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标题: 基本  [查看完整版帖子] [打印本页]
时间:  2007-12-12 08:53
作者: cylix     标题: 基本

1.5 <span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">前后比</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">(Front-Back Ratio) <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">表明了天线对后瓣抑制的好坏。选用前后比低的天线，天线的后瓣有可能产生越区覆盖，导致切换关系混乱，产生掉话。一般在</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">25</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">－</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">30dB</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">之间，应优先选用前后比为</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">30</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">的天线。</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/><br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">案例</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
        </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">常见天线参数设置</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">电性能</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">(Band 1) <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">技术参数</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
        </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">性能指标</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">增益</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Gain 16dBi <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">频率范围</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Frequency Range 870 --- 960 MHz <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">双极化</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">olarisation Dual Slant ± 45° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">端口隔离度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Isolation between ports 330 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">水平平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-3dB </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">功率角</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/>Horizontal Plane -3dB Power Beamwidth 65° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">垂直平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-3dB </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">功率角</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;"><br/>Vertical Plane -3dB Power Beamwidth <br/>8° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">水平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-10dB Power Beamwidth<br/>Horizontal Plane -10dB Power Beamwidth 125° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">阻抗</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Impedance 50 Ohm <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">回波损耗</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Return Loss 870-960 MHz 316 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">前后比</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Front to Back Ratio 325 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">端口最大输入功率</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Max Input Power per port 150 W <br/>Electrical Downtilt 1 to 10° <br/>Downtilt Setting Accuracy ± 0.5° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">电性能</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">(Band 2) <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">增益</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Gain 16dBi <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">频率范围</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Frequency Range 1710-1880 MHz <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">双极化</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">olarisation Dual Slant ± 45° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">端口隔离度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Isolation between ports 330 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">水平平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-3dB </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">功率角</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/>Horizontal Plane -3dB Power Beamwidth 65° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">垂直平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-3dB </span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">功率角</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;"><br/>Vertical Plane -3dB Power Beamwidth <br/>8° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">水平面</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">-10dB Power Beamwidth<br/>Horizontal Plane -10dB Power Beamwidth 120° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">阻抗</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Impedance 50 Ohm <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">回波损耗</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Return Loss 870-960 MHz 314 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">前后比</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Front to Back Ratio 325 dB <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">端口最大输入功率</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Max Input Power per port 125 W <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">电调下倾角度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Electrical Downtilt 1 to 10° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">电调下倾角度精确度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Downtilt Setting Accuracy ± 0.5° <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">电性能</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">(</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">一般</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">) <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">连接器类型</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Connectors Type 7/16 DIN, N optional <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">机械性能</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">
                <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">高度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Height 2258 mm <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">宽度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Width 400 mm <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">深度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Depth 139 mm <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">额定风速度</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">Rated Wind Speed 200 km/hr <br/>Thrust at Wind Speed of 160 km/hr kgf 175 <br/></span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">重量</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">(</span><span style="FONT-SIZE: 9pt; FONT-FAMILY: 宋体; mso-ascii-font-family: tahoma; mso-hansi-font-family: tahoma; mso-bidi-font-family: tahoma;">除安装机架</span><span lang="EN-US" style="FONT-SIZE: 9pt; FONT-FAMILY: tahoma;">)<br/>Weight(excluding mounting brackets) TBOutline Drawing No MK105<br/>kg</span>
时间:  2007-12-12 09:14
作者: cylix

<h6>坐下沙发~</h6>
时间:  2007-12-12 10:02
作者: icomain

luguo
时间:  2007-12-12 11:25
作者: kuaileguo

学习
时间:  2007-12-12 11:36
作者: gofay

<p>发这个什么意思</p><p>看不懂</p>
时间:  2010-7-28 10:24
作者: 硝烟灭火

不懂，先收藏了！



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