Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Patent
1997-11-18
2000-02-08
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
455 83, 455266, 455340, 333129, 333132, H04B 146
Patent
active
060236094
ABSTRACT:
This separating device is provided with a transmitting filter and a receiving filter. Each of the transmitting and receiving filters comprises a variable capacity diode and a resonant element, and compose a band elimination filter. Each of the elimination bands of the transmitting and receiving filters can be adjusted by changing the capacity value of each variable capacity diode. The elimination band of the transmitting filter is adjusted so as to coincide with the receiving frequency of the communication channel currently used. The elimination band of the receiving filter is adjusted so as to coincide with the transmitting frequency of the communication channel currently used.
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patent: 5541560 (1996-07-01), Turunen et al.
patent: 5554960 (1996-09-01), Ohnuki et al.
patent: 5659886 (1997-08-01), Taira et al.
patent: 5923229 (1999-07-01), Simons
Bost Dwayne D.
Fujitsu Limited
Vuong Quochien B.
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