Alford loop

Alford loop

[′ȯl·fərd ‚lüp]
(electromagnetism)
An antenna utilizing multielements which usually are contained in the same horizontal plane and adjusted so that the antenna has approximately equal and in-phase currents uniformly distributed along each of its peripheral elements and produces a substantially circular radiation pattern in the plane of polarization; it is known for its purity of polarization.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
In this paper, a triband omnidirectional CP cylindrical dielectric resonator antenna (DRA) with a top-loaded modified Alford loop which satisfies 1.9 GHz GSM, 2.4 GHz WLAN, and 3.5 GHz WiMAX applications is proposed.
As shown in Figure 1(a), the circular patch of the modified Alford loop that locates on the top of the DRA has a diameter of [d.sub.1].
In this paper, a triband omnidirectional CP DRA with a top-loaded modified Alford loop is proposed.
Adopting the left-hand loading loop [16] and the Alford loop structure [17] can obtain good impedance match, but which have a disadvantage of complicated configuration.
The most famous HP omnidirectional wire-structure antenna is the Alford loop [13].
R., "Omni-directional horizontally polarized Alford loop strip antenna," US Patent 5767809, Jun.