GSM & -4 dBi DCS -45°C to + 125°C UL94VO Tri-Band Antennas GSM/DCS/GSM Flat Tri-Band Position in phone Tri-band GSM, DCS, GSM 2 spring contacts on antenna No matching Overall dimensions: 30 x 30 x 2 mm - Weight: Electrical diagram Antenna element DCS Chock Antenna DCS element portion GSM ……