Portable wireless apparatus

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C343S792000, C343S702000, C343S7000MS

Reexamination Certificate

active

07398113

ABSTRACT:
A thinner portable wireless telephone with a thinner built-in antenna. An antenna unit is composed of a first radiating conductor and a second radiating conductor. The second radiating conductor having about half electrical length of the first radiating conductor is arranged so as to correspond the first radiating conductor from its center to one end in parallel. In addition, one ends of the first and second radiating conductors are electrically connected and power is supplied to around the center of the first radiating conductor and the other end of the second radiating conductor. Only electric current flowing on the external surfaces of the antenna unit causes radio waves. As a result, the space between the first and second radiating conductors can be narrowed, thus making it possible to construct a thinner antenna unit. Thus a portable wireless apparatus can be made thinner.

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patent: 5781158 (1998-07-01), Ko et al.
patent: 6281851 (2001-08-01), Tay et al.
patent: 6906677 (2005-06-01), Yamamoto et al.
patent: 2002/0024474 (2002-02-01), Chen
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patent: 11-205179 (1999-07-01), None
patent: 2000-101333 (2000-04-01), None
patent: 2000-252731 (2000-09-01), None
patent: 2001-156898 (2001-06-01), None
patent: 2001-257522 (2001-09-01), None

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