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Related Experiment Video

Updated: Apr 25, 2026

How to Ignite an Atmospheric Pressure Microwave Plasma Torch without Any Additional Igniters

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A compact two-way high-power microwave combiner.

C Chang¹, J Sun¹, Z F Xiong¹

¹Science and Technology of High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China.

The Review of Scientific Instruments

|September 1, 2014

Summary

A new compact 2-way high-power microwave (HPM) waveguide combiner was designed and tested. It achieves excellent return loss and isolation, demonstrating multi-gigawatt power capacity for coherent microwave applications.

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Area of Science:

Engineering
Physics

Background:

Coherent microwave combination requires specialized equipment.
High-power microwave (HPM) systems demand efficient power handling and combination.

Purpose of the Study:

To theoretically design, build, and experimentally validate a compact 2-way high-power microwave waveguide combiner.
To achieve high performance in terms of return loss, isolation, and power capacity.

Main Methods:

Theoretical design of a 2-way HPM waveguide combiner.
Fabrication and experimental testing of the designed combiner.
S-parameter measurements to evaluate performance.

Main Results:

The designed combiner exhibited a return loss better than -25 dB.
Isolation between the two channels exceeded 25 dB, preventing inter-modulation.
Experimental validation demonstrated a power capacity reaching multi-gigawatts in the C-band.

Conclusions:

The compact 2-way HPM waveguide combiner is a viable solution for coherent microwave combination.
The device meets stringent performance requirements for high-power applications.
The experimental results confirm the theoretical design and multi-gigawatt power handling capability.