Microwave high-isolation-degree multi-path cavity power divider

Abstract

The invention provides a microwave high-isolation-degree multi-path cavity power divider; electromagnetic energy is fed into a power division cavity through a coaxial port, and impedance matching is realized through stepped cylinders of different heights in the cavity, and the energy is output through a power division output port after mode conversion. An imbalanced energy signal is introduced into an isolation circuit by a microstrip line nested on an inner conductor at the input port of the power division cavity, and the high isolation characteristic between all the input ports is achieved through isolation resistor absorption. The power divider has the advantages of compact structure, simplicity in machining and assembly, high power division / synthesis efficiency, high isolation degree,high power division / synthesis power and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication systems and technologies, and relates to a microwave high-isolation multi-channel cavity power divider. Background technique [0002] At present, military or civilian wireless communication systems and microwave systems such as satellite navigation, deep space exploration, remote sensing detection, electronic reconnaissance, electronic countermeasures, and new-generation communication technologies all place high requirements on the signal power and number of channels of the system. Using power splitters with high isolation to realize redundant design and high-power design of system active components is an important method to realize high-performance systems. However, most of the current high-power solutions are based on electric vacuum devices, such as microwave klystron amplifiers and traveling wave tube amplifiers. Although such devices can achieve high output power, their operating voltage...

AI Technical Summary

Problems solved by technology

[0003] Although the power distribution / synthesis technology has been developed for decades, various synthesis technologies and structures are emerging, but the current various synthesis schemes have relatively large limitations, such as large volume and low power capacity.

The typical multi-channel power division based on the waveguide structure, although the power division / combination efficiency is high, and the power of the power division is large, but the volume is often huge, and it is difficult to achieve isolation between the input ports

Some multi-channel power splitters based on the magic T structure are complicated to process and assemble, and need to make a special matching load, which is inconvenient in practical applications

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