17894062. Differential Mode and Common Mode Distortion Cancellation Circuitry simplified abstract (Apple Inc.)
Contents
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 17894062 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 harmonic distortion current flowing through the second input transistor and common mode harmonic distortion current flowing through the first input transistor. - The second distortion cancellation transistor cancels out differential mode harmonic distortion current flowing through the first input transistor and common mode harmonic distortion current flowing through the second input transistor.
- Potential Applications
- This technology can be used in wireless communication devices to improve signal quality and reduce distortion. - It can be implemented in audio equipment to enhance sound quality and reduce unwanted noise.
- Problems Solved
- Reduces harmonic distortion in differential circuits, leading to cleaner signals and improved performance. - Helps in canceling out common mode distortion, which can degrade the quality of wireless communication signals.
- Benefits
- Improved signal quality in wireless devices. - Enhanced audio quality in audio equipment. - Reduction of unwanted noise and distortion in electronic circuits.
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.
