Fixed standing-wave ratio (SWR) mismatch load

Abstract

The invention discloses a fixed standing-wave ratio (SWR) mismatch load, including outer conductors, inner conductor, a microstrip sheet and an end cap, the outer conductor is a tubular part, the inner conductor is mounted and fixed in the inner hole of the outer conductor, the rear end of the inner conductor is provided with a blind hole, the blind hole is adapted to the front end of the pin, theend cap is detachably connected with the outer conductor, the substrate of the microstrip sheet is an alumina ceramic substrate, the alumina ceramic substrate is coated with a thin film resistor. Theinvention has the advantages that mismatched loads with different standing wave ratios can be obtained by changing the square resistance of the thin film resistor, the working frequency range of themismatched loads can reach DC - 50GHz, and the standing wave flatness of the mismatched loads is higher than that of the prior art. The size of the structure is small, and the length is reduced by about half compared with the mismatch load using the column resistor, which greatly reduces the size of the structure. In addition, the adjusting screw can be not used or used for debugging, so that thedebugging is easier.

Description

technical field [0001] The invention belongs to the technical field of wireless communication equipment, and in particular relates to a fixed standing wave ratio mismatch load. Background technique [0002] In RF systems, a fixed VSWR mismatch load can produce a fixed reflection coefficient, simulating the specific reflection conditions of the antenna or end system. The fixed VSWR mismatch load can be used for the performance test of devices such as transmitters and power amplifiers in the mismatch state, and can also be used for the overall verification of various reflectometer systems and impedance test systems. Commonly used fixed VSWR mismatch loads have VSWRs of 1.10, 1.20, 1.50, 2.00, 3.00, etc. [0003] The existing fixed standing wave ratio mismatched load adopts the scheme of connecting columnar resistors and inner conductors. By selecting columnar resistors with different resistance values, mismatched loads with different standing wave ratios are realized. The str...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of the existing fixed VSWR mismatch load in the prior art with large structural size, inconvenient use, difficult debugging and low production efficiency, a fixed VSWR mismatch load is provided.

Images