Integrated circuit having frequency dependent noise avoidance
AssigneeBroadcom Corporation
InventorAHMADREZA (REZA) ROFOUGARAN
Life of this patent
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Abstract
An integrated circuit includes first, second and third circuits, a clock module and a rate adapting module. The first circuit causes frequency dependent noise and is clocked based on a clock signal. The second circuit is rate dependent and is clocked based on an operation dependent clock signal. The third circuit is susceptible to adverse performance when the frequency dependent noise has a component within a given frequency range. The clock module generates a clock signal having a rate such that frequency dependent noise components associated with the clock signal are outside the given frequency range. The rate adapting module is coupled to produce the operation dependent clock signal from the clock signal.
Claims19
An integrated circuit, comprising:
- a first circuit that causes frequency dependent noise, wherein the first circuit is clocked based on a first clock signal;
- a second circuit that is susceptible to adverse performance when the frequency dependent noise has a component within a given frequency range;
- and
- a clock module that generates the first clock signal having a rate such that frequency dependent noise components associated with the first clock signal are outside the given frequency range.
A radio frequency integrated circuit (RFIC) comprises:
- a low noise amplifier coupled to amplify an inbound radio frequency (RF) signal to produce an amplified RF signal;
- a down conversion module coupled to convert the amplified RF signal to a down converted signal based on a local oscillation;
- an analog to digital conversion (ADC) module coupled to convert the down converted signal into a digital signal, wherein the ADC conversion module is clocked by a first clock signal;
- a baseband processing module coupled to convert the digital signal into inbound data;
- and
- a clock module coupled to produce the first clock signal, wherein a rate of the first clock signal is set such that frequency dependent noise components associated with the first clock signal are outside a frequency band associated with the inbound RF signal.
A method for operating a radio frequency integrated circuit (RFIC), comprising:
- clocking a first circuit that causes frequency dependent noise based on a first clock signal;
- providing a second circuit that is susceptible to adverse performance when the frequency dependent noise has a component within a given frequency range;
- and
- generating the first clock signal having a rate such that frequency dependent noise components associated with the first clock signal are outside the given frequency range.
Dependencies are inferred from the claim text.