| 摘要 |
<p>Association of three half-wave dipole antennas (A1-A3) spaced uniformly in the same plane and arranged concentrically with a fourth antenna (A4) situated at an equal distance from each of the three half-wave antennas and in a plane perpendicular to them so as to form a network of antennas fed with currents of like phase and like amplitude, the diameter of the circle containing the radiating elements of the three half-wave antennas being equal to one half- wavelength lambda 0 in air at the mean operating frequency, this dimension being reducible by the dielectric constant epsilon r when the set of antennas is embedded in a homogeneous dielectric medium. Application to omnidirectional ground-ground or ground-air transmissions in a disturbed surrounding medium.</p> |
