Patent ID: 9197403
Filing Date: 2015-11-24
Classification: H03C,H03L,H04L

Abstract:
1. An electronic device, the device comprising a calibration arrangement for controlling a frequency characteristic of a circuit, the circuit comprising: a phase comparator having a first input for receiving a feedback signal and a second input for receiving a reference frequency and a phase comparator output for generating a phase difference signal; a voltage controlled oscillator having a first control input coupled to receive the phase difference signal and a second control input for receiving a second control signal, and an oscillator output for outputting an oscillator signal at an oscillation frequency controlled by the first and second control inputs; a divider having a first input coupled to receive the oscillation signal and an output for generating the feedback signal by dividing the oscillation signal by a divisor, the divisor of the divider being programmed based on a divisor control signal received via a divisor input; and a modulation unit having a modulation input for receiving a modulation signal, a first modulation output to provide the second control signal, and a second modulation output to provide the divisor control signal, and a change of the modulation signal generates a predefined change of the second control signal and a change of the divisor via the divisor control signal that is proportional to said predefined change; and the calibration arrangement comprising: