Novel double-band input coupler for gyroklystron and gyro-TWT
Xiaoyan Wang,
Dongping Gao,
Yong Wang,
Fengzhen Zhang
Affiliations
Xiaoyan Wang
Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies, Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100190, China
Dongping Gao
Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies, Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100190, China
Yong Wang
Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies, Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100190, China
Fengzhen Zhang
Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies, Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100190, China
A novel input coupler that can operate in two different frequency bands separately is proposed in this paper. The dual-band (X/Ku) signals are input by two rectangular waveguides, respectively, in particular, a Bragg reflector is inserted in one of the rectangular waveguides to avoid the electromagnetic backflow, and then the circular TE01/TE02 modes are excited in the cylindrical cavity by field diffraction through the coupling holes with the help of a coaxial cavity. The simulation results show that dual-band input couplers for both dual-band gyroklystron and gyrotron traveling wave tube obtain excellent performance, laying the foundation for the development of the dual-band gyro-amplifier.
