A transmitter for reducing spectral regrowth of a phase modulated signal to be transmitted comprising: a monitoring circuit adapted to generate in-phase and quadrature components for monitoring phase transitions of in-phase and quadrature components of an input phase modulated signal, said monitoring circuit further adapted to serially provide said in-phase and quadrature components to first and second digital-to-analog converters respectively; the first and second digital-to-analog converters being adapted to process said in-phase and quadrature components and pass them to first and second filters respectively; the first and second filters, respectively being provided downstream from said monitoring circuit for generating a filtered phase modulated signal within an allocated bandwidth; a transmit gain controller being provided downstream from said filters adapted to adjust the amplitude of the filtered phase modulated signal based on a dynamic reference envelope control signal; and a control circuit cooperating with said monitoring circuit and said transmit gain controller for generating the dynamic reference envelope control signal so that the effect of phase transitions spectral regrowth is reduced in the filtered phase modulated signal and so that the filtered phase modulated signal remains within the allocated bandwidth, wherein said control circuit is configured to adjust the dynamic reference envelope control signal according to a profile comprising at least one of nominal and suppressed amplitude values, said profile being based on a modulation type and data rate of the filtered phase modulated signal and comprises at least one of a duration of the suppressed amplitude value, and a delay corresponding to generation of the suppressed amplitude value by said transmit gain controller after detection of a phase transition by said monitoring circuit; said nominal value corresponding to a desired transmit gain control reference value, and said suppressed value being lower than said nominal value and corresponding to a transmit gain control reference value applied during phase transition. a monitoring circuit adapted to generate in-phase and quadrature components for monitoring phase transitions of in-phase and quadrature components of an input phase modulated signal, said monitoring circuit further adapted to serially provide said in-phase and quadrature components to first and second digital-to-analog converters respectively; the first and second digital-to-analog converters being adapted to process said in-phase and quadrature components and pass them to first and second filters respectively; the first and second filters, respectively being provided downstream from said monitoring circuit for generating a filtered phase modulated signal within an allocated bandwidth; a transmit gain controller being provided downstream from said filters adapted to adjust the amplitude of the filtered phase modulated signal based on a dynamic reference envelope control signal; and a control circuit cooperating with said monitoring circuit and said transmit gain controller for generating the dynamic reference envelope control signal so that the effect of phase transitions spectral regrowth is reduced in the filtered phase modulated signal and so that the filtered phase modulated signal remains within the allocated bandwidth, wherein said control circuit is configured to adjust the dynamic reference envelope control signal according to a profile comprising at least one of nominal and suppressed amplitude values, said profile being based on a modulation type and data rate of the filtered phase modulated signal and comprises at least one of a duration of the suppressed amplitude value, and a delay corresponding to generation of the suppressed amplitude value by said transmit gain controller after detection of a phase transition by said monitoring circuit; said nominal value corresponding to a desired transmit gain control reference value, and said suppressed value being lower than said nominal value and corresponding to a transmit gain control reference value applied during phase transition.