Phased array antenna with active parasitic elements
AssigneeLucent Technologies Inc.
InventorsRichard Thomas Aiken, Ming-Ju Tsai
Life of this patent
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Abstract
A phased array antenna includes an active or beam forming array portion, and active parasitic elements that transmit and/or receive signals. The parasitic elements serve the dual purpose of providing a uniform impedance for elements at the edge of the array portion of the antenna while also providing active elements that are used to transmit and/or receive signals. The active parasitic elements may transmit and/or receive at the same frequency as the array portion or at a different frequency than the array portion. It is also possible for the active parasitic elements to have a different polarization than the elements of the array portion.
Claims21
An antenna, comprising:
- a beam forming array having a plurality of array elements;
- and
- a plurality of active parasitic elements positioned adjacent to the beam forming array, where the plurality of active parasitic elements are fed separately from the plurality of array elements.
An antenna, comprising:
- a beam forming array having a plurality of array elements;
- and
- a plurality of active parasitic elements positioned adjacent to the beam forming array,
- where at least one of the active parasitic elements comprises more than one subelement, and where the plurality of active parasitic elements are fed separately from the plurality of array elements.
Dependencies are inferred from the claim text.