A transceiver (200, 300, 400, 500, 600, 700, 800, 900, 1402, 1500, 1600, 1700) suitable to frequency duplex division communication comprising a transmitter (202, 302, 402, 502, 602, 702, 802, 902), wherein the transmitter (202, 302, 402, 502, 602, 702, 802, 902) comprises a power amplifier (208, 308, 408, 1508, 1608, 1708); a receiver (204, 304, 404, 504, 604, 704, 804, 904); an auxiliary power amplifier (212, 312, 412, 512, 612, 712, 812, 912, 1512, 1612, 1712) which is arranged to provide a controllable phase shift and gain output; a first filter (209, 309, 409, 509, 609, 709, 809, 909) arranged at an output of the power amplifier (208, 308, 408, 1508, 1608, 1708) arranged to attenuate frequencies at a receiving frequency of the receiver (204, 304, 404, 504, 604, 704, 804, 904); a second filter (213, 313, 413, 513, 613, 713, 813, 913) at an output of the auxiliary power amplifier (212, 312, 412, 512, 612, 712, 812, 912, 1512, 1612, 1712) arranged to attenuate frequencies at a receiving frequency of the receiver (204, 304, 404, 504, 604, 704, 804, 904); a signal transmission arrangement arranged to transmit signals provided from the transmitter (202, 302, 402, 502, 602, 702, 802, 902) through its power amplifier (208, 308, 408, 1508, 1608, 1708) to a radio frequency, RF, connecting point (205, 305, 405, 505, 605, 705, 805, 905) via the first filter (209, 309, 409, 509, 609, 709, 809, 909), receive signals from the RF connecting point (205, 305, 405, 505, 605, 705, 805, 905) and provide the signals to the receiver (204, 304, 404, 504, 604, 704, 804, 904) via an impedance (216, 316, 416, 421, 516, 521, 615, 715, 815, 921), and provide signals from the auxiliary amplifier (212, 312, 412, 512, 612, 712, 812, 912, 1512, 1612, 1712) towards an input of the receiver (204, 304, 404, 504, 604, 704, 804, 904) via the second filter (213, 313, 413, 513, 613, 713, 813, 913); and a controller (218, 318, 418), wherein the controller (218, 318, 418) is arranged to control the auxiliary power amplifier (212, 312, 412, 512, 612, 712, 812, 912, 1512, 1612, 1712) output to provide a signal that has a phase and amplitude in relation to the output of the power amplifier (208, 308, 408, 1508, 1608, 1708) of the transmitter (202, 302, 402, 502, 602, 702, 802, 902) such that the transmitter contribution to the signal at the input of the receiver (204, 304, 404, 504, 604, 704, 804, 904) is suppressed. transmit signals provided from the transmitter (202, 302, 402, 502, 602, 702, 802, 902) through its power amplifier (208, 308, 408, 1508, 1608, 1708) to a radio frequency, RF, connecting point (205, 305, 405, 505, 605, 705, 805, 905) via the first filter (209, 309, 409, 509, 609, 709, 809, 909), receive signals from the RF connecting point (205, 305, 405, 505, 605, 705, 805, 905) and provide the signals to the receiver (204, 304, 404, 504, 604, 704, 804, 904) via an impedance (216, 316, 416, 421, 516, 521, 615, 715, 815, 921), and provide signals from the auxiliary amplifier (212, 312, 412, 512, 612, 712, 812, 912, 1512, 1612, 1712) towards an input of the receiver (204, 304, 404, 504, 604, 704, 804, 904) via the second filter (213, 313, 413, 513, 613, 713, 813, 913); and