Patent ID: 7885623

Claim:
A frequency tunable arrangement comprising: a tunable oscillator circuit arranged to provide an oscillator signal; and a controllable frequency divider circuit for providing a frequency-divided signal on the basis of the oscillator signal, the frequency-divided signal having a frequency that is equal to the frequency of the oscillator signal divided by a division factor, the controllable frequency divider circuit being arranged to provide any division factor among a set of division factors in which for any division factor a ratio between that division factor and a lower division factor closest thereto, if existing, does not exceed 1.25, wherein the controllable frequency divider circuit comprises a frequency divider subcircuit arranged to provide any integer division factor among a set of integer division factors that ranges from 2 k to 2 k+1 −1, k being an integer greater than 1, wherein the controllable frequency divider circuit further comprises a divide-by-two divider circuit coupled to the frequency divider subcircuit, wherein the divide-by-two divider circuit is configured to switch between a divide-by-two mode and a non-divide mode.