Cellular phone and method of operating the same

Details Cellular phone and method of operating the same Cellular phone and method of operating the same

2007-09-11

2007-09-11

Eng, George (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S129000, C343S846000, C343S848000

Reexamination Certificate

active

10436154

ABSTRACT:
A cellular phone covering a plurality of frequency bands, includes (a) an antenna, (b) a high-frequency circuit, (c) an antenna-matching circuit electrically connecting in series between the antenna and the high-frequency circuit, and (d) a first unit which varies a ground length in accordance with a frequency band in which the cellular phone makes communication with others, the ground length being defined as a length of a ground area for the antenna-matching circuit.

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patent: 2002-076719 (2002-03-01), None

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