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Panelized/modular electronic display having reinforced modular face panel assemblies for use in areas where high wind loading may be encountered. Laminated and reinforced junctions between modular face panel assemblies are incorporated to maintain structural integrity of the mutually attached reinfo

Panelized/modular electronic display having reinforced modular face panel assemblies for use in areas where high wind loading may be encountered. Laminated and reinforced junctions between modular face panel assemblies are incorporated to maintain structural integrity of the mutually attached reinforced modular face panel assemblies aligned along and about a large clear span area in the frontal region of the panelized/modular electronic display. Modular display components are accessible from the rear for easily accomplished maintenance. Other features enhance viewability in bright sunlight and other environments.

대표청구항 ▼

Panelized/modular electronic display having reinforced modular face panel assemblies for use in areas where high wind loading may be encountered. Laminated and reinforced junctions between modular face panel assemblies are incorporated to maintain structural integrity of the mutually attached reinfo

Panelized/modular electronic display having reinforced modular face panel assemblies for use in areas where high wind loading may be encountered. Laminated and reinforced junctions between modular face panel assemblies are incorporated to maintain structural integrity of the mutually attached reinforced modular face panel assemblies aligned along and about a large clear span area in the frontal region of the panelized/modular electronic display. Modular display components are accessible from the rear for easily accomplished maintenance. Other features enhance viewability in bright sunlight and other environments. antenna by reverse biasing said left first diode and forward biasing said left second diode to feed the split input signal to a top left quadrant of said antenna and by reverse biasing said right first diode and forward biasing said right second diode to feed the split input signal to the bottom left quadrant of said antenna.7. The antenna of claim 1 wherein the desired beam is formed by feeding a right portion of said antenna by forward biasing said left first diode and reverse biasing said left second diode to feed the split input signal to the bottom right quadrant of said antenna and by forward biasing said right first diode and reverse biasing said right second diode to feed the split input signal to the top right quadrant of said antenna.8. The antenna of claim 1 wherein the desired beam is formed by feeding all portions of said antenna by reverse biasing said left first diode, said left second diode, said right first diode, and said right second diode to feed the split signals to the top left, top right, bottom left, and bottom right quadrants of said antenna.9. The antenna of claim 1 wherein the input divider is one of a magic tee, a stacked magic tee, H-plane magic tee, E-plane magic tee, and a 90° hybrid.10. An antenna comprising: an array of radiating elements for radiating a desired beam formed by feeding an input signal to top left, top right, bottom left, and bottom right quadrants of said antenna; a dual-mode switched aperture antenna feed for feeding the array of radiating elements said dual-mode switched antenna feed comprising: an input divider for receiving the input signal and splitting the input signal;a left switch for receiving and switching the split input signal said left switch comprising a waveguide tee with a left first diode and a left second diode for switching the split input signal to the top left and the bottom right quadrants of the antenna; anda right switch for receiving and switching the split input signal said right switch comprising a waveguide tee with a right first diode and a right second diode for switching the split input signal to the top right and the bottom left quadrants of the antenna.11. The antenna of claim 10 wherein when the left first diode is reversed biased and the left second diode is forwarded biased the split input signal is fed to the top left quadrant and when the left fist diode is forward biased and the left second diode is reverse biased the split input signal is fed to the bottom right quadrant.12. The antenna of claim 10 wherein when the right first diode is reversed biased and the right second diode is forwarded baised the split input signal is fed to the bottom left quadrant and when the right first is forward biased and right second diode is reverse biased the split input signal is fed to the top right quadrant.13. The antenna of claim 10 wherein when the left first diode is reversed biased, the left second diode is reverse biased, the right first diode is reverse biased, and the right second diode is reverse biased the split signal is fed to the top left, top right, bottom left and bottom right quadrants of the antenna.14. The antenna of claim 10 wherein the left switch and the right switch comprise an H-plane waveguide guide tee and the diodes comprise one of PIN diode reflective switch assemblies connected to the H-plane tee, PIN diode reflective switch assemblies mounted to the H-plane tee with a coax to waveguide transition, and distributed waveguide PIN diodes mounted to the H-plane tee with a coax to waveguide transition.15. A method of feeding an input signal to selected portions of an antenna with a dual-mode switched aperture antenna feed to form a desired beam of said antenna said method comprising the steps of: splitting the input signal with an input divider; switching the split input signal to selected portions of the antenna with a left switch comprising a waveguide tee with a left first diode and a left second diode; and switch