Differential-to-single-ended active converter

A method for differential-to-single-ended signal conversion, comprising:

• receiving a differential signal at a first input of a differential input pair and a second input of the differential input pair;
• and
• converting the differential signal to a single-ended signal via a balanced-to-unbalanced circuit comprising:
• a first transistor including a first terminal coupled to the first input of the differential input pair and a second terminal coupled to an output node of the balanced-to-unbalanced circuit;
• a second transistor including a second terminal coupled to the second input of the differential input pair and a second terminal coupled to the output node of the balanced-to-unbalanced circuit;
• a third transistor including a first terminal coupled to the first input of the differential input pair;
• and
• a fourth transistor including a first terminal coupled to the second input of the differential input pair, a second terminal of the third transistor being coupled to a second terminal of the fourth transistor.

A transmitter comprising:

• a mixer;
• and
• an active-component balanced-to-unbalanced (balun) circuit coupled to the mixer and including:
• a first transistor including a first terminal coupled to a first input of a differential input pair of the active-component balun circuit and a second terminal coupled to an output node of the active-component balun circuit;
• a second transistor including a second terminal coupled to a second input of the differential input pair and a second terminal coupled to the output node of the active-component balun circuit;
• a third transistor including a first terminal coupled to the first input of the differential input pair;
• and
• a fourth transistor including a first terminal coupled to the second input of the differential input pair, a second terminal of the third transistor being coupled to a second terminal of the fourth transistor.