通信人家园

 找回密码
 注册

只需一步,快速开始

短信验证,便捷登录

搜索
查看: 3476|回复: 5
打印

基本 [复制链接]

军衔等级:

  下士

注册:2007-11-20
跳转到指定楼层
1#
发表于 2007-12-12 08:53:00 |只看该作者 |倒序浏览
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>

举报本楼

本帖有 5 个回帖,您需要登录后才能浏览 登录 | 注册
您需要登录后才可以回帖 登录 | 注册 |

手机版|C114 ( 沪ICP备12002291号-1 )|联系我们 |网站地图  

GMT+8, 2024-11-27 05:10 , Processed in 0.406420 second(s), 16 queries , Gzip On.

Copyright © 1999-2023 C114 All Rights Reserved

Discuz Licensed

回顶部