Pasternack Enterprises has introduced new wide dynamic range broadband limiting amplifiers that are commonly used in electronic warfare, microwave receivers and broadband communications systems. These coaxial limiting amplifiers cover a wide frequency range between 1 to 18 GHz and are used to protect sensitive microwave receivers by “limiting” excessive input power which could potentially create unwanted distortion or even damage the receiver.
The limiting amplifiers can 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.
The amplifiers are housed in hermetically-sealed packages and are designed to withstand harsh environments with operating temperatures ranging from -30 to +70 degrees C. They have SMA connectors and include 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.
