Patent ID: 6804200
Filing Date: 2004-10-12
Classification: H04B

Abstract:
Switching network for connecting at least one high-frequency signal between at least one transceiver (1-4) and at least one other transceiver (28-31), characterized in that it comprises:a first switching stage (A) with at least two similar switching modules (A1-4) for connecting at least one transceiver (1-4), the switching modules (A1-4) each having a power splitter (5-8) and at least one fixed or variable signal attenuator (9-12) and outputs (1/1-1/4) at which the unattenuated input signal and at least one attenuated input signal are available; a second switching stage (B) with at least one switching module (B1; B2) which has at least two input (Bu 1/5; Bu 2/5) downstream of each of which a stepped attenuator (13-16) is connected and a power splitter (17; 18) which combines the inputs to form a common output signal (Bu 5/1); and a third switching stage (C) with at least one switching module (C1; C2) which comprises a four-pole hybrid coupler (19; 20) with two inputs (Bu 5/3, Bu 5/5) and two outputs, the output (Bu 7/1, Bu 7/2) having attenuators (21-24) connected upstream to which at least the other transceiver (28-31) is connectable; the inputs of the second and third switching stages (B; C) being connectable as desired, by means of jumpers and/or connection cables, to the outputs of the first and second switching stages (A; B).