Radome effects on an electromagnetically coupled dipole

The computed and measured influences of a radome on both the input impedance and radiation pattern of an electromagnetically coupled dipole are described. The analysis proceeds from the integral equation technique solved by the moment method and associated with the simple one-port model. Return losses S/sub 11/ of electromagnetically coupled dipoles covered and uncovered by a radome are presented. As expected, with a radome a shift in the resonance frequency and also a degradation of the matching take place. Theoretical and experimental data agree within 0.3% for the frequency and 1.4% for the amplitude. Results show that the resonant frequency is shifted, the matching is significantly degraded, and the radiation pattern is not deeply altered.<<ETX>>