Device for separating transmitting waves and receiving waves and

Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention

Patent

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Details

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.

REFERENCES:
patent: 5323127 (1994-06-01), Komazaki et al.
patent: 5442812 (1995-08-01), Ishizaki et al.
patent: 5475871 (1995-12-01), Shalev et al.
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

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