Development of a High-Efficiency Ka-Band 14 way Radial Waveguide Power Combiner for Satellite Communication and Radar Transmitters
Abstract
This study presents a 14-way waveguide power combiner applicable to the Ka-band (f±2 GHz). The proposed combiner integrates a dual T-type junction-based TE10-TM01 mode transducer with a radial combining structure, enabling symmetric electric field distribution while simultaneously maintaining low transmission loss. Through 3D simulations and experimental verification, the design demonstrated an insertion loss of less than 0.4 dB, a return loss greater than 16 dB, and a combined efficiency exceeding 95 %. The results indicate that the proposed structure is well-suited for Ka-band high-power systems employing solid-state power amplifier (SSPA) combination techniques.
Fields of Study & Subjects
Microwave Engineering and Waveguides
Advanced Power Amplifier Design
Antenna Design and Analysis
Publication details
- Journal / source
- The Journal of Korean Institute of Electromagnetic Engineering and Science
- Volume
- 37
- Issue
- 1
- Pages
- 26–32
- Publication date
- 1 January 2026
- Language
- EN