Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2006-01-11
2008-07-29
Phan, Tho G (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C455S575200
Reexamination Certificate
active
07405702
ABSTRACT:
An arrangement by which an external device is connected to a radio device via its antenna without modifying the radio device mechanically. The radiating element (311) of the antenna of the radio device is a conductive part of its casing, which is fed electromagnetically by means of a feed element (322). The connecting is implemented by a coupler (310) to be placed at the antenna on top of the casing, from which coupler there is an intermediate cable (350) to the external device. The coupler includes a coupling element (311), from which there is electromagnetic coupling to the radiating element (321) through a thin dielectric membrane, or direct galvanic coupling. From the coupling element to the jumper cable there is electromagnetic coupling through an intermediate element (312), or direct galvanic coupling. Because the radiating plane is located on the outer surface of the radio device, its distance to the coupling element can be made very small. Thus the attenuation caused by the coupler on the transfer path from the antenna port of the radio device to the external device is lower than in the known arrangements.
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Annamaa Petteri
Torvinen Veli
Darby & Darby P.C.
Phan Tho G
Pulse Finland Oy
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