A low temperature resistant microwave ferrite circulator

Abstract

The invention relates to a low-temperature resistant microwave ferrite circulator, which includes an upper end cover and a lower end cover oppositely arranged, a first groove is arranged on the side of the upper end cover facing away from the lower end cover, and a first groove is arranged on the side facing the lower end cover. A second groove is arranged on one side, a third groove is arranged on the side of the lower end cap facing the upper end cap, and a fourth groove is arranged on the side facing away from the upper end cap, and in the first groove A first magnet is arranged, a first dielectric ring and a ferrite are arranged in the second groove, a second dielectric ring and a ferrite are arranged in the third groove, and a second dielectric ring and a ferrite are arranged in the fourth groove A fourth magnet is arranged in the slot, and an inner conductor is arranged between the first dielectric ring and the second dielectric ring. The circulator sets grooves on both sides of the end cover and places the magnet and ferrite in the grooves on both sides, and then sets the inner conductor between the two ferrites to shorten the geometric length of the output section of the inner conductor, and then Reduce device volume. By using ferrite mixed with special materials, the device can work in the extreme low temperature environment of ‑270 degrees.

Description

technical field [0001] The invention relates to a circulator, in particular to a low-temperature resistant microwave ferrite circulator. Background technique [0002] Microwave ferrite circulator is a multi-port device, the transmission of electromagnetic waves inside it circulates in one direction, while the opposite direction is isolated, or anti-rotation. The principle is to use the anisotropic characteristics of the ferrite material in the magnetic field bias. The ferrite material is used as the medium, the conduction band structure is placed on the top, and a constant magnetic field is added, so that the circulator has a looping characteristic. If the two poles of the bias magnetic field are changed, the direction of the circulator's circulation will be changed. In communication systems such as base stations, devices with unidirectional circular characteristics are required. For example, circulators are often used at the output port of a power amplifier to isolate sig...

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Problems solved by technology

[0004] The present invention provides a microwave ferrite circulator in order to overcome the situation that the existing circulator is large in size and cannot be used in a low-temperature environment. The circulator is provided with grooves on both sides of the end In the grooves on both sides, and then set the inner conductor between the two ferrites, shorten the geometric length of the output section of the inner conductor, thereby reducing the volume of the device, and use ferrite mixed with special materials, so that the device can operate at -270 It can still have better electrical indicators in the low temperature environment

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