天线垂直波瓣角的选用分析

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1、天线的垂直波瓣角的确定天线的垂直波瓣角的大小主要与下面几个因素有关：1：天线基站高度；2：周围建筑高度；3：覆盖深度；4：天线下倾角这四个因素有关。从数学角度看，设天线高度为H1，周围建筑高度为H2，高度差为h,天线下倾角为a，天线垂直波瓣角为q，覆盖半径为r,则有tg（a-q/2）=h/r的关系。现在深圳市的基站规划覆盖半径要求一般在0.5～0.75公里之间，则根据以上公式有：天线高度差h222222222覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/

2、20.19099-0.809-1.809015-2.809-3.809015-4.80901-5.80901-6.80901-7.80901垂直波瓣角β0.38197-1.618-3.61803-5.618-7.61803-9.61803-11.618-13.618-15.618天线高度差h333333332覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/20.28648-0.714-1.713523-2.7135-3.713523-4.71352-5.7

3、1352-6.71352-7.80901垂直波瓣角β0.57295-1.427-3.427047-5.427-7.427047-9.42705-11.427-13.427-15.618天线高度差h5555555520覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/20.47745-0.523-1.522546-2.5225-3.522546-4.52255-5.52255-6.52255-6.09085垂直波瓣角β0.95491-1.045-3.04509

4、2-5.0451-7.045092-9.04509-11.0451-13.0451-12.1817天线高度差h888888888覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/20.7639-0.236-1.236102-2.2361-3.236102-4.2361-5.2361-6.2361-7.2361垂直波瓣角β1.5278-0.472-2.472203-4.4722-6.472203-8.4722-10.4722-12.4722-14.4722天线

5、高度差h101010101010101010覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/20.95484-0.045-1.045159-2.0452-3.045159-4.04516-5.04516-6.04516-7.04516垂直波瓣角β1.90968-0.09-2.090317-4.0903-6.090317-8.09032-10.0903-12.0903-14.0903天线高度差h151515151515151515覆盖半径r600600600

6、600600600600600600天线下倾角α012345678垂直波瓣角β/21.43210.4321-0.567904-1.5679-2.567904-3.5679-4.5679-5.5679-6.5679垂直波瓣角β2.864190.8642-1.135808-3.1358-5.135808-7.13581-9.13581-11.1358-13.1358天线高度差h202020202020202020覆盖半径r600600600600600600600600600天线下倾角α012345678垂直波瓣角β/

7、21.909150.9092-0.090848-1.0908-2.090848-3.09085-4.09085-5.09085-6.09085垂直波瓣角β3.81831.8183-0.181695-2.1817-4.181695-6.1817-8.1817-10.1817-12.1817天线高度差h25252525252525252525覆盖半径r600600600600600600600600600600天线下倾角α0123456789垂直波瓣角β/22.385941.38590.385944-0.6141-1.

8、614056-2.61406-3.61406-4.61406-5.61406-6.614056垂直波瓣角β4.771892.77190.7718881-1.2281-3.228112-5.22811-7.22811-9.22811-11.2281-13.22811天线高度差h222222222覆盖半径r700700700700700700700700700天