High-power corner cut filter with square cavity

Abstract

The invention relates to a high-power corner cut filter with a square cavity, and the filter provided by the invention comprises an upper radiating fin, a side radiating fin, a radiating fin fixing clamp, an upper half cavity, a lower half cavity, a lower radiating fin, a bracket, a frequency tuning screw and a coupling tuning screw. The high-power corner cut filter provided by the invention is used for a communication system, can be independently used as one component to take a filtering action on signals within a certain frequency range and can be combined as the channel filter of a multiplexer to form a multiplexer network, thereby realizing the success application of the tuning cavity TE011 model of the filter and obviously improving the power capacity of the filter; and the filter has high quality factors. In the filter provided by the invention, a U-shaped window and a rectangular window are skillfully designed to achieve a negative-coupling structure, thereby reducing the possibility of the low air pressure discharge and micro-discharge of the filter and guaranteeing the symmetrical transmission characteristics of the filter; and the filter is easy to debug. The whole filter provided by the invention is in a plane configuration structure, can achieve heat radiation preferably and can be provided with an external temperature compensating device, thereby guaranteeing the temperature stability of the filter.

Description

technical field [0001] The invention relates to a high-power angle-cut square cavity filter, which belongs to the field of microwave filters. Background technique [0002] In satellite communication systems, cavity filters are indispensable passive components. It can be used alone as a component to filter signals in a certain frequency band, and can also be combined as a channel filter of a multiplexer to form a multiplexer network. With the continuous increase of the communication capacity of communication satellites, the requirements for the power, quality and volume of cavity filters are also getting higher and higher. [0003] At present, the cavity filters commonly used internationally and domestically include rectangular waveguide diaphragm filters, Invar thin-walled circular cavity dual-mode filters, etc. The former is generally used for broadband filters, and its Q value (that is, the quality factor of the filter, which measures the filter quality factor) The key p...

AI Technical Summary

Problems solved by technology

Because the circular cavity dual-mode filter contains two modes in one resonant cavity, the heat generation is large and the resonator of the circular waveguide cavity has poor heat dissipation performance, which limits the power capacity. At present, the power capacity of 150W in the Ku frequency band has become Invar's thin-walled circular cavity The limit of dual-mode filters, in the occasions that require high Q value and high power, the existing technology can no longer meet the demand

Images