A four-way switchable power combiner/divider is proposed in this letter. The structure is based on a substrate integrated circular cavity, and control of the number of coupling probes is possible for graceful degradation. The proposed structure forms a switchable power combining circuit with amplifiers at 2.13 GHz. In addition, the proposed scheme provides improved graceful-degradation performance under the condition of amplifier's failure. The graceful-degradation characteristics of gain and output power are experimentally demonstrated as one or more amplifiers are switched off.
Bibliographical notePublisher Copyright:
© 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1213-1216, 2015 © 2015 Wiley Periodicals, Inc.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering