Low power signal generator
AssigneeDialog Semiconductor GmbH
InventorMichail Papamichail
Life of this patent
Estimating the term…
Abstract
A low power signal generator and a method for generating at least one source signal based on a reference signal having a reference frequency is presented. The signal generator has a divider circuit having a resonant frequency. The generator has an adjuster adapted to adjust the resonant frequency. The divider circuit has an input to receive the reference signal and an output for providing the source signal. The divider circuit is adapted to divide the reference frequency of the reference signal by a coefficient, such that the source signal has a source frequency that is less than the reference frequency.
Claims18
A signal generator for generating at least one source signal based on a reference signal from a reference generator;
- the signal generator comprising
- a divider circuit having a resonant frequency;
- and
- an adjuster adapted to generate a control signal to adjust the resonant frequency of the divider circuit;
- wherein the divider circuit has a first input to receive the reference signal, a second input to receive the control signal and an output for providing the source signal, the divider circuit being adapted to divide a reference frequency of the reference signal by a coefficient, such that the source signal has a source frequency that is less than the reference frequency,
- wherein the divider circuit is adapted to perform frequency division for a minimum amplitude value of the reference signal;
- and wherein the adjuster is adapted to adjust the resonant frequency reduce the minimum amplitude value.
A transceiver comprising
- an antenna coupled to a receiver path and a transmitter path via an input-output interface;
- a reference generator for generating a reference signal having a reference frequency;
- and
- a signal generator for generating at least one source signal based on the reference signal;
- the signal generator comprising a first divider circuit having a first resonant frequency;
- and a first adjuster adapted to generate a first control signal to adjust the first resonant frequency of the first divider circuit;
- wherein the first divider circuit has a first input to receive the reference signal, a second input to receive the first control signal and an output for providing the source signal, the first divider circuit being adapted to divide the reference frequency of the reference signal by a first coefficient, such that the source signal has a source frequency that is less than the reference frequency, wherein the first divider circuit is adapted to perform frequency division for a minimum amplitude value of the reference signal;
- and wherein the first adjuster is adapted to adjust the first resonant frequency to reduce the minimum amplitude value.
A method of generating a source signal, the method comprising
- providing a reference signal having a reference frequency;
- providing an adjuster to generate a control signal;
- providing a divider circuit having a resonant frequency, wherein the divider circuit has a first input to receive the reference signal, a second input to receive the control signal, and an output for providing the source signal,
- feeding the reference signal to the divider circuit to obtain the source signal, such that the source signal has a source frequency that is less than the reference frequency;
- and
- adjusting the resonant frequency of the divider circuit using the control signal;
- wherein the divider circuit is adapted to perform frequency division for a minimum amplitude value of the reference signal;
- and wherein the method comprises adjusting the resonant frequency to reduce the minimum amplitude value.
Dependencies are inferred from the claim text.