A hearing instrument comprising a microphone for reception of sound and conversion of the received sound into a corresponding first audio signal, a signal processor for processing the first audio signal into a second audio signal compensating a hearing loss of a user of the hearing aid, a speaker connected to an output of the signal processor for converting the second audio signal into an output sound signal, a wireless communication unit connected to the signal processor for wireless communication, the wireless communication unit being configured to inductively transmit and receive an electromagnetic field, the wireless communication unit comprising an oscillator circuitry comprising an antenna resonator and signal control switches, the antenna resonator being configured to emit an electromagnetic field at a first frequency, a driving circuit for the oscillator circuitry, wherein the driving circuit provides a driving circuit output comprising - a first sequence of pulses, the first sequence of pulses having a first phase and a first pulse width, the first pulse width being less than 1/4 of an inverse of the first frequency, and - a second sequence of pulses, the second sequence of pulses having a second phase and a second pulse width, the second pulse width being less than 1/4 of an inverse of the first frequency, the second phase being phase shifted with respect to the first phase, the first phase and the second phase being determined based on the first frequency, wherein the first sequence of pulses and the second sequence of pulses are provided to at least a first signal control switch and a second signal control switch, and wherein the at least first and second signal control switches are configured such that, upon receiving the first sequence of pulses and the second sequence of pulses, an alternating voltage will be supplied to the antenna resonator to thereby excite the antenna resonator. a microphone for reception of sound and conversion of the received sound into a corresponding first audio signal, a signal processor for processing the first audio signal into a second audio signal compensating a hearing loss of a user of the hearing aid, a speaker connected to an output of the signal processor for converting the second audio signal into an output sound signal, a wireless communication unit connected to the signal processor for wireless communication, the wireless communication unit being configured to inductively transmit and receive an electromagnetic field, the wireless communication unit comprising an oscillator circuitry comprising an antenna resonator and signal control switches, the antenna resonator being configured to emit an electromagnetic field at a first frequency, a driving circuit for the oscillator circuitry, wherein the driving circuit provides a driving circuit output comprising - a first sequence of pulses, the first sequence of pulses having a first phase and a first pulse width, the first pulse width being less than 1/4 of an inverse of the first frequency, and - a second sequence of pulses, the second sequence of pulses having a second phase and a second pulse width, the second pulse width being less than 1/4 of an inverse of the first frequency, the second phase being phase shifted with respect to the first phase, the first phase and the second phase being determined based on the first frequency, - a first sequence of pulses, the first sequence of pulses having a first phase and a first pulse width, the first pulse width being less than 1/4 of an inverse of the first frequency, and - a second sequence of pulses, the second sequence of pulses having a second phase and a second pulse width, the second pulse width being less than 1/4 of an inverse of the first frequency, the second phase being phase shifted with respect to the first phase, the first phase and the second phase being determined based on the first frequency, wherein the first sequence of pulses and the second sequence of pulses are provided to at least a first signal control switch and a second signal control switch, and wherein the at least first and second signal control switches are configured such that, upon receiving the first sequence of pulses and the second sequence of pulses, an alternating voltage will be supplied to the antenna resonator to thereby excite the antenna resonator.