Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1989-04-14
1990-12-25
Hille, Rolf
Communications: radio wave antennas
Antennas
With radio cabinet
343700MSFile, 343853, 455 89, H01Q 1240, H01Q 21000, H01Q 13080, H04B 1380
Patent
active
049806947
ABSTRACT:
A portable radiotelephone unit is provided with an internal antenna in a space between an internal, electrically conductive enclosure for electrical apparatus of the unit and an external, electrically nonconductive housing of the unit. The antenna is a microstrip, folded-slot, edge-congruent device comprising a stack of alternate, electrically conductive layers and dielectric layers. A high frequency band antenna module and a low frequency band antenna module are included in the antenna, and all layers of that antenna are dimensioned to determine, at least in part, the frequency characteristics of the antenna. Perpendicular and parallel attachments are shown for a feed cable extending, via a hole in the enclosure, between the antenna and radiotelephone unit electrical apparatus within the enclosure.
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"UHF Bent-Slot Antenna System for Portable Equipment-I" by H. Koboyama et al., IEEE Transactions on Vehicular Technology, vol. VT-36, No. 2, May 87, pp. 78-85.
Brown Peter Toby
GoldStar Products Company, Limited
Hille Rolf
Phelan Charles S.
LandOfFree
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