Digital signal transceiver

Details Digital signal transceiver Digital signal transceiver

2004-02-19

2008-03-25

Le, Lana (Department: 2618)

Telecommunications

Transmitter and receiver at same station

C455S076000, C455S078000, C455S118000, C455S084000, C455S085000, C455S086000, C455S550100

Reexamination Certificate

active

07349672

ABSTRACT:
A digital signal transceiver includes a frequency modulator for outputting a high-frequency signal frequency-modulated with a digital signal input thereto, a power amplifier, an antenna terminal, and an antenna switch. The antenna switch includes a first branch port for receiving a signal output from the power amplifier, a common port connected to the antenna terminal, said common port being connected to the first branch port in the transmitting mode, and a second branch port connected to the common port in the receiving mode. The transceiver further includes a filter having an input port thereof connected to the second branch port of the antenna switch, a high-frequency amplifier having an input port thereof connected to an output port of the filter, and a mixer for mixing a signal output from the high-frequency amplifier with the signal output from the frequency modulator.

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Data sheet XE1202, Low-power, integrated UHF transceiver, by XEMICS, pp. 1-27.

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