Transceiver for a hearing aid and a method for operating such a transceiver

A hearing aid with a frequency-shift-keying (FSK) transceiver having a resonant circuit comprising a transceiver inductance (L1), said resonant circuit having a resonance frequency FR, and a transfer function where gain and phase are frequency dependent, wherein the transceiver comprises:

• an FSK modulator receiving a data stream, and in response thereto outputting an FSK modulated signal to the resonant circuit for wireless transmission;
• a controller monitoring the data stream received by the FSK modulator;
• and
• a phase equalizer unit controlled by the controller for applying a phase correction to the FSK modulated signal for substantially equalizing the phase distortion introduced by the frequency dependent resonant circuit.

A method of operating a frequency-shift-keying (FSK) transceiver having a resonant circuit comprising a transceiver inductance (L1), said resonant circuit having a resonance frequency FR, and a transfer function where gain and phase are frequency dependent, said method including:

• applying a data stream to an FSK modulator, which in response thereto outputs an FSK modulated signal to the resonant circuit for wireless transmission;
• monitoring the data stream applied to the FSK modulator for detecting subsequent data values;
• and
• applying a predetermined phase shift to the FSK modulated signal for substantially equalizing the phase distortion introduced by the frequency dependent resonant circuit.