Integrated filter and directional coupler assemblies

An integrated filter and electromagnetic coupler assembly comprising:

• an input port, an output port, a coupled port, and an isolation port;
• a termination impedance connected to the isolation port;
• a filter including a capacitance, a first series inductance, and a second series inductance, the first and second series inductances being connected in series along a series path between the input port and the output port;
• a first coupling element positioned physically proximate the first series inductance and extending between the coupled port and the isolation port, the first series inductance and the first coupling element being configured to provide a coupled signal at the coupled port in response to an input signal being received at the input port, the coupled signal being derived from the input signal via inductive coupling between the first series inductance and the first coupling element;
• a second coupling element positioned physically proximate the second series inductance;
• and
• a coupling switch configured to connect the second coupling element to the first coupling element in series between the coupled port and the isolation port.

A wireless device comprising:

• an integrated filter and electromagnetic coupler assembly having an input port, an output port, a coupled port, and an isolation port, the integrated filter and electromagnetic coupler assembly including a filter and a coupling element, the filter having a capacitance and a series inductance, the coupling element being positioned physically proximate the series inductance and extending between the coupled port and the isolation port, the series inductance being connected between the input port and the output port, and the coupling element and the series inductance being configured to provide a coupled signal at the coupled port in response to an input signal being received at the input port;
• a transceiver configured to produce a transmit signal;
• a power amplifier module coupled to the transceiver and to the input port of the integrated filter and electromagnetic coupler assembly, the power amplifier module being configured to receive the transmit signal from the transceiver and to amplify the transmit signal to provide the input signal;
• an antenna coupled to the output port of the integrated filter and electromagnetic coupler assembly;
• and
• a sensor connected to the coupled port of the integrated filter and electromagnetic coupler assembly and configured to detect the coupled signal.

An integrated filter and electromagnetic coupler assembly comprising:

• an input port, an output port, a first coupled port, a second coupled port, a first isolation port, and a second isolation port;
• a termination impedance connected to the first isolation port;
• a filter including a capacitance, a first series inductance, and at least one shunt arm, the first series inductance being connected along a series path between the input port and the output port, the capacitance including at least one series capacitor connected in parallel with the first series inductance;
• the at least one shunt arm being connected between the series path and a ground, and the at least one shunt arm including a shunt capacitance and a shunt inductance connected in series with the shunt capacitance between the series path and the ground;
• a first coupling element positioned physically proximate the first series inductance and extending between the first coupled port and the first isolation port, the first series inductance and the first coupling element being configured to provide a coupled signal at the first coupled port in response to an input signal being received at the input port, the coupled signal being derived from the input signal via inductive coupling between the first series inductance and the first coupling element;
• and
• a second coupling element positioned physically proximate the shunt inductance and extending between the second coupled port and the second isolation port, the second coupling element and the shunt inductance being configured to provide at the second coupled port a harmonic coupled signal via inductive coupling between the shunt inductance and the second coupling element in response to the input signal being received at the input port, the harmonic coupled signal being representative of at least one harmonic of the input signal.