Efficient low-loss broadband waveguide-microstrip conversion device

Abstract

Disclosed is an efficient low-loss broadband waveguide-microstrip conversion device. The conversion device comprises a tail feed ladder (1), a shell body (3), a glass insulator (6) and tuning screws (7); the tail feed ladder (1) is installed on the inner wall of a waveguide cavity (2) of the shell body (3), and a cross slot elastic interface (4) in the side surface is connected with the glass insulator (6); a pin (5) at one end of the glass insulator (6) is inserted into a cross slot in the end portion of the cross slot elastic interface (4), and the other end of the glass insulator (6) is connected with a circuit at the rear end; each tuning screw (7) is inserted from the side wall of the waveguide cavity (2) and is opposite to the step surface of the tail feed ladder (1). The conversiondevice overcomes the limitation of a traditional waveguide-microstrip conversion technology, a good standing-wave ratio, ground insertion loss and broadband response are obtained, the technical processing procedures are simplified, and good consistency is achieved at the same time.

Description

technical field [0001] The invention relates to a broadband waveguide-microstrip conversion device, which belongs to the field of communication radar. Background technique [0002] With the development of millimeter-wave integrated circuits, many application systems put forward the requirement of waveguide-to-microstrip conversion integrated with microstrip integrated circuits. Various indicators of waveguide microstrip conversion, such as standing wave ratio, insertion loss and response frequency width, directly affect the performance of the entire system, and its design and processing difficulty directly determines the possibility of process production. Therefore, the development of this technology has increasingly become the focus of attention. [0003] So far, there are three main methods of waveguide microstrip conversion: fin line conversion, ridge waveguide conversion, and probe conversion. [0004] Ridge-waveguide switching is a simple method with good transition c...

AI Technical Summary

Problems solved by technology

The probe conversion method has low insertion loss, small return loss, wide response bandwidth and compact structure, convenient processing, easy assembly and disassembly, and is a commonly used high-quality conversion method, but it needs to use multiple temperature gradients in the process of processing Welding, poor consistency, this shortcoming restricts mass production and will greatly reduce the qualified rate of finished products

[0007] In summary, the existing technology has disadvantages such as high cost, difficult processing, poor consistency, etc.

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