Ultra-High-Speed, Photonics-based, Radio Frequency Switch
- 詳細技術說明
- The inventionis Microwave Photonics (MWP) RF switch with high switching speed andultra-short on/off transition time. High-speed RFswitches are an essential component in frequency hopping RF systems, securemicrowave communications, RF device/system testing, and frequency divisionmultiplexing systems. The RF switch developed by UGA inventors is capable of: (1) switching a single frequency signal on and off; (2) switching one frequency out from a signal consists of twodifferent frequencies; and (3) removing a single frequency from a large number of frequency. Switching canbe performed at GHz speed, which reduces the undesired transition time betweenswitching.
- *Abstract
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Thehigh-speed MWP RF switch makes use of a fast tunable MWP notch filter to blockthe unwanted channel. This blocking is achieved by use of a phasemodulator-based loop mirror filter. The MWP notch filter is continuously andrapidly tunable with a high rejection ratio of 50 dB and uniform filter shape.Experimentally, both the RF on/off switch and the two-channel switch can beoperated at GHz rate with a switching time of < 100 pico-seconds. Thisdesign significantly improves the switching speed to picoseconds level as wellas providing a stable and repeatable switching performance.
References and Intellectual Property
Patent pending, PCT publication WO2016138379
J. Ge and M. P. Fok, "Ultra High-SpeedRadio Frequency Switch Based on Photonics," Scientific Reports, vol. 5,15882; doi: 10.1038/srep15882 (2015).
- 國家/地區
- 美國
