Self and mutual admittance of slot antennas on a dielectric half-space |
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Authors: | George V. Eleftheriades and Gabriel M. Rebeiz |
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Affiliation: | (1) NASA/Center for Space Terahertz Technology Electrical Engineering and Computer Science Department, University of Michigan, 48109-2122 Ann Arbor, Michigan |
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Abstract: | In this paper, an efficient implementation of the spectral domain moment technique is presented for computing the self and mutual coupling between slot antennas on a dielectric half-space. It is demonstrated that by the proper selection of the weighting functions in the method of moments, the analytic evaluation or simplification of the transverse moment integrals is enabled. This results into a significant reduction of the required computational labor. The method is then utilized in order to provide design data for the self and mutual admittances between two slot antennas on a dielectric substrate lens in the case of fused quartz (r=3.80), crystal quartz (r=4.53), silicon (r=11.9) and GaAs (r=12.8). The presented technique and associated results are useful when designing twin slot quasi-optical receivers, imaging arrays, phased arrays or power-combining arrays of slot elements at millimeter-wave frequencies. |
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