A Low-Loss 1-4 GHz Optically-Controlled Silicon Plasma Switch
| Autor: | Fisher, Alden, Missen, Zach Vander, Semnani, Abbas, Peroulis, Dimitrios |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | 2021 IEEE 21st Annual Wireless and Microwave Technology Conference (WAMICON), 2021, pp. 1-4 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/WAMICON47156.2021.9443620 |
| Popis: | This paper presents a low-loss optically-controlled inline RF switch suitable for L- and S-band applications. Under 1.5 W laser power, the switch exhibits a measured ON-state insertion loss of less than 0.33 dB and return loss better than 20 dB across the band. The measured OFF-state isolation ranges from 27 dB at 1 GHz to 17 dB at 4 GHz. The switch comprises a single silicon chiplet excited by a 915-nm laser fiber which creates electron-hole pairs, thereby exciting the ON-state silicon plasma. An optical fiber is guided through the bottom of the RF substrate to illuminate the chiplet, which bridges a 1.075-mm microstrip line gap. To the best of our knowledge, this is the lowest-loss silicon plasma switch demonstrated today. Comment: 4 pages, 5 figures, to be published in IEEE Wireless and Microwave Technology Conference (WAMICON), 2021 |
| Databáze: | arXiv |
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