Millimeter wave parallel-type waveguide coaxial conversion device

Abstract

The invention relates to a waveguide coaxial conversion device, in particular to a millimeter wave parallel-type waveguide coaxial conversion device. The millimeter wave parallel-type waveguide coaxial conversion device comprises a coaxial connector, an inner conductor and a waveguide cavity, wherein a cylindrical hollow cavity which penetrates through two ends of the waveguide cavity is arranged in the waveguide cavity; multiple stages of steps are arranged on one inner side surface of the waveguide cavity; the step crossing the central axis of the hollow cavity is provided with a through hole along the direction of the central axis; one end of the inner conductor is fixedly arranged in the coaxial connector and the other end is arranged in the through hole in the waveguide cavity; and the inner conductor is not in contact with the inner wall of the through hole. The millimeter wave parallel-type waveguide coaxial conversion device provided by the invention is small in influence of environmental factors, small in influence on the standing-wave ratio and good in usability, does not need to take measures to prevent excessive graphite dust from remaining in the waveguide cavity and can be normally used in a complicated environment.

Description

technical field [0001] The invention relates to a waveguide coaxial conversion device, in particular to a millimeter wave parallel waveguide coaxial conversion device. Background technique [0002] The millimeter-wave waveguide coaxial conversion device is a microwave device that is widely used in the millimeter-wave frequency band. It has a large number of applications from the testing of millimeter-wave devices to millimeter-wave solid-state phased array antennas. The electrical index to measure the waveguide coaxial conversion device is mainly the voltage standing wave ratio (VSWR) of the port, referred to as the VSWR. The quality of the VSWR directly affects the test accuracy of the device under test or the working efficiency of the phased array antenna. . [0003] The millimeter wave waveguide coaxial conversion device is divided into millimeter wave vertical waveguide coaxial conversion device and millimeter wave parallel waveguide coaxial conversion device according ...

AI Technical Summary

Problems solved by technology

The two methods have their own advantages and disadvantages. The welding method makes the connection between the two solid and reliable, and is less affected by environmental factors. However, due to the short working wavelength, the position of the welding point between the inner conductor of the coaxial joint and the waveguide has a greater impact on the standing wave ratio. Large, affecting performance

The method of wrapping with graphite is simple and feasible, but measures need to be taken to prevent excess graphite dust from remaining in the waveguide cavity. At the same time, in a high-speed vibration environment, the graphite in the cavity may splash out and form debris, causing greater harm.

Images