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A novel sampling scheme for digital phased array antennas is proposed in this paper. This technique allows us to reduce the number of analog paths to one and simplify the required processing power especially for large arrays. All the elements of an array receive the same copy of the desired signal (similar information) with different delay (unique information). We try to eliminate the common information...
This paper describes the design methodology and low-cost solutions implemented in the a low-cost 1K element phased array system. The system operates at 12.2 to 12.7 GHz supporting both left hand and right hand circular polarizations. The total radiation gain is 31.8 dBi and the axial ratio is 1.5 dB. The total height and weight of the system are only 5 cm and 9 Kg respectively. The techniques and...
A low-complexity systolic-array architecture is proposed for obtaining multiple(N) broadband radio-frequency (RF) beams in smart antenna arrays. The N-beam 2D IIR digital filter is based on the concept of 2D passive ladder network resonance, leading to differential-form implementations which are highly-suitable for RF throughput levels. The proposed beamformers are converted to differential-form discrete...
The Army Digital Array Radar (DAR) project's goal is to demonstrate how wide-bandgap semiconductor technology, highly-integrated transceivers, and the ever-increasing capabilities of commercial digital components can be leveraged to provide new capabilities and enhanced performance in future low-cost phased array systems. A 16-element, S-band subarray has been developed with panel-integrated, plastic-packaged...
We develop a 24-GHz switch-antenna array frequency-modulated continuous-wave (FMCW) radar system composed of a single transmitter, a single transmitting antenna, four receiving antennas, a single-pole four-throw (SP4T) switch, and a single receiving channel. The antennas are integrated with radio-frequency (RF) and intermediate-frequency (IF) circuits to reduce the interconnection loss and realize...
This paper describes how Thales surface radar product policy is evolving from active electronically steered antenna (AESA) radar to digital radar in order to improve its capabilities when operating in challenging electromagnetic environments. It shows how digital receiver technology (with an analogue-to-digital converter behind every receive antenna element) tailored for the digital beam forming array...
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