Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1997-07-02
2000-02-29
Kim, Robert H.
Communications: radio wave antennas
Antennas
With radio cabinet
343700MS, 343872, 343841, 343793, 343846, 343888, 343901, 343906, 455 90, 455 89, H01Q 124
Patent
active
060314958
ABSTRACT:
An antenna is provided for a wireless communication device such as a handheld radio or cellular telephone. The antenna may be either embedded internally in the transceiver or may be mounted externally thereof. The antenna comprises a pair of 1/4 wave radiating elements which are coupled out of phase to create an end fire bi-directional pattern for the antenna. The radiating elements are attached to a micro-strip transmission phasing device which is comprised of a center conductor, a ground plane and a substrate material. The micro-strip transmission phasing device supplies a zero degree to one hundred eighty degree phase shift from one radiating element to the other radiating element.
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Doug DeMaw "Lightweight Trap Antennas--Some Thoughts", pp. 15-18, Jun. 1983 .
Hamma Frank
Simmons Kenneth D.
Sullivan Jonathan L.
Winter Blake
Centurion Intl., Inc.
Kim Robert H.
Lauchman Layla G.
Thomte Dennis L.
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