WHIP DUAL-BAND ANTENNA
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United States of America Patent
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app pub date -
Mar 24, 2010
filing date -
Mar 24, 2010
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Abstract
A whip dual-band antenna is disclosed in the present invention, and includes a radiator which is connected with a radio via a feed point of the radio, wherein the radiator includes a linear first radiator for generating a first resonance, a helical second radiator is set on the top of the first radiator in an inverse series manner, and the second radiator is used for generating a second resonance whose frequency is higher than the resonance frequency of the first radiator. In the present invention, by adding additionally a second radiator with a higher resonance frequency on the top of a first radiator dexterously, the length of the model of the second resonance frequency is increased, and the effect of the change of the UltraHigh Frequency (UHF) band is decreased. The antenna performance is better concentrated on the upper hemisphere when the dual-band antenna is operating in the Global Positioning System (GPS) frequency band, so as to implement a better GPS gain performance without affecting the effect in the UHF band.
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