17894065. Differential Mode and Common Mode Distortion Cancellation Circuitry simplified abstract (Apple Inc.)
Differential Mode and Common Mode Distortion Cancellation Circuitry
Organization Name
Inventor(s)
Omar E Elaasar of San Diego CA (US)
Differential Mode and Common Mode Distortion Cancellation Circuitry - A simplified explanation of the abstract
This abstract first appeared for US patent application 17894065 titled 'Differential Mode and Common Mode Distortion Cancellation Circuitry
Simplified Explanation
- An electronic device with wireless circuitry includes one or more differential circuits. - A differential circuit consists of first and second input transistors, first and second degeneration components, and first and second distortion cancellation transistors cross-coupled with the input transistors. - The first distortion cancellation transistor cancels out differential mode and common mode harmonic distortion currents in the second input transistor. - The second distortion cancellation transistor cancels out differential mode and common mode harmonic distortion currents in the first input transistor.
Potential Applications
- Wireless communication devices
- Audio amplifiers
- Signal processing equipment
Problems Solved
- Reduction of harmonic distortion in electronic devices
- Improvement in signal quality and accuracy
Benefits
- Enhanced performance of wireless circuits
- Improved audio quality in amplifiers
- Better signal processing capabilities
Original Abstract Submitted
An electronic device may include wireless circuitry having one or more differential circuits. A differential circuit can include first and second input transistors, first and second degeneration components, and first and second distortion cancellation transistors cross-coupled with the first and second input transistors. The first distortion cancellation transistor can be configured to sense a voltage at the first input transistor and to produce corresponding currents for cancelling a differential mode harmonic distortion current flowing through the second input transistor and for cancelling a common mode harmonic distortion current flowing through the first input transistor. The second distortion cancellation transistor can be configured to sense a voltage at the second input transistor and to produce corresponding currents for cancelling a differential mode harmonic distortion current flowing through the first input transistor and for cancelling a common mode harmonic distortion current flowing through the second input transistor.
