An Equal/Unequal Power Divider in Various Types and control patterns
碩士 === 大葉大學 === 電機工程學系碩士班 === 91 === In this paper, it was discussed the vertical control that design the uniform distribution and the cosecant square distribution. Because the Base Station Antenna to set up in a multi-story building, that down title 6 degree increase communication qualit...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2003
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| Online Access: | http://ndltd.ncl.edu.tw/handle/02208366507613438390 |
| Summary: | 碩士 === 大葉大學 === 電機工程學系碩士班 === 91 === In this paper, it was discussed the vertical control that design the uniform distribution and the cosecant square distribution.
Because the Base Station Antenna to set up in a multi-story building, that down title 6 degree increase communication quality.
Cosecant square patterns have as low a level as possible toward the interference zone where the same frequency is used and, conversely, have as high a level as possible toward the service zone.
In the virtual those using a Wilkinson power divider (WPD) and an Unequal power divider (UPD). The result of operate frequency range is from 1.7GHz through 2.2GHz in the WPD for s11 to be small than -10dB and the isolation to be small than -20dB. In the UPD for s11 to be small -10dB and amplitude and phase all conform to the cosecant square patterns and down title 6 degree.
The purpose of first case is attention in high isolation for WPD.
The second case is emphasized in cosecant square patterns and
down tilted 6 degree for UPD.
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