Method and apparatus for reducing DC offsets in communication systems using universal frequency translation technology
First Claim
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1. An apparatus for down-converting an electromagnetic signal and reducing DC offset voltages and re-radiation, comprising:
- a first UFD module that receives an input signal, wherein said first UFD module down-converts said input signal according to a first control signal and outputs a first down-converted signal;
a second UFD module that receives said input signal, wherein said second UFD module down-converts said input signal according to a second control signal and outputs a second down-converted signal; and
a first subtractor module that subtracts said second down-converted signal from said first down-converted signal and outputs a first channel down-converted signal.
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Abstract
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also described herein.
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Citations
1 Claim
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1. An apparatus for down-converting an electromagnetic signal and reducing DC offset voltages and re-radiation, comprising:
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a first UFD module that receives an input signal, wherein said first UFD module down-converts said input signal according to a first control signal and outputs a first down-converted signal;
a second UFD module that receives said input signal, wherein said second UFD module down-converts said input signal according to a second control signal and outputs a second down-converted signal; and
a first subtractor module that subtracts said second down-converted signal from said first down-converted signal and outputs a first channel down-converted signal.
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Specification