Patent US20030144697A1 successfully refreshed from Google Patents.
US5263196A
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US
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Method and apparatus for compensation of imbalance in zero-if downconverters
Assignee: NXP USA Inc
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Filing: 1990-11-19
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Granted: 1993-11-16
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Expires: 2010-11-19
Abstract
Abstract To compensate the audio distortion resulting from amplitude and phase imbalance in the quadrature oscillator (103) and mixers (105, 115) in zero-IF downconverters (203), a balancing action is required. An apparatus for distortion compensation compensates for the amplitude and phase imbalance to reduce audio distortion. This is accomplished by determining (309) two gain values, which are combined (217, 227, 229) with the in-phase and quadrature components of the zero-IF downconverter (203) to compensate for the imbalance.
Inventors
- 👤 Steven C. Jasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:33
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; H03D1/2245; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/30; H04L; H04L5/00; H04L5/02; H04L5/06; H03D3/00; H03D3/006; H03D3/007
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
140 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said gain control value, yielding a real squared sum; and means for accumulating said real squared sum, providing said gain control value.
Claim 2
Dependent Claim
140 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said gain control value, yielding a real squared sum; and means for accumulating said real squared sum, providing said gain control value.
Claim 3
Dependent Claim
140 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said second means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said phase control value.
Claim 4
Dependent Claim
140 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said second means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said phase control value.
Claim 5
Dependent Claim
306 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises: means for mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; means for scaling the first mixed real part by a first loop gain constant; means for adding scaled first mixed real part to said gain control value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said gain control value; and wherein said second means for processing further comprises: means for mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; means for mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; means for mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; means for scaling the second mixed imaginary part by a second loop gain constant; means for adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said phase control value.
Claim 6
Dependent Claim
306 words
A distortion compensator for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising: a first means for processing the real and imaginary signal components to produce a gain control value; a second means for processing the real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises: means for mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; means for scaling the first mixed real part by a first loop gain constant; means for adding scaled first mixed real part to said gain control value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said gain control value; and wherein said second means for processing further comprises: means for mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; means for mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; means for mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; means for scaling the second mixed imaginary part by a second loop gain constant; means for adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said phase control value.
Claim 7
Independent Claim
138 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter, wherein said first step of processing further comprises the steps of: squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; scaling the squared real part by a first loop gain constant; adding said scaled squared real part to said gain control value, yielding a real squared sum; and accumulating said real squared sum, providing said gain control value.
Claim 8
Independent Claim
138 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter, wherein said first step of processing further comprises the steps of: squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; scaling the squared real part by a first loop gain constant; adding said scaled squared real part to said gain control value, yielding a real squared sum; and accumulating said real squared sum, providing said gain control value.
Claim 9
Independent Claim
138 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter, wherein said second step of processing further comprises the steps of: squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; scaling the squared imaginary part by a second loop gain constant; adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and accumulating said imaginary squared sum, providing said phase control value.
Claim 10
Independent Claim
138 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter, wherein said second step of processing further comprises the steps of: squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; scaling the squared imaginary part by a second loop gain constant; adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and accumulating said imaginary squared sum, providing said phase control value.
Claim 11
Independent Claim
292 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter. wherein said first step of processing further comprises the steps of: mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; scaling the first mixed real part by a first loop gain constant; adding said scaled first mixed real part to said gain control value, yielding a real mixed sum; and accumulating said real mixed sum, providing said gain control value; and wherein said second step of processing further comprises the steps of; mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; scaling the second mixed imaginary part by a second loop gain constant; adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and accumulating said imaginary mixed sum, providing said phase control value.
Claim 12
Independent Claim
292 words
A method of distortion compensation for phase and amplitude imbalance in zero-IF downconverters processing real and imaginary signal components, comprising the steps of: first processing the real and imaginary signal components to produce a gain control value; second processing the real and imaginary signal components to produce a phase control value; and coupling, responsive to said steps of processing, said gain and phase control values to the zero-IF downconverter. wherein said first step of processing further comprises the steps of: mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; scaling the first mixed real part by a first loop gain constant; adding said scaled first mixed real part to said gain control value, yielding a real mixed sum; and accumulating said real mixed sum, providing said gain control value; and wherein said second step of processing further comprises the steps of; mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; scaling the second mixed imaginary part by a second loop gain constant; adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and accumulating said imaginary mixed sum, providing said phase control value.
