Apparatuses, systems and methods for faciliating a phase shifter
AssigneeNXP USA, Inc.
InventorsXin Yang, Dominicus Martinus Wilhelmus Leenaerts
Life of this patent
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Abstract
Aspects of this disclosure are directed to phase shifters, inclusive of an active 90-degree phase shifter. A phase shifter of this disclosure may include a coupler that generates, from an input signal, a first signal at a first coupler output and a second signal at a second coupler output, a first plurality of transistors coupled to the first coupler output, and a second plurality of transistors coupled to the second coupler output. The first plurality of transistors and the second plurality of transistors may form a multiplexer that implements a nominal 90-degree phase shift in an output signal in accordance with a selection via a control signal. Other aspects and embodiments are disclosed.
Claims20
A circuit comprising:
- a coupler with a first coupler output and a second coupler output, wherein the coupler generates, from an input signal, a first signal at the first coupler output and a second signal at the second coupler output;
- a first plurality of transistors coupled to the first coupler output;
- and
- a second plurality of transistors coupled to the second coupler output, the first plurality of transistors and the second plurality of transistors forming a multiplexer that implements a nominal 90-degree phase shift in an output signal in accordance with a selection via a control signal received at a control signal input.
A system comprising:
- a phase-inverting variable gain amplifier (PI-VGA) that provides 0-to-180 degree phase shifting;
- a 0-to-90 degree phase shifter implemented via passive components;
- and
- an active 90-degree phase shifter.
A method comprising:
- obtaining an input signal;
- generating, via a coupler and based on the input signal, an in-phase signal component and a quadrature signal component;
- and
- generating, via an active circuit and based on the in-phase signal component and the quadrature signal component, an output signal that provides a nominal 90-degree phase shift in accordance with a selection via a control signal.
Dependencies are inferred from the claim text.