Ceramic power divider with strip line-coplanar waveguide transition structure

Abstract

The invention discloses a ceramic power divider with a strip line coplanar waveguide transition structure in the field of microwave functional devices. The ceramic power divider comprises a body mainly composed of a plurality of dielectric plates, and an input port, a first output port and a second output port of a coplanar waveguide structure are arranged on the two sides of the body. The upper surface of the top dielectric plate and the lower surface of the bottom dielectric plate are respectively provided with first metal layers, and the upper surfaces of the two dielectric plates distributed up and down in the middle are respectively provided with second metal layers; a main body of a circuit of the body is of a strip line structure, the metal conduction band and the two second metal layers form a coplanar waveguide (CPW) structure at the positions of the input port, the first output port and the second output port, and the metal conduction band and the two first metal layers forma strip line structure at the middle position of the circuit. The power divider body adopts a strip line structure, is small in radiation loss and free of dispersion in transmission, has coplanar waveguide input and output forms, and is convenient to integrate with a system.

Description

technical field [0001] The invention relates to the field of microwave functional devices, in particular to a ceramic power divider with a stripline-coplanar waveguide transition structure. Background technique [0002] The power divider is an important passive device in the microwave system circuit. Its function is to realize the power distribution from one signal to multiple signals or to realize the power combination from multiple signals to one signal. An excellent power divider should have low in-band loss, wide operating bandwidth, good phase and amplitude balance between output signals, and high isolation between output signals, and also need to have as small a volume as possible. [0003] Common power divider implementation forms include microstrip line, stripline and transmission line transformer, etc. The microstrip line power divider is easy to integrate with the system, but the plane area is large, and the air medium with a certain thickness must be placed above ...

AI Technical Summary

Problems solved by technology

[0003] Common power divider implementation forms include microstrip line, stripline and transmission line transformer, etc. The microstrip line power divider is easy to integrate with the system, but the plane area is large, and the air medium with a certain thickness must be placed above the microstrip line. It is difficult to reduce the thickness direction, and because there is a large difference in the dielectric constant of the upper and lower dielectrics of the transmission line, there is dispersion phenomenon in signal transmission; the stripline power divider avoids the dispersion of the microstrip and the problem that the thickness direction is difficult to reduce, but Its signal transmission line is located between the two layers of media and has a large area of ​​metal covering the top and bottom, making it difficult to integrate with the system

Images