SELF AND MUTUAL ADMITTANCE OF SLOT ANTENNAS ON A DIELECTRIC HALF-SPACE

In this paper, an efficient implementation of the spectral domain mome nt technique is presented for computing the self and mutual coupling b etween slot antennas on a dielectric half-space. It is demonstrated th at 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 o rder to provide design data for the self and mutual admittances betwee n two slot antennas on a dielectric substrate lens in the case of fuse d quartz (epsilon(r) = 3.80), crystal quartz (epsilon(r) = 4.53), sili con (epsilon(r) = 11.9) and GaAs (epsilon(r) = 12.8). The presented te chnique and associated results are useful when designing twin slot qua si-optical receivers, imaging arrays, phased arrays or power-combining arrays of slot elements at millimeter-wave frequencies.