公开(公告)号：US20230135564A1

公开(公告)日：2023-05-04

申请号：US17974678

申请日：2022-10-27

Applicant: JEOL Ltd.

Inventor： Kenichi Hachitani ,  Nobuaki Nemoto ,  Junpei Hamatsu ,  Fumihiro Yamazaki ,  Takayuki Suzuki

IPC: G01R33/46

Abstract: In a frequency converter, a transmission signal having a first frequency component and a second frequency component is multiplied by a local signal, to thereby frequency-convert the transmission signal. In a power amplifier, the frequency-converted transmission signal is amplified. A demultiplexing circuit generates a first transmission signal and a second transmission signal from the amplified transmission signal. A controller is configured to set for a transmission section a frequency set suitable for two irradiation frequencies.