Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-12-05
1999-12-07
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455 76, 455 77, 455 78, H04B 140, H04Q 732
Patent
active
059998245
ABSTRACT:
A radio signal processing apparatus of a portable telephone which can share a first transmit/receive mode such as a digital/analog (D/A) compatible mode and second transmit/receive mode such as a personal communication service (PCS) mode. The radio signal processing apparatus includes: a frequency generator for generating frequencies necessary for a frequency conversion; a first mode converter for converting a frequency of a signal transmitted and received in the first mode according to a prescribed oscillating frequency generated from the frequency generator; a second mode converter for converting a frequency of a signal transmitted and received in the second mode according to a prescribed oscillating frequency generated from the frequency generator; an intermediate frequency processor for converting, transmitting and receiving intermediate frequencies according to a prescribed oscillating frequency generated from the frequency generator; a first switch for selectively connecting an antenna to the first mode converter or the second mode converter; and a second switch for selectively connecting the first mode converter or the second mode converter to the intermediate frequency processor.
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Combined Search and Examination Report Under Sections 17 and 18(3). "The Patent Office", Apr. 22, 1998.
Eisenzopf Reinhard J.
Nguyen Duc
Samsung Electronics Co,. Ltd.
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