Pasternack’s new coaxial limiting amplifiers cover a wide frequency range between 1 to 18 GHz. These broadband limiting amplifiers are used to protect sensitive microwave receivers by “limiting” excessive input power which could potentially create unwanted distortion or even damage the receiver. This new portfolio of limiting amplifiers accept a wide range of input power levels, while responding with a limited range of output powers between 15 and 19 dBm with a saturated power output deviation of ±0.5 dB over the frequency range, independent of the input. These RF amplifiers demonstrate a wide input dynamic range between -61 dBm to +20 dBm, high gain levels of 40 to 80 dB typical gain while exhibiting excellent gain flatness performance of ±1 dB depending on the specific model.

Our new wideband limiting amplifiers are housed in hermetically-sealed packages and are designed to withstand harsh environments with operating temperatures ranging from -30 to +70 degrees C. The connectorized SMA limiting amplifiers are unconditionally stable and include built-in voltage regulation, bias sequencing, and reverse bias protection for added reliability. Over-voltage protection is installed externally for easy repair and the amplifiers are fully matched internally for 50 Ohm input and output, which eliminates the customers need for any additional sensitive external RF tuning components.