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Base station antenna system employing circular polarization and angular notch filtering
Base station antenna system employing circular polarization and angular notch filtering
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机译：采用圆极化和角陷波滤波的基站天线系统
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摘要
An antenna system for transferring wireless communication signals between a wireless communication device and a base station is provided. The system includes a first linear polarization antenna associated with a first signal, and a second linear polarization antenna associated with a second signal and oriented perpendicularly to the first antenna. The first and second antennas are coupled to a phase shifter through first and second signal attenuators configured to selectively attenuate the first and second signals, respectively. The phase shifter is also coupled with the base station, and is configured to delay the phase of the first signal by ninety degrees. In addition, an attenuator controller coupled with the first and second attenuators is configured to control when the first and second signal attenuators attenuate the first and second signals.
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