Orthogonally polarized dual-band printed circuit antenna employing radiating elements capacitively coupled to feedlines
First Claim
1. In a dual polarized printed antenna comprising a ground plane, a first power divider array disposed over said ground plane, a first array of radiating elements disposed over said first power divider array, a second power divider array disposed over said first array of radiating elements, and a second array of radiating elements disposed over said second power divider array,the improvement wherein said first array of radiating elements comprises an array of radiating elements having a first size and being so configured as to operate within a first frequency band, and said second array of radiating elements comprises an array of radiating elements having a second size that is larger than said first size and being so configured as to operate within a second frequency band that is at least 1 GHz lower than said first frequency band, and wherein said second array of radiating elements have a gain that is at least 4.0 dB less than a gain of said first array of radiating elements throughout said first frequency band, and said first array of radiating elements have a gain that is at least 4.0 dB less than a gain of said second array of radiating elements throughout said second frequency band.
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Abstract
A dual polarized printed circuit antenna operating in dual frequency bands. A first array of radiating elements radiates at a first frequency, and a second array of radiating elements radiates at a second, different frequency. Separate power divider arrays are provided for each array of radiating elements, and the overall structure is provided in a stacked configuration.
158 Citations
4 Claims
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1. In a dual polarized printed antenna comprising a ground plane, a first power divider array disposed over said ground plane, a first array of radiating elements disposed over said first power divider array, a second power divider array disposed over said first array of radiating elements, and a second array of radiating elements disposed over said second power divider array,
the improvement wherein said first array of radiating elements comprises an array of radiating elements having a first size and being so configured as to operate within a first frequency band, and said second array of radiating elements comprises an array of radiating elements having a second size that is larger than said first size and being so configured as to operate within a second frequency band that is at least 1 GHz lower than said first frequency band, and wherein said second array of radiating elements have a gain that is at least 4.0 dB less than a gain of said first array of radiating elements throughout said first frequency band, and said first array of radiating elements have a gain that is at least 4.0 dB less than a gain of said second array of radiating elements throughout said second frequency band.
Specification
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- Resources
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Current AssigneeCOMSAT Corporation (Reorganized ISA SA)
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Original AssigneeCOMSAT Corporation (Reorganized ISA SA)
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InventorsZaghloul, Amir I., Sorbello, Robert M.
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Primary Examiner(s)Wimer, Michael C.
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Application NumberUS08/126,438Time in Patent Office1,019 DaysField of Search343/700 MS, 343/829, 343/846, 343/814US Class Current343/700.0MSCPC Class CodesH01Q 21/061 Two dimensional planar arraysH01Q 25/001 Crossed polarisation dual a...H01Q 5/42 using two or more imbricate...