Claim 13
Dependent Claim
94 words
A distortion compensator for phase and amplitude imbalance in a zero-IF downconverter processing real and imaginary signal components, comprising: means for multiplying the real signal component by a first gain value, producing a corrected real component; means for multiplying the real signal component by a second gain value, yielding a scaled real component; means for adding said scaled real component to the imaginary signal component, providing a compensated imaginary component; and means for processing said corrected real component and said compensated imaginary component to drive said first gain value and said second gain value.
Claim 14
Dependent Claim
94 words
A distortion compensator for phase and amplitude imbalance in a zero-IF downconverter processing real and imaginary signal components, comprising: means for multiplying the real signal component by a first gain value, producing a corrected real component; means for multiplying the real signal component by a second gain value, yielding a scaled real component; means for adding said scaled real component to the imaginary signal component, providing a compensated imaginary component; and means for processing said corrected real component and said compensated imaginary component to drive said first gain value and said second gain value.
Claim 15
Dependent Claim
81 words
The distortion compensator of claim 7 wherein said means for processing further comprises: means for squaring a sum of said corrected component and said compensated imaginary component, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said first gain value, yielding a real squared sum; and means for accumulating said real squared sum, providing said first gain value.
Claim 16
Dependent Claim
82 words
The distortion compensator of claim 7 wherein said means for processing further comprises: means for squaring a sum of said corrected real component and said compensated imaginary component, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said second gain value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said second gain value.
Claim 17
Dependent Claim
122 words
The distortion compensator of claim 7 wherein said means for processing further comprises: means for mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; means for scaling the mixed real part by a first loop gain constant; means for adding said scaled mixed real part to said first gain value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said first gain value.
Claim 18
Dependent Claim
122 words
The distortion compensator of claim 7 wherein said means for processing further comprises: means for mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; means for scaling the mixed imaginary part by a second loop gain constant; means for adding said scaled mixed imaginary part to said second gain value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said second gain value.
Claim 19
Independent Claim
91 words
A method of distortion compensation for phase and amplitude imbalance in a zero-IF downconverter processing real and imaginary signal components, comprising the steps of: multiplying the real signal component by a first gain value, producing a corrected real component; multiplying the real signal component by a second gain value, yielding a scaled real component; adding said scaled real component to the imaginary signal component, providing a compensated imaginary component; and processing said corrected real component and said compensated imaginary component to derive said first gain value and said second gain value.
Claim 20
Independent Claim
91 words
A method of distortion compensation for phase and amplitude imbalance in a zero-IF downconverter processing real and imaginary signal components, comprising the steps of: multiplying the real signal component by a first gain value, producing a corrected real component; multiplying the real signal component by a second gain value, yielding a scaled real component; adding said scaled real component to the imaginary signal component, providing a compensated imaginary component; and processing said corrected real component and said compensated imaginary component to derive said first gain value and said second gain value.
Claim 21
Dependent Claim
79 words
The method of distortion compensation of claim 12 wherein said step of processing further comprises the steps of: squaring a sum of said corrected real component and said compensated imaginary component producing a squared real part and a squared imaginary part; scaling the squared real part by a first loop gain constant; adding said scaled squared real part to said first gain value, yielding a real squared sum; and accumulating said real squared sum, providing said first gain value.
Claim 22
Dependent Claim
79 words
The method of distortion compensation of claim 12 wherein said step of processing further comprises the steps of: squaring a sum of said corrected real component and said compensated imaginary component producing a squared real part and a squared imaginary part; scaling the squared imaginary part by a second loop gain constant; adding said scaled squared imaginary part to said second gain value, yielding an imaginary squared sum; and accumulating said imaginary squared sum, providing said second gain value.
Claim 23
Dependent Claim
115 words
The method of distortion compensation of claim 12 wherein said step of processing further comprises the steps of: mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; scaling the mixed real part by a first loop gain constant; adding said scaled mixed real part to said first gain value, yielding a real mixed sum; and accumulating said real mixed sum, providing said first gain value.
Claim 24
Dependent Claim
115 words
The method of distortion compensation of claim 12 wherein said step of processing further comprises the steps of: mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; scaling the mixed imaginary part by a second loop gain constant; adding said scaled mixed imaginary part to said second gain value, yielding an imaginary mixed sum; and accumulating said imaginary mixed sum, providing said second gain value.
Claim 25
Dependent Claim
144 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises; means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said gain control value, yielding a real squared sum; and means for accumulating said real squared sum, providing said gain control value.
