国际电话和电报公司已研制并测试了用锁相环产生雷达频率的激励器。其性能在许多方面优于用标准的直接法合成器方式的激励器。除了不太复杂以外,还证明了对不同系统改变频段锁相环法更加有效。这种方法还增加了雷达频率发生的途径。研制的基本激励器工作在 L 波段,覆盖1.2～1.4GHz,并通过附加一个 S 波段合成器和上变频器扩展到3.1～3.6GHz。对1毫秒采样时间,在 L 和 S 波段测得短期频率稳定度≤3×10~(-10).在500MHz 的带宽上已达到250KHz 的频率捷变间隔,对任何频率捷变相位误差在0.1°以内时总的稳定时间<60μs。激励器完全用厚、薄膜混合技术和微波集成电路技术来制造。结果改善了性能,增加了平均故障间隔时间,并碱小了尺寸、重量和电源功率。技术词汇(对信息检索)合成器。锁相环,雷达激励器,厚膜基片,雷达改善因子 International Telegraph and Telephone Corporation has developed and tested an exciter that uses a phase-locked loop to generate the radar frequency. Its performance is superior in many ways to the exciters using standard direct synthesizers. In addition to being less complicated, it has also proved more effective to change the frequency band PLL method for different systems. This method also increases the frequency of radar frequency. The basic driver developed works in the L-band, covering 1.2 to 1.4 GHz and is extended to 3.1 to 3.6 GHz with the addition of an S-band synthesizer and upconverter. For 1 ms sampling time, the short-term frequency stability measured in the L and S bands is ≤3 × 10 ~ (-10). The frequency agility interval of 250 KHz has been reached over a bandwidth of 500 MHz and the phase error for any frequency agility is between 0.1 The total settling time is less than 60μs. The exciter is made entirely of thick, thin film hybrid technology and microwave integrated circuit technology. The result is improved performance, increased MTBF, and reduced base size, weight, and power supply. Technical vocabulary (for information retrieval) Synthesizer. Phase Locked Loop, Radar Exciter, Thick Film Substrate, Radar Improvement Factor