Ghozati, Seyed Urman  ORCID: https://orcid.org/0000-0002-6014-5223 and Quaglia, Roberto ORCID: https://orcid.org/0000-0003-3228-301X
2025.
Ka-band single-pole double-throw switch in GaN MMIC technology.
International Journal of Microwave and Wireless Technologies
10.1017/S1759078725000108
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Abstract
This work describes the design process of a single-pole double-throw (SPDT) microwave switch operating at Ka-band. It is tailored to a tunable reflective termination design that can be used in tunable power amplifier configurations. A high electron mobility transistor and a resonating network are employed in shunt configuration to enhance the performance in the output port’s active and inactive conditions. The small and large signal measurements showcase a 2 GHz bandwidth with an insertion loss and isolation better than −1.8 dB and −25 dB, respectively, and handling power levels of up to 3 W at 30.5 GHz. The load-pull measurements across the entire Smith chart offer comprehensive insights into the behavior of the SPDT when operating with complex and reactive loads, fulfilling the purpose of tunable reactive termination.
| Item Type: | Article |
|---|---|
| Date Type: | Published Online |
| Status: | Published |
| Schools: | Schools > Engineering |
| Publisher: | Cambridge University Press |
| ISSN: | 1759-0787 |
| Date of First Compliant Deposit: | 21 February 2025 |
| Date of Acceptance: | 10 December 2024 |
| Last Modified: | 03 Mar 2025 11:03 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/176368 |
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