Transmitting and receiving signal switching circuit for wireless communication terminal
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United States of America Patent
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-
Mar 17, 1998
Grant Date -
N/A
app pub date -
Jun 5, 1995
filing date -
Dec 30, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A transmitting and receiving signal switching circuit for a wireless communication is disclosed, in which, in an initial portion of a wireless communication apparatus, i.e., in a high output amplifier and in a low noise amplifier, when signals are transmitted, the power source of the low noise amplifier is disconnected, and when signals are received, the power source of the high output amplifier is disconnected, thereby switching the transmitting and receiving signals. According to the present invention as described above, a switching circuit is used, so that the communication apparatus would become compact and convenient, and that the power consumption can be reduced. Further, the deterioration of the involved components can be prevented, thereby extending the life expectancy of the apparatus. Further, the number of the components are reduced, so that the manufacturing cost can be saved. Further, the circuit of the present invention can be applied not only to the wireless communication, but also to other data communications.
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