Synthesizer module, rf transceiver and method therefor

A radio frequency transceiver module comprising at least one synthesizer module arranged to generate at least one timing signal;

• the at least one synthesizer module comprising:
• at least one odd-numbered frequency divider circuit arranged to receive a reference timing signal and to output at least one frequency-divided signal having a frequency equal to 1/M times the frequency of the reference timing signal, where M is an odd-numbered integer;
• a 90° phase-shift component arranged to receive the reference timing signal and to output a 90° phase-shifted form of the reference timing signal;
• and
• a re-timing circuit arranged to:
• receive the at least one frequency-divided signal;
• receive the 90° phase-shifted form of the reference timing signal;
• and
• re-time a set of transitions of the frequency-divided signal to be temporally aligned to transitions of the 90° phase-shifted form of the reference timing signal to generate the at least one timing signal comprising the re-timed transitions of the frequency-divided signal.

A method of generating a timing signal from a reference timing signal;

• the method comprising:
• generating a 90° phase-shifted form of the reference timing signal;
• generating at least one frequency-divided signal having a frequency equal to 1/M times the frequency of the reference timing signal, where M is an odd-numbered integer;
• and
• re-timing a set of transitions of the frequency-divided signal to be temporally aligned to transitions of the 90° phase-shifted form of the reference timing signal to generate the timing signal comprising the re-timed transitions of the frequency-divided signal.