Design and Implementation of FRM-Based Wideband Channelizer for Passive Detection and Jamming Integrated Processor

In this paper, we propose a frequency response masking (FRM)-based wideband channelizer for passive detection and jamming integrated (PDJI) processor to achieve high sensitivity and the ability to simultaneously jam multiple signals. The FRM method is used to design the prototype filter with narrow transition bandwidth (NTB) in order to acquire low complexity. The prototype filter with NTB is decomposed into the polyphase filters of the channelized receiver and channelized transmitter structures by polyphase decomposition. A hardware circuit design of the PDJI processor based on radio frequency system on chip (RFSoC) is presented, which has 5-channel receiving and 1-channel transmitting capability. The proposed FRM-based wideband channelizer structure for PDJI processor is implemented on Xilinx Zynq UltraScale+ XCZU47DR chip. Experimental results demonstrate that, compared to the non-maximally decimated digital channelizer and generalized polyphase digital channelizer, the proposed FRM-based wideband channelizer offers 21.73% and 23.23% reduction in multiplier consumption, and 18.66% and 19.76% reduction in chip power respectively under single channel receiving and single channel transmitting conditions.