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In this paper, a custom software defined radio that implements a smart antenna array is used in the task of real-time beamforming. Specific beamforming algorithms are implemented in FPGA, remotely controlled by a computer host. The antenna array is mounted in a metallic cylinder and tested in anechoic chamber. Experimental measurements highlight the efficiency of the algorithms implementation. Moreover,...
This PhD work presents a potential architecture and implementation for an FPGA-based all digital antenna array transmitter for wireless radio communications. By enabling the design of antenna arrays without external Digital-to-Analog Converters (DACs), external upconversion stages and without complex layouts, the analog front-end can be summed up to just amplification, filtering and radiation.
This paper describes the design and in-house development of FPGA based Digital Beam Forming Hardware for 16 elements configuration. Key function of the System involves electronic steering of beam in desired direction to provide anti-jamming feature in communication and navigation satellites. This system has capability to maximize the received power in the direction of signal of interest & minimize...
Two-dimensional (2-D) IIR beam filter applications operating in ultra wide-band (UWB) radio frequency (RF) range requires hardware capable of handling high speed real-time processing due to its operation bandwidth lies in megahertz or gigahertz range. Two-dimensional IIR beam forming is used mainly for applications such as communications, radars and detection of directional sensing. A systolic architecture...
Radio-frequency (RF) digital phased array antennas are highly-useful for achieving electronically-scanned smart antenna apertures with applications in radar, signal intelligence, microwave and mm-wave imaging and wireless communication systems. However, digital phased array algorithms are of high computational complexity, which leads to correspondingly high circuit complexity in a VLSI implementation...
This paper describes technology development efforts in support of phased-array digital beamforming at Applied Radar, Inc. The development efforts are aimed at increasing the bandwidth and dynamic range and enabling real-time throughput of multi-channel array data. This digital beamforming approach enables improved calibration, increased coverage through multiple receive beams, and adaptive processing...
This paper has reported on the design and development of an FPGA based 2times2 MIMO testbed employing commercially available MAX289 RF transceiver chips and in-house developed antennas. Details of the operation of various parts of this system have been described. A particular attention has been paid to symbol synchronization which is crucial to achieving the data demodulation, channel estimation,...
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