Portable type radio equipment

Details Portable type radio equipment Portable type radio equipment

2005-08-23

2005-08-23

Appiah, Charles N. (Department: 2686)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S073000, C455S107000, C455S121000, C330S129000

Reexamination Certificate

active

06934557

ABSTRACT:
In a radio equipment of portable type, the impedance of an antenna is optimized by adjusting a matching circuit which has the adjustment function and is connected to an antenna, based on a reflection phase sent back from the antenna, outputted from a reflection phase detector, and a current supplied to a transmitter-receiver which generates a transmitting signal.

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