A filter arrangement comprises a first terminal that handles duplex radio antenna feeder signals for at least two transceiver modules, a second terminal that handles at least duplex signals for a first transceiver module, a third terminal that outputs a first multi carrier power amplifier system input signal, the input signal representing a transmit signal from the first transceiver module, and a fourth terminal that receives a multi carrier power amplifier system output signal. The output signal includes an amplified representation of the transmit signals from the two transceiver modules. The first and second terminals are connected via first a single filter, the second and third terminals are connected via a second single filter, and the fourth and first terminals are connected via a third single filter.