摘要
一体化室外单元是卫星电视接收系统的重要组成部分,测量一体化室外单元时需保证测试场地的均匀性和对反射波的有效抑制。介绍了一体化室外单元远场测量系统,测试了场地中被测一体化室外单元有效体积内的电场变化量和两个正交极化的场强差值,分析了场地反射波抑制量测试数据,验证了测试场地的均匀性及对反射波的抑制效果。理论分析和测试结果表明,远场测试系统测试场地能够满足一体化室外单元的测试需求。
LNBF is an important part of satellite TV receiving system. The uniformity and effective suppression to the re-flected wave should be guaranteed while LNBF is tested. LNBF far-field measurement system is introduced in this paper. Theelectric field variable quantity and field strength difference between two orthogonal polarizations in LNBF effective volume weremeasured. The tested data of field reflected wave suppression quantity was analyzed. The field uniformity and effect of reflectedwave rejection were verified. The theoretical analysis and testing results show that the test site for far-field measurement systemcan meet the requirements of testing LNBF.
出处
《现代电子技术》
2014年第6期24-26,共3页
Modern Electronics Technique
