Front-end module comprising an ebd circuit, telecommunication device comprising the front-end module and method for operating them

The present disclosure relates to a front-end module for a telecommunication device with an EBD circuit (1) comprising a hybrid transformer (2) for coupling via a transmit port (21) to the telecommunication device transmitting a first frequency transmit signal, to an antenna (4), via a receive port (23) to the telecommunication device receiving a second frequency receive signal, and to a tuneable impedance circuit (6). In a first configuration the EBD circuit (1) is configured to isolate the transmit port (21) from the receive port (23) at the first frequency, and the FEM comprises a first filter (7) at the transmit port (21) for attenuating the transmit signal with a predetermined amount at the second frequency. In a second configuration the EBD circuit (1) is configured to isolate the transmit port (21) from the receive port (23) at the second frequency, and the FEM comprises a second filter (8) at the receive port (23) for attenuating the receive signal a predetermined amount at the first frequency.

Patent Publication Number: EP3361644

Year filing: 2017

Year approval: 2019

Validated for IOF-key: Yes

Attributed to: Universitaire Associatie Brussel