US 2024/0072735 A1 · Differential Mode and Common Mode Distortion Cancellation Circuitry

Abstract

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.

Claims20

Dependent claims

A differential circuit comprising:

a first input transistor having a gate terminal configured to receive an input signal, a drain terminal coupled to a first output terminal of the differential circuit, and a source terminal;
a first passive component having a first terminal coupled to the source terminal of the first input transistor and having a second terminal coupled to a power supply line;
and
a first distortion cancellation transistor having a gate terminal coupled to the source terminal of the first input transistor and having a drain terminal coupled to the drain terminal of the first input transistor.

1 more element

A differential circuit comprising:

a first input transistor having a gate terminal configured to receive an input signal, a drain terminal coupled to a first output port of the differential circuit, and a source terminal;
a second input transistor having a gate terminal configured to receive the input signal, a drain terminal coupled to a second output port of the differential circuit, and a source terminal;
a first distortion cancellation component coupled to the first and second input transistors, the first distortion cancellation component being configured to produce 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 based on a voltage at the source terminal of the first input transistor;
and
a second distortion cancellation component coupled to the first and second input transistors, the second distortion cancellation components being configured to produce 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 based on a voltage at the source terminal of the second input transistor.

2 more elements

Dependencies are inferred from the claim text.

Differential Mode and Common Mode Distortion Cancellation Circuitry

Life of this patent

Differential Mode and Common Mode Distortion Cancellation Circuitry

Life of this patent

Abstract

Claims20