Systems and method for a highly integrated, multi-mode tuner
First Claim
1. A method for adjusting the signal to noise ratio of a receiver, comprising:
- measuring the peak power for an RF signal;
determining, based on the measured peak power, whether the RF signal power is within a desired operating range;
adjusting an RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating range;
measuring a peak power for an IF signal;
determining based on the measured peak power, whether the IF signal power is within a desired operating range; and
adjusting an IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range.
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Accused Products
Abstract
A method for adjusting the signal to noise ratio of a receiver comprises measuring the peak power for an RF signal and determining, based on the measured peak power, whether the RF signal power is within a desired operating range. The method further includes adjusting an RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating rang. The method further comprises measuring a peak power foe an IF signal, determining based on the measured peak power, whether the IF signal power is within a desired operating range, and adjusting an IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range.
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Citations
25 Claims
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1. A method for adjusting the signal to noise ratio of a receiver, comprising:
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measuring the peak power for an RF signal;
determining, based on the measured peak power, whether the RF signal power is within a desired operating range;
adjusting an RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating range;
measuring a peak power for an IF signal;
determining based on the measured peak power, whether the IF signal power is within a desired operating range; and
adjusting an IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A receiver including a tuner and a processor coupled with the receiver, the tuner comprising:
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a RF section, the RF section including a RF AGC and a RF peak detector; and
an IF section, the IF section comprising an IF AGC and an IF peak detector, the processor configured to;
determine, using the RF peak detector, whether an RF signal power for the RF section is within a desired operating range;
adjust the RF AGC in order to adjust the RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating range;
determine, using IF peak detector, whether an IF signal power for the IF section is within a desired operating range; and
adjust the IF AGC in order to adjust the IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for adjusting the bandwidth of a receiver, comprising:
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determining whether a signal to noise ratio for a signal output by the receiver is within a desired operating range;
when it is determined that the signal to noise ratio is not within a desired operating range, determining whether adjacent channel interference is present in the signal;
narrowing the bandwidth of the receiver when it is determined that adjacent channel interference is present;
when it is determined that adjacent channel interference is not present, determining whether there is group delay distortion; and
increasing the bandwidth of the receiver when it is determined that the group delay distortion is present. - View Dependent Claims (22)
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23. A tuner including a receiver and a processor coupled with the receiver, the receiver comprising:
an image rejection block, the processor configured to;
determine whether a signal to noise ratio for a signal output by the receiver is within a desired operating range;
when it is determined that the signal to noise ratio is not within a desired operating range, determine whether adjacent channel interference is present in the signal;
control the image rejection block so as to narrow the bandwidth of the receiver when it is determined that adjacent channel interference is present;
when it is determined that adjacent channel interference is not present, determine whether there is group delay distortion; and
control the image rejection block so as to increase the bandwidth of the receiver when it is determined that the group delay distortion is present. - View Dependent Claims (24, 25)
Specification