Plug-and-play antenna chip simplifies phased array radar

Analog Devices has introduced a highly integrated, active antenna beamforming chip that enables designers to quickly replace bulky, mechanically steered antenna platforms with a compact, solid-state solution for phased array radar and communications systems. The ADAR1000 chip simplifies design and significantly decreases the size, weight and power of phased array radar systems for surveillance, defense, air traffic control, communications and weather monitoring. For avionics designers, the device allows flat-panel antenna arrays, which reduces the profile of conventional radar systems and facilitates the design of smaller, lighter aircraft. The new device is a plug-and-play chip that enables designers with little or no RF experience to extend the performance and operating lifetime of their radar systems. The four-channel ADAR1000 active antenna beamforming chip replaces 12 discrete components needed for antenna phase-gain adjustments and digital controls. The IC supports TDD across the X and Ku bands. It includes an integrated T/R switch than can be used to choose the common port as an input for transmit (Tx) or an output for receive (Rx). The four pairs of Tx and Rx channels have independently programmable gain and phase settings. The device can be configured to directly control all aspects of external T/R module pulsing with minimal extra circuitry. “ADI is combining the industry’s broadest RF portfolio with extensive design and packaging expertise to help customers quickly implement phased array antennas,” said John Cowles, general manager of Analog Devices’ RF and Microwave Business Unit. “Our new phased array offering is smaller, lighter, and as powerful as a typical phased array solution. It also increases potential uses for phased array as it significantly reduces the profile of the antenna.”