An integrated circuit comprising: a first amplifier arrangement having a first amplifier output; first impedance matching circuitry coupled between the first amplifier output and a first output of the integrated circuit, wherein the first impedance matching circuitry comprises: a first inductive element (122, 222) coupled between a first node and the first output (118, 218), the first node being coupled to the first amplifier output; a second inductive element (124, 224) coupled to the first node; and a first capacitive element (126, 226) coupled between the second inductive element (124, 224) and a ground reference voltage node, such that the second inductive element (124, 224) and the first capacitive element (126, 226) are configured electrically in series between the first node and the ground reference voltage node; whereby the first impedance matching circuitry is configured to act as a high pass impedance matching circuit providing a desired impedance at the first output (118, 218); a second amplifier arrangement having a second amplifier output; and second impedance matching circuitry coupled between the second amplifier output and a second output of the integrated circuit, wherein a topology of the second impedance matching circuitry and a topology of the first impedance matching circuitry are different, wherein the second impedance matching circuitry comprises a low-pass impedance matching circuit topology, and wherein the first impedance matching circuitry causes a phase of the signal at the first output of the integrated circuit to be shifted by 90 degrees relative to the signal at the first amplifier output, and the second impedance matching circuitry causes a phase of the signal at the second output of the integrated circuit to be shifted by 180 degrees relative to the signal at the second amplifier output. a first amplifier arrangement having a first amplifier output; first impedance matching circuitry coupled between the first amplifier output and a first output of the integrated circuit, wherein the first impedance matching circuitry comprises: a first inductive element (122, 222) coupled between a first node and the first output (118, 218), the first node being coupled to the first amplifier output; a second inductive element (124, 224) coupled to the first node; and a first capacitive element (126, 226) coupled between the second inductive element (124, 224) and a ground reference voltage node, such that the second inductive element (124, 224) and the first capacitive element (126, 226) are configured electrically in series between the first node and the ground reference voltage node; whereby the first impedance matching circuitry is configured to act as a high pass impedance matching circuit providing a desired impedance at the first output (118, 218); a first inductive element (122, 222) coupled between a first node and the first output (118, 218), the first node being coupled to the first amplifier output; a second inductive element (124, 224) coupled to the first node; and a first capacitive element (126, 226) coupled between the second inductive element (124, 224) and a ground reference voltage node, such that the second inductive element (124, 224) and the first capacitive element (126, 226) are configured electrically in series between the first node and the ground reference voltage node; whereby the first impedance matching circuitry is configured to act as a high pass impedance matching circuit providing a desired impedance at the first output (118, 218); a second amplifier arrangement having a second amplifier output; and second impedance matching circuitry coupled between the second amplifier output and a second output of the integrated circuit, wherein a topology of the second impedance matching circuitry and a topology of the first impedance matching circuitry are different, wherein the second impedance matching circuitry comprises a low-pass impedance matching circuit topology, and wherein the first impedance matching circuitry causes a phase of the signal at the first output of the integrated circuit to be shifted by 90 degrees relative to the signal at the first amplifier output, and the second impedance matching circuitry causes a phase of the signal at the second output of the integrated circuit to be shifted by 180 degrees relative to the signal at the second amplifier output.