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The rubber ducky antenna (or rubber duck aerial) is an electrically short monopole antenna, invented by Richard B. Johnson, that functions somewhat like a base-loaded whip antenna. It consists of a springy wire in the shape of a narrow helix, sealed in a rubber or plastic jacket to protect the antenna. [1] The rubber ducky antenna is a form of ...
A power antenna is an electrically motorized automotive radio antenna that raises and lowers either manually with a dash-mounted switch or automatically by turning the radio on or off. The automatic kind will also lower when the ignition switch is turned off. Unlike most car antennas adjusted directly by hand, power antennas retract completely ...
A halo antenna, or halo, is a center-fed 1 2 wavelength dipole antenna, which has been bent into a circle, with a break directly opposite the feed point. The dipole's ends are close, but do not touch, and the ends on either side of the gap may be flared out to form a larger air gap capacitor, whose spacing is used to fine-adjust the ...
A fractal antenna is an antenna that uses a fractal, self-similar design to maximize the effective length, or increase the perimeter (on inside sections or the outer structure), of material that can receive or transmit electromagnetic radiation within a given total surface area or volume. Such fractal antennas are also referred to as multilevel ...
Best Value: Antop TV Antenna Amplifier. Most Versatile: The Cimple Co TV Antenna Amplifier. Easiest Setup: Winegard LNA-100 Boost Antenna Amplifier. Best for Multiple TVs: Antennas Direct 8-Port ...
A reconfigurable antenna is an antenna capable of modifying its frequency and radiation properties dynamically, in a controlled and reversible manner. [2] In order to provide a dynamic response, reconfigurable antennas integrate an inner mechanism (such as RF switches, varactors, mechanical actuators or tunable materials) that enable the intentional redistribution of the RF currents over the ...