Prototype Receiver for Digital Beamforming Antennas

摘要

The report describes a connectorized prototype receiver for Digital BeamformingAntennas. The prototype receiver is intended to be a basis for a future construction of more integrated receive modules. It converts, in three mixer stages, the radar frequency at 3 GHz to a lower frequency suitable for the A/D converter placed after the receiver. This must be done without any significant reduction of the dynamic range and with a sufficient rejection of frequencies outside the signal band. The similarity between the different channels of the antenna must also be high so that good system performance can be obtained. Parameter requirements are discussed together with simulations and measurements made on the receiver.