A communication device, comprising: a first antenna; a second antenna; a tunable compensation circuit; a first circuit coupled to the first antenna; a second circuit coupled to the second antenna; and a controller coupled to the tunable compensation circuit, and the first and second circuits (1802, 1808), wherein the controller is configured to: cause a transmission of a reference signal by the first antenna; receive a signal received by the second antenna, wherein the signal is associated with the reference signal transmitted by the first antenna; determine from the received signal one or more compensation parameters; and tune the tunable compensation circuit according to the one or more compensation parameters, wherein the one or more compensation parameters set a variable impedance or variable circuit configuration of the tunable compensation circuit to reduce the mutual coupling between the first and second antennas; wherein the tunable compensation circuit comprises a parasitic antenna coupled to a tunable reactive circuit comprising one or more tunable reactive elements for reducing the mutual coupling between the first and second antennas, and wherein the controller is configured to control the tunable reactive circuit with the one or more compensation parameters to shift a resonant frequency of the parasitic antenna in accordance with an operating frequency of the first and second antennas to reduce the mutual coupling between the first and second antennas by absorbing radiation from the first and/or second antenna. a first antenna; a second antenna; a tunable compensation circuit; a first circuit coupled to the first antenna; a second circuit coupled to the second antenna; and a controller coupled to the tunable compensation circuit, and the first and second circuits (1802, 1808), wherein the controller is configured to: cause a transmission of a reference signal by the first antenna; receive a signal received by the second antenna, wherein the signal is associated with the reference signal transmitted by the first antenna; determine from the received signal one or more compensation parameters; and tune the tunable compensation circuit according to the one or more compensation parameters, wherein the one or more compensation parameters set a variable impedance or variable circuit configuration of the tunable compensation circuit to reduce the mutual coupling between the first and second antennas; wherein the tunable compensation circuit comprises a parasitic antenna coupled to a tunable reactive circuit comprising one or more tunable reactive elements for reducing the mutual coupling between the first and second antennas, and wherein the controller is configured to control the tunable reactive circuit with the one or more compensation parameters to shift a resonant frequency of the parasitic antenna in accordance with an operating frequency of the first and second antennas to reduce the mutual coupling between the first and second antennas by absorbing radiation from the first and/or second antenna. cause a transmission of a reference signal by the first antenna; receive a signal received by the second antenna, wherein the signal is associated with the reference signal transmitted by the first antenna; determine from the received signal one or more compensation parameters; and tune the tunable compensation circuit according to the one or more compensation parameters, wherein the one or more compensation parameters set a variable impedance or variable circuit configuration of the tunable compensation circuit to reduce the mutual coupling between the first and second antennas; wherein the tunable compensation circuit comprises a parasitic antenna coupled to a tunable reactive circuit comprising one or more tunable reactive elements for reducing the mutual coupling between the first and second antennas, and wherein the controller is configured to control the tunable reactive circuit with the one or more compensation parameters to shift a resonant frequency of the parasitic antenna in accordance with an operating frequency of the first and second antennas to reduce the mutual coupling between the first and second antennas by absorbing radiation from the first and/or second antenna.