Always-on Power Limiter Protects X-band Receivers

The RFuW Engineering model RFLM-802123QC-291 limiter module offers high power CW and peak power protection for X-band receivers (8.7 to 10.7 GHz).

RFMW announces design and sales support for a high power, SMT RF limiter. The RFuW Engineering model RFLM-802123QC-291, silicon, PIN-Diode limiter module offers both high power CW and peak power protection for X-band applications (8.7 to 10.7 GHz). Capable of handling average power up to 80 Watts (49 dBm) and pulsed peak power up to 200 Watts (53 dBm at pulse width = 40 usec, duty cycle = 5%), the RFLM-802123QC-291 maintains low flat leakage to less than 20 dBm (max), and reduces spike leakage to less than 0.5 ergs. Recovery time is <1 uSec. The combination of high peak power handling and fast recovery time is mandatory for mission-critical applications. RF performance is exceptional with insertion loss of less than 1.5 dB. This quasi-active limiter requires no external control lines or power supply connections offering “always on” protection. Offered in a 9 x 6 x 2.5 mm, ceramic surface mount package.

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About the Author
John Hamilton has over 40 years of experience in RF and Microwave technology, applications, technical support and marketing. He is the Vice President of Marketing at RFMW, holds multiple degrees and has a background in Test & Measurement.

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