Claim 26
Dependent Claim
144 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said first means for processing further comprises; means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said gain control value, yielding a real squared sum; and means for accumulating said real squared sum, providing said gain control value.
Claim 27
Dependent Claim
144 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said second means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said phase control value.
Claim 28
Dependent Claim
144 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter, wherein said second means for processing further comprises: means for squaring a sum of the real and imaginary signal components, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said phase control value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said phase control value.
Claim 29
Dependent Claim
311 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter; wherein said first means for processing further comprises: means for mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; means for scaling the first mixed real part by a first loop gain constant; means for adding said scaled first mixed real part to said gain control value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said gain control value; and wherein said second means for processing further comprises; means for mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; means for mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; means for mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; means for scaling the second mixed imaginary part by a second loop gain constant; means for adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said phase control value.
Claim 30
Dependent Claim
311 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; a first means for processing said real and imaginary signal components to produce a gain control value; a second means for processing said real and imaginary signal components to produce a phase control value; and means for coupling said gain and phase control values to the zero-IF downconverter; wherein said first means for processing further comprises: means for mixing the real and imaginary signal components with a first frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said first frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a first mixed real part and a first mixed imaginary part; means for scaling the first mixed real part by a first loop gain constant; means for adding said scaled first mixed real part to said gain control value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said gain control value; and wherein said second means for processing further comprises; means for mixing the real and imaginary signal components with a second frequency carrier, producing a third mixed signal; means for mixing the real and imaginary signal components with a negative of said second frequency carrier, producing a fourth mixed signal; means for mixing said third mixed signal with said fourth mixed signal, resulting in a second mixed real part and a second mixed imaginary part; means for scaling the second mixed imaginary part by a second loop gain constant; means for adding said scaled second mixed imaginary part to said phase control value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said phase control value.
Claim 31
Dependent Claim
97 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; means for multiplying said real signal component by a first gain value, producing a corrected real component; means for multiplying said real signal component by a second gain value, yielding a scaled real component; means for adding said scaled real component to said imaginary signal component, providing a compensated imaginary component; and means for processing said corrected real component and said compensated imaginary component to derive said first gain value and said second gain value.
Claim 32
Dependent Claim
97 words
A radio receiver employing a zero-IF downconverter, comprising: means for converting a received signal into a real and an imaginary signal component; means for multiplying said real signal component by a first gain value, producing a corrected real component; means for multiplying said real signal component by a second gain value, yielding a scaled real component; means for adding said scaled real component to said imaginary signal component, providing a compensated imaginary component; and means for processing said corrected real component and said compensated imaginary component to derive said first gain value and said second gain value.
Claim 33
Dependent Claim
82 words
The radio receiver of claim 20 wherein said means for processing further comprises: means for squaring a sum of said corrected real component and said compensated imaginary component, producing a squared real part and a squared imaginary part; means for scaling the squared real part by a first loop gain constant; means for adding said scaled squared real part to said first gain value, yielding a real squared sum; and means for accumulating said real squared sum, providing said first gain value.
Claim 34
Dependent Claim
82 words
The radio receiver of claim 20 wherein said means for processing further comprises: means for squaring a sum of said corrected real component and said compensated imaginary component, producing a squared real part and a squared imaginary part; means for scaling the squared imaginary part by a second loop gain constant; means for adding said scaled squared imaginary part to said second gain value, yielding an imaginary squared sum; and means for accumulating said imaginary squared sum, providing said second gain value.
Claim 35
Dependent Claim
122 words
The radio receiver of claim 20 wherein said means for processing further comprises: means for mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; means for scaling the mixed real part by a first loop gain constant; means for adding said scaled mixed real part to said first gain value, yielding a real mixed sum; and means for accumulating said real mixed sum, providing said first gain value.
Claim 36
Dependent Claim
122 words
The radio receiver of claim 20 wherein said means for processing further comprises: means for mixing said corrected real component and said compensated imaginary component with a frequency carrier, producing a first mixed signal; means for mixing the real and imaginary signal components with a negative of said frequency carrier, producing a second mixed signal; means for mixing said first mixed signal with said second mixed signal, resulting in a mixed real part and a mixed imaginary part; means for scaling the mixed imaginary part by a second loop gain constant; means for adding said scaled mixed imaginary part to said second gain value, yielding an imaginary mixed sum; and means for accumulating said imaginary mixed sum, providing said second gain value.
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