Flange based on electromagnetic band gap structure and terahertz waveguide connecting piece

Abstract

The invention provides a flange based on an electromagnetic band gap structure and a terahertz waveguide connecting piece, the flange based on the electromagnetic band gap structure comprises a metal plate, the middle of the metal plate is provided with a waveguide port, the metal plate is etched with a periodic square column electromagnetic band gap structure, the square column electromagnetic band gap structure protrudes out of the surface of the metal plate, and the waveguide port is formed in the middle of the metal plate. An elliptical impedance conversion transition structure is arranged near the waveguide port; during butt joint, the waveguide port of the plane flange is aligned with the waveguide port of the flange based on the electromagnetic band gap structure, and the square column electromagnetic band gap structure faces the plane flange. A flange butt joint air gap exists between the plane flange and the flange based on the electromagnetic band gap structure, energy in the waveguide is spread in the vertical direction, and electromagnetic leakage along the gap is restrained in the periodic square column electromagnetic band gap structure.

Description

technical field [0001] The invention belongs to the field of terahertz waveguides, in particular to a flange and a terahertz waveguide connector based on an electromagnetic bandgap structure. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Terahertz testing often uses a waveguide interface and uses standard flanges for tight connection. Fixing screws are required to ensure that there is no air gap between the flange surfaces to ensure high transmission efficiency and good standing wave characteristics. When testing the object to be tested In order to ensure the ideal docking of the waveguide port, the screws need to be removed several times, which reduces the test efficiency and greatly affects the user experience. [0004] When connecting the terahertz waveguide port, the waveguide flange has relatively high requirements for tight connec...

AI Technical Summary

Problems solved by technology

Due to the short wavelength of the high-frequency band, there is a high requirement for the precision of the connector structure, and the waveguide flange connection needs to be fixed manually, and there are often gaps between the waveguide ports due to loose fixation, causing electromagnetic leakage and increasing transmission loss. Affects the integrity of signal transmission

This phenomenon is especially obvious in the terahertz high-frequency band, which increases the test error and reduces the test efficiency, which cannot meet the requirements of high-precision and fast testing.

Images