Calibration system for wide band array using true-time-delay bea

Details Calibration system for wide band array using true-time-delay bea Calibration system for wide band array using true-time-delay bea

1994-09-29

1996-02-20

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including antenna pattern plotting

342173, 342375, H01Q 300, H01Q 322, G01S 740

Patent

active

054933048

ABSTRACT:
A calibration and diagnostic system and method for evaluating the performance of a wide band array utilizing a true-time-delay beamforming network. A short pulse typically on the order of a 2 nanoseconds is synthesized by transmission of a large number of discrete, equally spaced frequencies over the bandwidth over a short period of time, during which the system response (amplitude and phase) is measured and stored in a computer. The collected data is then transformed into the time domain to demonstrate the range resolution of the system. By signal injection with a built-in calibration system, the setting of each programmable delay line of the array can be calibrated. A fiber-optic test set is used as a transponder in the far field to perform complete end-to-end tests of the array system.

REFERENCES:
patent: 3378846 (1968-04-01), Lowenschuss
patent: 5051754 (1991-09-01), Newberg
patent: 5172124 (1992-12-01), Becavin et al.
"Student Guide for Basic Network Measurements Using the HP 8510B Network Analyzer System", Edition 3.0, Jan. 1988, HP Course No. HP 8510B+24D.

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