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Limiters Protect Receivers To 18 GHz

April 30, 2009

Model OLD2644A is a Schottky diode limiter from OMNIYIG, Inc. designed for applications from 8 to 16 GHz but usable from 2 to 18 GHz. Its typical application is to protect receiver front ends and other sensitive components from high-level signals. The limiter features low insertion loss and VSWR at signal levels below the turn-on point (+5 to +10 dBm), which act as variable shunt (reflective) impedances beyond the turn-on point. In doing so, they ensure that high-level signals do not damage the sensitive components following the limiter in a signal chain. The limit can handle CW power levels to 10 W and peak power levels to 1 kW with response time on the order of 200 to 500 ns. The compact coaxial limiters are supplied with SMA connectors.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.