Metamaterial-based transmitarray for multi-beam antenna array assemblies
First Claim
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1. A metamaterial lens for a radio frequency (RF) antenna comprising a plurality of adjacent time-delay unit (TDU) cells, each TDU cell comprising:
- a dielectric material;
an inductive rectangular wire loop on a first side of the dielectric material arranged about a perimeter of the TDU cell; and
a capacitive patch on a second side of the dielectric material and positioned within the perimeter of the TDU cell.
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Abstract
A transmitarray, or radio frequency lens, can provide a large variation of time-delay. The transmitarray comprises a number of time-delay unit (TDU) cells that each have a capacitive patch and a rectangular wire loop separated by dielectric material. The rectangular wire loop allows current continuity to be maintained between adjacent TDU cells, even when different sized TDUs are included in the transmitarray.
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Citations
18 Claims
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1. A metamaterial lens for a radio frequency (RF) antenna comprising a plurality of adjacent time-delay unit (TDU) cells, each TDU cell comprising:
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a dielectric material; an inductive rectangular wire loop on a first side of the dielectric material arranged about a perimeter of the TDU cell; and a capacitive patch on a second side of the dielectric material and positioned within the perimeter of the TDU cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna array assembly comprising:
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a transmitarray having a focal distance, the transmitarray having a plurality of adjacent time-delay unit (TDU) cells, each TDU cell having an inductive rectangular wire loop located along a perimeter of the TDU cell, a capacitive patch, and a dielectric material separating the inductive rectangular wire loop and the capacitive patch; and a plurality of radiating elements arranged at a focal plane located the focal distance from the transmit array. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification