Power combiner and microwave processing apparatus using the same

The power combiner with a magic T-type waveguide and electrical length adjustment synchronizes magnetron microwaves efficiently, addressing synchronization challenges and reducing device size, enhancing microwave processing efficiency.

JP7874371B1Active Publication Date: 2026-06-16NISSHIN CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NISSHIN CO LTD
Filing Date
2026-02-09
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Conventional microwave synthesis systems face challenges in stably and efficiently combining high-power microwaves from magnetrons due to frequency and phase synchronization issues, requiring complex setups with semiconductor oscillators and leading to increased device size and operational complexity.

Method used

A power combiner using a magic T-type waveguide with an oscillation signal reflection unit and electrical length adjustment unit, which reflects and adjusts the electrical length of microwaves from each magnetron to synchronize their frequencies without needing additional semiconductor oscillators, allowing for stable high-power microwave synthesis.

Benefits of technology

Enables efficient and stable combination of high-power microwaves from magnetrons, reducing device size and operational complexity while maintaining synchronization, thus improving microwave processing capabilities.

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Abstract

The present invention provides a power combiner that enables higher output and more stable microwave synthesis while avoiding the need for larger equipment, and a microwave processing apparatus using the same. [Solution] The system comprises a magic T-type waveguide 3, a matching load 5, an impedance adjuster 7, and an adjustment waveguide 9. The magic T-type waveguide 3 comprises a main waveguide 11, an H-plane branch waveguide 13, and an E-plane branch waveguide 15. The main waveguide 11 has a first port 17 to which a magnetron 10 can be connected and a second port 19 to which a magnetron 20 can be connected. The H-plane branch waveguide 13 has a third port 21. The E-plane branch waveguide 15 has a fourth port 23. The matching load 5 is connected to the fourth port 23. The impedance adjuster 7 is connected to the third port 21 and reflects at least a portion of the oscillation signals Fa and Fb from the magnetrons 10 and 20. The adjustment waveguide 9 is adjusted so that the electrical lengths Ta and Tb are different.
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