Broadband composite dipole antenna arrays for optical wave mixing
First Claim
1. A composite macro dipole antenna array comprising:
- at least one non-conducting substrate;
a plurality of macro composite dipole antennas disposed on the substrate generally parallel to each other, each macro composite dipole antenna comprising a plurality of micro dipole antennas arranged in a linear column array in one dimension on the substrate surface; and
a plurality of reactive circuits including a nonlinear component disposed between each of the micro dipole antennas and electrically coupled to the micro dipoles, each reactive circuit comprising a quarter wave transmission line that is substantially parallel resonant at the frequencies f1 and f2.
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Accused Products
Abstract
A broadband composite dipole array (CDA) includes an array of macro dipoles on a non-conducting substrate adapted to receive radiation at two frequencies. Each macro dipole is an array of micro dipoles adapted to receive radiation at substantially the mean of the two frequencies. The micro-dipoles are coupled to each other by a parallel resonant circuit including a nonlinear element, wherein the minimum impedance of the circuit is a substantially short circuit at the difference frequency f1−f2, and the circuit has a substantially open circuit impedance in the range of frequencies from f1 to f2. The micro dipoles resonate efficiently at both frequencies f1 and f2 with low-loss. The nonlinear element in the resonant circuit generates a signal at the difference frequency which is the resonant frequency of the macro dipole antenna. A composite of macro dipole antennas couple electromagnetically via a cluster of micro-dipole elements to broaden the bandwidth over a range of frequencies from f1 to f2 at which the macro dipole antenna resonates.
28 Citations
15 Claims
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1. A composite macro dipole antenna array comprising:
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at least one non-conducting substrate; a plurality of macro composite dipole antennas disposed on the substrate generally parallel to each other, each macro composite dipole antenna comprising a plurality of micro dipole antennas arranged in a linear column array in one dimension on the substrate surface; and a plurality of reactive circuits including a nonlinear component disposed between each of the micro dipole antennas and electrically coupled to the micro dipoles, each reactive circuit comprising a quarter wave transmission line that is substantially parallel resonant at the frequencies f1 and f2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification