Quasi-planar high-isolation multi-path power divider

Abstract

The invention relates to a quasi-planar high-isolation multi-path power divider. An input radio-frequency signal is subjected to multi-path power allocating and input impedance matching through an upper-level power dividing network. Meanwhile, the insulating characteristics and the output VSWR at all output ports are ensured to be excellent through a lower-level isolating network and an isolation resistor. The upper-level power dividing network and the lower-level isolating network are connected via metallized through holes. According to the technical scheme of the invention, the advantages of a quasi-planar structure, including multiple ports, high isolation, low insertion loss, good input/output standing wave ratio, wide band, small volume, good consistency of signal amplitudes/phases at all output ports, and the like, are realized. Meanwhile, the quasi-planar high-isolation multi-path power divider is convenient to design and the infinite multi-path power distribution can be realized theoretically. The quasi-planar high-isolation multi-path power divider is mainly applied to microwave and millimeter wave power synthesis and amplification systems, phased array antenna feed networks and the like. The quasi-planar high-isolation multi-path power divider has a wide application prospect in the fields of microwave and millimeter wave systems for communication, radar, measurement, control and the like.

Description

technical field [0001] The invention relates to a novel quasi-planar high-isolation multi-channel power divider adopting a double-layer substrate. Background technique [0002] The power divider is the key component of the power combining amplifier and the phased array antenna feeding system, which directly determines the quality of the system performance index. With the rapid development of military and civil communication systems, the demand for broadband, high-efficiency high-power amplifiers and the feed network with characteristics of broadband, high isolation, planarization, and low insertion loss in phased array antennas are increasing day by day. This requires broadband, high efficiency, low loss, planar, high isolation multi-channel power splitter / combiner. Traditional multi-channel power splitters are mainly realized by three-dimensional circuits (such as multi-channel waveguide cavity power splitters), which are large in size, high in cost, and difficult to integ...

AI Technical Summary

Problems solved by technology

Traditional multi-channel power splitters are mainly realized by three-dimensional circuits (such as multi-channel waveguide cavity power splitters), which are large in size, high in cost, and difficult to integrate; at the same time, it is often difficult to achieve power distribution between output ports while realizing N-way power distribution. good isolation properties

On the other hand, although the traditional binary power divider can achieve better isolation characteristics, it has the problems of large size and high loss

Images