A C-band digital beamforming array

A 32-element C-band digital beamforming (DBF) array which serves as a testbed for algorithm development and demonstration of digital beamforming technology is presented. Cost reduction, primarily in the areas of receiver modules, I/Q generation, and array alignment/calibration, was an overall consid...

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Bibliographic Details
Published in1988 IEEE AP-S. International Symposium, Antennas and Propagation pp. 1385 - 1388 vol.3
Main Authors Simonangeli, L.J., Agrawal, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1988
Subjects
Antenna arrays
Array signal processing
Calibration
Costs
Dipole antennas
Hardware
Integrated circuit technology
Jamming
Signal processing algorithms
Testing
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DOI10.1109/APS.1988.94360

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Summary:A 32-element C-band digital beamforming (DBF) array which serves as a testbed for algorithm development and demonstration of digital beamforming technology is presented. Cost reduction, primarily in the areas of receiver modules, I/Q generation, and array alignment/calibration, was an overall consideration. Individual components of the beamforming system are discussed. Topics covered include receiver modules, I/Q generation, calibration/array alignment, and the technique used for monitoring quality and integrity of digitized array data. The subject of system drift is addressed by comparing single-source receive patterns taken at various times. RF isolation is demonstrated using IF spectral plots computed from digitized receiver module data. In addition, single-source receive patterns for various arrival angles are presented. The experimental data is used to illustrate the performance of a DBF array in two rather important application areas, namely, spatial analysis for source detection and localization and adaptive nulling.< >
DOI:10.1109/APS.1988.94360