High‐power low‐loss air‐dielectric stripline Gysel divider/combiner for particle accelerator applications at 352 MHz

• DOI: 10.1049/joe.2017.0793
• Publication Date: 2018-01-16T13:28:55Z
• Authors: Long Hoang Duc; Anh Nguyen Dinh The; Duong Bach Gia; Magnus Jobs; Roger Ruber; Dragos Dancila
• Keywords: Dielectric; Dual-Band Design; Power dividers and directional couplers; 02 engineering and technology; Quantum mechanics; 7. Clean energy; Engineering; FOS: Electrical engineering, electronic engineering, information engineering; 0202 electrical engineering, electronic engineering, information engineering; Annan elektroteknik och elektronik; Electrical and Electronic Engineering; Optoelectronics; Vacuum Electronic High Power Terahertz Sources; Other Electrical Engineering, Electronic Engineering, Information Engineering; Radio Frequency Integrated Circuit Design; Physics; Power (physics); Atomic and Molecular Physics, and Optics; Materials science; Physics and Astronomy; Electrical engineering; Physical Sciences; Stripline; Microwave Engineering and Waveguides

This study presents a new two‐way Gysel combiner based on an air‐dielectric stripline which allows to handle very high radio‐frequency power levels with low‐loss suitable for power combination in accelerator applications. The insertion loss of the combiner is 0.1 dB (2%). A thick stripline implementation allows improving the power capability in both continuous wave (CW) and pulsed operation. In addition, a mechanical tuner allows compensating for assembly and fabrication discrepancies. A methodology of designing the Gysel combiner as well as high‐power measurements up to 22 kW in pulsed mode are presented. Simulations and measurements are in very good agreement.