| 摘要 |
A discontinuous panel shaped element forms one of the radiating dipole members of a radio frequency mobile antenna fed by a coaxial cable. The discontinuous element decouples antenna currents in the coaxial cable placed at short to medium distances from the element, while maintaining matched element performance as a long distance transmitter. The radiating elements are surrounded by an insulating material which serves as a dielectric, further improving antenna performance and also serving as environmental protection. The radiating elements are made from readily available sheet stock materials aligned in a generally planar configuration. The discontinuous dipole member is attached to the shield and the other dipole member is connected to the center lead of the coaxial cable. A small section of the central cable conductor is stripped of insulation and shielding, to serve as a miniature loading coil for loading the first plate-type conductive element. The specific geometries tested produce antenna performance that is generally insensitive to dielectric variations of as much as 25%.
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