Switching circuit for wideband signals

The present invention relates to a switching circuit for controlling the passage of a radiofrequency signal between a first input/output (101) and a second input/output (105), said circuit including at least one diode (D2) between said inputs/outputs (101, 105), said diode (D2) being polarized by a DC voltage source (Vdc2) via at least two crossed transmission lines (110, 120) interconnecting said diode (D2) with said DC voltage source (Vdc2). The invention can be used in particular for radiocommunication systems, in particular to power systems.