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Ultra-High-Speed, Photonics-based, Radio Frequency Switch

Detailed Technology Description
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

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

 


 
Country/Region
USA

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