通信系统用5千瓦、Ku波段行波管的研制

• 作 者: John P.Vaszari 付克信
• 出 处: 电子管技术
• 发表日期: 2004年期
• 关键词: 行波管 Ku波段 收集极 通信系统 耦合腔 千兆赫 输出功率 功率管 线路设计 电子注

本文叙述一种通信地面站终端放大用5千瓦、Ku波段耦合腔行波管的研制。这只称为870H的高功率管已由休斯公司电子动力部在内部制定的计划中研制出来。870H采用整装式线包聚焦、调制阳极电子枪、液冷和降压收集极。该管在14.0千兆赫至14.5千兆赫的带宽内给出5千瓦平坦的饱和输出功率和通信系统所要求的低失真特性。在整个500兆赫的带宽内,增益变化的最大值小于1分贝。这些性能是通过专门的线路设计技术和外部均衡器来达到的。

This paper describes the development of a ground terminal station for amplification of 5 kW, Ku-band coupled cavity TWT. This high-power tube, known only as the 870H, was developed internally by Hughes' Electronics Division. The 870H features a packaged line focus, modulated anode gun, liquid-cooled and step-down collector. The tube gives a flat 5 kW flat output power and low distortion characteristics required by the communications system in the bandwidth of 14.0 GHz to 14.5 GHz. The maximum gain variation is less than 1 dB over the entire 500 MHz bandwidth. These properties are achieved through specialized line design techniques and external equalizers.