US 2026/0254425 A1 · PHASE SHIFTER CIRCUIT ARCHITECTURES

Abstract

An example apparatus includes first and second circuits to couple to a digital-to-analog converter. The apparatus includes (i) a first transistor including a first load terminal, a second load terminal coupled to a ground node, and a first control terminal coupled to the first circuit, (ii) a second transistor including a third load terminal, a fourth load terminal coupled to the ground node, and a second control terminal coupled to the first circuit, (iii) a third transistor including a fifth load terminal coupled to the third load terminal of the second transistor, a sixth load terminal coupled to the ground node, and a third control terminal coupled to the second circuit, and (iv) a fourth transistor including a seventh load terminal coupled to the first load terminal of the first transistor, an eighth load terminal coupled to the ground node, and a fourth control terminal coupled to the second circuit.

Claims20

Dependent claims

A device comprising:

a first circuit configurable to be coupled to a digital-to-analog converter (DAC);
a second circuit configurable to be coupled to the DAC;
a first transistor including:
a first load terminal;
a second load terminal coupled to a ground node;
and
a first control terminal coupled to the first circuit;
a second transistor including:
a third load terminal;
a fourth load terminal coupled to the ground node;
and
a second control terminal coupled to the first circuit;
a third transistor including:
a fifth load terminal coupled to the third load terminal of the second transistor;
a sixth load terminal coupled to the ground node;
and
a third control terminal coupled to the second circuit;
and
a fourth transistor including:
a seventh load terminal coupled to the first load terminal of the first transistor;
an eighth load terminal coupled to the ground node;
and
a fourth control terminal coupled to the second circuit.

20 more elements

A device comprising:

a first circuit configurable to be coupled to a first digital-to-analog converter (DAC) output, the first DAC output configurable to provide a first current corresponding to an in-phase component of a phase shift;
a second circuit configurable to be coupled to a second DAC output, the second DAC output configurable to provide a second current corresponding to a quadrature component of the phase shift;
a first transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the first transistor coupled to the first circuit;
a second transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the second transistor coupled to the first circuit;
a third transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the third transistor coupled to the second circuit;
and
a fourth transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the fourth transistor coupled to the second circuit,
wherein the first load terminals of the first transistor, the second transistor, the third transistor and the fourth transistor are cross-coupled to a circuit output, the circuit output to provide an output signal based on the phase shift.

5 more elements

A device comprising:

an antenna;
a power amplifier coupled to the antenna;
a digital-to-analog converter (DAC) circuit having a first DAC output and a second DAC output;
first circuitry coupled to the first DAC output;
second circuitry coupled to the second DAC output;
and
a first transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the first transistor coupled to the first circuitry, the second load terminal of the first transistor coupled to a ground node;
a second transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the second transistor coupled to the first circuitry, the second load terminal of the second transistor coupled to the ground node;
a third transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the third transistor coupled to the second circuitry, the second load terminal of the third transistor coupled to the ground node;
and
a fourth transistor having a first load terminal, a second load terminal and a control terminal, the control terminal of the fourth transistor coupled to the second circuitry, the second load terminal of the fourth transistor coupled to the ground node,
wherein the first load terminals of the first transistor and the third transistor are coupled to a first circuit output, the first load terminals of the second transistor and the fourth transistor are coupled to a second circuit output, and the first circuit output and the second circuit output are coupled to the power amplifier.

9 more elements

Dependencies are inferred from the claim text.

Phase shifter circuit architectures

Life of this patent

Phase shifter circuit architectures

Life of this patent

Abstract

Claims20