Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-04-21
1998-09-15
To, Doris H.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455 90, 455129, 455351, 343702, 343793, 379428, H04B 138
Patent
active
058094334
ABSTRACT:
A radio communication device a first housing portion (101) and second housing portion (103). The second housing portion is movably supported on the first housing portion to move between an extended position and a collapsed position. The second housing portion projects outwardly from the first housing portion in the open position. An antenna (107) is positioned in the second housing portion, the antenna includes a first component (640, 749, 859, 969) having a first tuning characteristic and a second component (647, 748, 858, 968) having a second tuning characteristic. One of the antenna components is tuned for a preferred characteristic when the radio telephone is collapsed and the other of the antenna components is tuned to the preferred characteristic when the antenna is extended.
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Sharder, Robert L., Electronic Communication, 6th ed., pp. 320-321.
Thompson David Charles
Vannatta Louis Jay
Motorola Inc.
To Doris H.
Vaas Randall S.
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