Automatic Gain Control for Received Signal Strength Indication
First Claim
1. An automatic gain control (AGC) circuit, comprising:
- a pre-divider circuit operable to pre-divide an input analog signal according to a pre-divider circuit setting and output a pre-divided analog signal;
a pre-amplifier operable to pre-amplify the pre-divided analog signal and output a pre-amplified analog signal;
a post-divider circuit operable to post-divide the pre-amplified analog signal according to a post-divider circuit setting and output a post-divided analog signal;
an analog-to-digital converter (ADC) operable to convert the post-divided analog signal into a digital data stream; and
logic operable to;
sample the digital data stream;
determine a pre-divider circuit setting and a post-divider circuit setting based on the sampled data stream;
set the pre-divider circuit and the post-divider circuit based on the determined settings; and
generate a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting.
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Accused Products
Abstract
In some implementations, an automatic gain control (AGC) circuit comprises: a pre-divider circuit operable to pre-divide an input signal according to a pre-divider circuit setting and output a pre-divided signal; a pre-amplifier operable to pre-amplify the pre-divided signal and output a pre-amplified signal; a post-divider circuit operable to post-divide the pre-amplified signal according to a post-divider circuit setting; an analog-to-digital converter (ADC) operable to generate a digital data stream from the post-divided signal; logic operable to sample the digital data stream; determine a pre-divider circuit setting and a post-divider circuit setting based on the sampled data stream; set the pre-divider circuit and the post-divider circuit based on the determined settings; and generate a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting.
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Citations
26 Claims
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1. An automatic gain control (AGC) circuit, comprising:
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a pre-divider circuit operable to pre-divide an input analog signal according to a pre-divider circuit setting and output a pre-divided analog signal; a pre-amplifier operable to pre-amplify the pre-divided analog signal and output a pre-amplified analog signal; a post-divider circuit operable to post-divide the pre-amplified analog signal according to a post-divider circuit setting and output a post-divided analog signal; an analog-to-digital converter (ADC) operable to convert the post-divided analog signal into a digital data stream; and logic operable to; sample the digital data stream; determine a pre-divider circuit setting and a post-divider circuit setting based on the sampled data stream; set the pre-divider circuit and the post-divider circuit based on the determined settings; and generate a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of automatic gain control (AGC) performed by an AGC circuit, comprising:
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pre-dividing, by a pre-divider circuit, an input analog signal according to a pre-divider circuit setting and outputting a pre-divided analog signal; pre-amplifying, by a pre-amplifier, the pre-divided analog signal and outputting a pre-amplified analog signal; post-dividing, by a post-divider circuit, the pre-amplified analog signal according to a post-divider circuit setting; generating, by an analog-to-digital converter (ADC), a digital data stream from the post-divided analog signal; sampling the digital data stream; determining a pre-divider circuit setting and a post-divider circuit setting based on the sampled digital data stream; setting the pre-divider circuit and the post-divider circuit based on the determined settings; and generating a received signal strength value based on the pre-divider circuit setting and the post-divider circuit setting. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification