Circuit, switching module comprising the same, and use of...

Details Circuit, switching module comprising the same, and use of... Circuit, switching module comprising the same, and use of...

2002-09-27

2008-03-11

Milord, Marceau (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S199100, C455S083000, C455S552100, C333S103000, C333S132000, C333S134000, C218S084000, C218S143000

Reexamination Certificate

active

07343137

ABSTRACT:
The invention relates to a circuit comprising an antenna input (1), a signal input (2) and a signal output (3), and a switching unit (4), wherein the antenna input (1) is connected to a first protection device (6) against electrostatic discharges, said first protection device (6) being a band-pass filter in a π-configuration. The advantage of the first protection device (6) is that it eliminates the need for a band-pass filter in the front end module, when used in a mobile telephone. Furthermore, the band-pass filter has a very good filtering characteristic, enabling ESD-related disturbances to be effectively suppressed. The invention also relates to a switching module and to the use of the same.

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