Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Reexamination Certificate
2007-01-30
2007-01-30
Lee, Benny T. (Department: 2817)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
C333S164000, C343S767000
Reexamination Certificate
active
10949842
ABSTRACT:
A phased array antenna is provided having a plurality of phase shifter devices for phase shifting and beam steering a radiated beam of the phased array antenna. The plurality of phase shifter devices are interconnected with an interconnect structure comprising a plurality of linear array substrate slats. Each linear array substrate slat includes a plurality of radiating elements formed using first and second metal layers of the substrate slat, a plurality of phase shifter devices and a common RF feed conductor for the plurality of radiating elements. The common RF feed conductor is formed on a third metal layer of the substrate slat that is disposed between the first and second metal layers. The common RF feed conductor is configured to include a single location for electrical connections to receive RF signals for the plurality of radiating elements. The phased array antenna also includes bias/control conductors applied to selected areas of the third metal layer, a fourth metal layer applied over the second metal layer and a shielding metal layer applied on the fourth metal layer. The bias/control conductors are configured to include a single location for electrical connections to receive bias voltages and control signals. The fourth metal layer includes circuit connections from the bias/control circuitry to the plurality of phase shifter devices. Each phase shifter device is attached to a radiating element via a mounting location on the shielding metal layer. Accordingly, a phased array antenna interconnect structure is provided that reduces the number of electrical connections required to provide RF signals and bias/control signals to multiple radiating elements and phase shifters, respectively, of the phased array antenna and provides a cost effective phased array antenna architecture that has a single locus of electrical connection for RF and bias control signals embedded in a multi-layer linear array or slat substrate of the phased array antenna.
REFERENCES:
patent: 6650291 (2003-11-01), West et al.
patent: 6822617 (2004-11-01), Mather et al.
patent: 6950062 (2005-09-01), Mather et al.
Holter, H. Chio, T., Schaubert, D.H.,Experimental Results of 144-Element Dual-Polarized Endfire Tapered-Stop Phased Arrays:IEEE Transactions on Antennas and Propagation, vol. 48, No. 11, Nov. 2000, pp. 1707-1718.
C. B. Wyllie, G. M. Lewis, R. A. Lewis,Dual-Polar Vivaldi Antennas For Phased Arrays With Wide-Angle Scanning,11thInternational Conference on Antennas and Propagation, Apr. 17-20, 2001, Conference Publication No. 480 © IEE 2001, pp. 672-676.
Mather John C.
West James B.
Eppele Kyle
Jensen Nathan O.
Lee Benny T.
Rockwell Collins, Inc.
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