Wide-band coupler
A coupling circuit, including: a coupler including a first conductive line and a second conductive line coupled to the first one; at each end of the second line of the coupler, a two-output signal splitter; and at each output of each splitter, a filtering function.
1. A coupling circuit comprising:
a coupler comprising a first conductive line and a second conductive line coupled to the first conductive line;
at each end of the second line of the coupler, a two-output signal splitter; and
at each output of each splitter, a filtering function.
2. The circuit of claim 1 , wherein the first conductive line of the coupler is intended to be interposed on a transmission line of a radio transmit-receive chain.
3. The circuit of claim 1 , wherein the respective outputs of the filtering functions are connected to detection circuits, respectively assigned to different radio transmit-receive paths.
4. The circuit of claim 1 , wherein first outputs of each splitter are processed by a low-pass filter.
5. The circuit of claim 4 , wherein second outputs of each splitter are processed by a correction filter.
6. A radio transmission chain comprising:
two paths sharing a same antenna; and
a coupling circuit including:
a coupler comprising a first conductive line and a second conductive line; coupled to the first conductive line;
at each end of the second line of the coupler, a two-output signal splitter; and
at each output of each splitter, a filtering function.