Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna pattern plotting
Reexamination Certificate
2005-07-26
2005-07-26
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including antenna pattern plotting
C455S562100, C455S276100, C333S159000
Reexamination Certificate
active
06922169
ABSTRACT:
A power coupler including a differential phase shifter for differentially adjusting the relative phase between signals on a pair of signal lines; and a hybrid coupler which is coupled to the pair of signal lines. The power coupler may be employed in an antenna including first and second signal lines; a differential phase shifter for differentially adjusting the relative phase between signals on the first and second signal lines; a first set of one or more radiating elements; a second set of one or more radiating elements; and a hybrid coupler having a first port coupled to the first signal line, a second port coupled to the second signal line, a third port coupled to the first set of radiating elements, and a fourth port coupled to the second set of radiating elements. Elevation beam width is adjustable independently of azimuthal beam width.
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Linehan Kevin Eldon
Moh'd Izzat Narian Moh'd Kheir
Zimmerman Martin Lee
Mull F H
Tarcza Thomas H.
Welsh & Katz Ltd.
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