Hi-Rel Limiters Protect Sensitive RF Receivers
Fairview Microwave has expanded its line of broadband, high-power, coaxial packaged limiters, now comprising 13 unique models designed to protect sensitive components from high-power microwave signals in applications such as radar, electronic warfare, military communications, point-to-point radio,
SATCOM, fiber-optic communications, instrumentation and R&D.
The 50 Ω limiter family covers a wide frequency range, from 200 MHz to 40 GHz, and provides high CW power handling to 200 W peak, low leakage power of 10 to 18 dBm and fast recovery within 10 ns to 15 μs, depending on the model. Under hard limiting, the limiters suppress even-order harmonics. The insertion loss varies by frequency band, from 0.8 dB for the 4 GHz unit to 4.5 dB for a 40 GHz model. The input VSWR for the family is typically less than 2:1, except for a couple of the 40 GHz models.
The limiters do not require any external matching components and are packaged in compact housings with thru mounting holes and field replaceable SMA or 2.92 mm connectors, enabling the limiters to be mounted onto circuit boards. Built from high-reliability assemblies, the rugged designs meet MIL-STD-202 environmental test conditions for shock, humidity, vibration, altitude and temperature cycle and are guaranteed to operate from –54°C to +85°C.
Fairview Microwave’s high-power coaxial limiters are available for immediate shipment, and no minimum order quantity is required.