CAVITY-TYPE PHASE SHIFTER

摘要

Disclosed is a cavity-type phase shifter, comprising an integrally formed cavity body, a feed network arranged within the cavity body, a dielectric element arranged between the feed network and the cavity body, and at least one transmission line conversion device. The at least one transmission line conversion device is welded and fixedly connected to the cavity body, is used for connecting the cavity body and an outer conductor of a transmission cable, and enables an inner conductor of the transmission cable to penetrate into a cavity of the cavity body and connect to the feed network. Linear motion is produced by the dielectric element being subject to a force along the longitudinal direction of the cavity body, thereby achieving phase shifting. The present phase shifter is split into two parts, the integrally formed cavity body and the transmission line conversion device, thereby reducing design and processing difficulty requirements. The present phase shifter does not need to be connected by fixing devices such as screws, thereby avoiding the hazards of reliability problems and intermodulation problems caused by screw failure.