Phased array radar antenna with two-stage time delay units

Details Phased array radar antenna with two-stage time delay units Phased array radar antenna with two-stage time delay units

1994-02-16

1995-05-09

Blum, Theodore M.

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

Directive

Including a steerable array

342372, 342373, H01Q 322

Patent

active

054144337

ABSTRACT:
A phased array antenna having two stages of time steering control that achieve system performance requirements at minimum cost. The first-stage which is traditionally located at the subarray level, is a multi-bit time delay unit that has a sufficient number of bits to meet the system's range resolution requirements. The second-stage located at the radiating element level, is a single-bit time delay unit that meets the system's two-way instantaneous bandwidth requirements. This combination of first-stage and second-stage time steering control minimizes the number of subarrays required to achieve the system performance requirements.

REFERENCES:
patent: 4749995 (1988-06-01), Hopwood et al.
patent: 5107273 (1992-04-01), Roberts
patent: 5130717 (1992-07-01), Ewen et al.
patent: 5274385 (1993-12-01), Riza
"Radar Handbook," Merrill I. Skolnik, Editor in Chief, Naval Research Laboratory, McGraw-Hill Book Company, pp. 11-43 to 11-50, 1970.
"Bandwidth Criteria for Phased Array Antennas," J. Frank, Technology Service Corporation, Phased Array Antennas, Proceedings of the 1970 Phased Array Antenna Symposium, pp. 243-253, Jun. 1970.
"Survey of Time-Delay Beam Steering Techniques," R. Tang, Hughes Aircraft Company Ground Systems, Phased Array Antennas, Proceedings of the 1970 Phased Array Antenna Symposium, pp. 254-260, Jun. 1970.

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