Foldable portable telephone with improved antenna gain

Details Foldable portable telephone with improved antenna gain Foldable portable telephone with improved antenna gain

1996-09-30

1997-09-16

Chiang, Jack K.

Telephonic communications

Terminal

Housing or housing component

379428, 379434, 455 90, H04M 100, H04B 138

Patent

active

056688679

ABSTRACT:
A foldable portable telephone is made up of an upper casing having a receiver portion, and a lower casing having a transmitter portion. The lower casing is rotatably connected to the upper casing by a hinge. When the lower casing is rotated away from the upper casing, the receiver portion is moved to protrude from the upper casing. At this instant, the telephone is brought into an off-hook state. When the lower casing is rotated onto the upper casing, the receiver portion is retracted into the upper casing while the telephone is brought into an on-hook state. The receiver portion, when protruded from the upper casing, increases the distance between an antenna and the user's ear. In this condition, the antenna is not influenced by the user's body and, therefore, maintains a sufficient antenna gain.

REFERENCES:
patent: 5260998 (1993-11-01), Takagi
patent: 5335368 (1994-08-01), Tamura

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