Narda-MITEQ has developed a new line of four-channel downconverter modules that feature an integrated local-oscillator distribution network, enabling designers to save space and reduce component count in military radar and direction-finding systems.
The DA4 series modules combine Narda-MITEQ's standard broadband double-balanced mixers with input limiter protection diodes and IF low-noise amplifiers into a single integrated package measuring just 88.4 x 88.4 x 19.1mm, excluding connectors. Three of the four channels can be used for a monopulse radar receiver and the fourth for spur identification. The modules are also suitable for basic direction-finding applications with four antennas.
The DA4 series consists of three different modules, providing input frequency ranges of 0.5 to 2 GHz, 2 to 8 GHz and 8 to 18 GHz. All have an output IF range of 10 MHz to 250 MHz and deliver excellent microwave performance, with a conversion gain of 21 dB, noise figure of 8.5 dB and output power of 10 dBm. Channel-to-channel tracking is specified as +/-5 degrees for phase tracking and +/-0.5dB for amplitude tracking.
These robustly constructed modules are equipped with SMA female connectors for the inputs and outputs, and can be used in ambient temperatures ranging from -54 to 85 degree C.
