某机载雷达本振参考源相位噪声试验  

Phase Noise Experiment of Local Oscillator in an Airborne Radar

作　　者：雷鸣[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《电子机械工程》2015年第4期12-14,19,共4页Electro-Mechanical Engineering

摘　　要：飞机作战环境的复杂化和作战性能的提升,对机载电子装备环境适应性的要求越来越高。某本振参考源在进行功能试验时,其相位噪声不符合指标要求。文中通过试验对该问题进行了详细分析。对试验结果进行的对比发现,相位噪声的恶化与晶体振荡器本身及其连接线缆的振动无关,而是因为安装夹具和振动台扩展台设计得不合理。文中对安装夹具和振动台进行了改进。改进后的测试结果表明,相位噪声达到了指标要求,该改进措施有效。With complication of battle environment and improvement of operational performance,environmental adaptability requirement of the airborne electronic equipment is increasing.The phase noise of a local oscillator can′t meet the requirement in the function test.This problem is analyzed in detail by test in this paper.Comparison of the test results shows that the phase noise degradation has nothing to do with vibration of the crystal oscillator itself and its connecting cables.Instead,it results from the unreasonable design of the fixture and the extended table of the vibration table.The design of the fixture and the extended table is also improved in this paper.The test results after improvement show that the phase noise of the local oscillator meets the requirement and the improvement is effective.

关 键 词：本地振荡器 相位噪声 晶体振荡器 功能试验 

分 类 号：TN752[电子电信—电路与系统]