| In recent years, with the high speed development of microwave and millimeterwave systems, the system’s output power put forward higher requirements, as well assolid-state power amplifier parts gradually replaced vacuum devices increasingly widerange of applications in the millimeter-wave power combiner, the development ofefficient high-power solid-state amplifiers can greatly improve the working ability ofthe millimeter-wave systems.This paper studies the Ka-band millimeter-wave solid-state spatial powercombining technology, based on the study of the the waveguide branch of the bridge,and the synthesis of the characteristics of each of the binary tree and chain power, thefocus of several multi-way power combiner network, and by analyzing the powersynthetic network amplitude and phase inconsistencies on the impact of the powercombining efficiency, designed several branch waveguide bridge-based Ka-bandthree-way power combiner network, Ka band five-way power combining network andKa-band10-way power combining amplifier.The key to the high-power combine amplifier with high combiner efficiency powercombiner network must have low loss, high amplitude and phase consistency, so thiswas the basis of theoretical analysis and simulation software in several three and fivepower combiner network on the processing and test a three-way power combiner and afive-power combiner. The analysis revealed that based on the branch waveguide bridgethe five-way power combiner and double probe transition of waveguide-microstrippower combiner network with low-loss, high-amplitude and phase consistencyadvantages, and the difficulty of processing. On this basis, based on the branchwaveguide bridge the five-way power combiner and double probe transition ofwaveguide-microstrip power combiner network produced a Ka-band power combineramplifier. The test results show that the combiner efficiency of10-way combiner poweramplifier higher than70%in the29-31GHz band at30GHz to achieve the highestcombiner efficiency of85%. |
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