发明名称 |
Asymmetric dipole antenna assembly. |
摘要 |
An asymmetric dipole antenna assembly is provided for wireless communications devices, and includes separate upper and lower conductor traces and a low impedance feedpoint at the junction of the conductor traces. The upper conductor trace may include a matching network and may be printed on a planar printed circuit board mounted proximate the top of the a hand-held wireless transceiver. The upper conducting trace provides 1/4 wave resonance over a desired frequency range and a 50 ohm input impedance for the antenna. The lower conductor trace may be provided by the ground trace of the wireless device circuitry, requiring only a minimum effective trace length of 1/4 wavelength at the lowest frequency of operation. Polarization of the antenna is determined by the orientation of the longest dimension of the lower conductor. <IMAGE> <IMAGE> |
申请公布号 |
HK1034813(A1) |
申请公布日期 |
2005.06.10 |
申请号 |
HK20010105505 |
申请日期 |
2001.08.08 |
申请人 |
RANGESTAR INTERNATIONAL CORPORATION |
发明人 |
GREG JOHNSON;ROBERT HILL;DON KEILEN |
分类号 |
H01Q21/30;H01Q1/24;H01Q1/38;H01Q1/48;H01Q5/00;H01Q9/04;H01Q9/16;H01Q9/26;H01Q9/28;H01Q13/08;(IPC1-7):H01Q |
主分类号 |
H01Q21/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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