| 摘要 |
A high-frequency vehicle patch antenna such as for GPS or cellular communication systems is mounted close to the conductive roof panel on an interior surface of the vehicle windshield or backglass. Low impedance coupling to the roof panel is employed to alter the focus and gain characteristics of the antenna such that maximum antenna gain is more closely aligned to zenith, and gain improvements in the general direction over the roof panel and improved omni-directionality result.
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