Volume : II, Issue : VII, July - 2013

FPGA Implementation of Digital Beam forming for Phased array RADARs

Ch. Venkatesham

Abstract :

Phased array radar is very important in modern radar development and multiple digital beam forming technology. Beam forming is a signal processing technique used in antenna arrays for directional signal transmission or reception. Digital multiple beam forming on each antenna element about large phased array radar is impossible in processor based digital processing units, because it needs simultaneous processing many A/D channels. In this project we use multi array based beam forming technique with multiplexed signal processing unit on FPGA. The conventional techniques of completely duplicated hardware and also dynamic reconfiguration do not yield the real time parallel beam processing. The proposed technique employs multiplexed signal processing unit which is time shared for various beam formers. The scope of the work includes the VHDL modelling of 16 element phased array antenna system and RTL implementation of complex NCO, digital mixer, low pass filter, multiplexers, demultiplexers, ROM for coefficient storage and Multiplier unit. The design is functionally verified by simulating the code in ModelSim6.6b from Mentor Graphics. The FPGA synthesis is done using Xilinx ISE (13.2) tool.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

CH.Venkatesham FPGA Implementation of Digital Beam forming for Phased array RADARs International Journal of Scientific Research, Vol : 2, Issue : 7 July 2013

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