更高流强、更大功率是加速器的发展趋势,这对加速器射频系统提出了更高的技术要求。移相器是其中一种使用广泛的微波元件,目前常见类型主要适用于低功率情形。为满足大功率加速器的需求,本文开展了一种高功率移相器的研制工作。移相器工作频率为975 MHz,主要结构包括弯波导、3分贝桥和可移动短路活塞,采用改变传 Higher flow and higher power is the accelerator trend, which put forward higher technical requirements for RF accelerator system. Phase shifters are one of the most widely used microwave components and currently common types are mainly suitable for low power situations. To meet the needs of high-power accelerators, this paper developed a high-power phase shifter work. Phase shifter operating frequency of 975 MHz, the main structure, including curved waveguide, 3 dB bridge and movable short-circuit piston