Low power phase detector
AssigneeNorthrop Grumman Systems Corporation
InventorsBouchaib Cherif, Max Earl Nielsen, Robert John March, III
Life of this patent
Estimating the term…
Abstract
Phase detectors are provided. In one example, The phase detector may include a first transistor leg and a second transistor leg. Each of the first transistor leg and the second transistor leg may include a pair of transistors coupled together at a plurality of common nodes. The phase detector may include an input at the first transistor leg. The input may be configured to receive a first input signal and a second input signal. The phase detect may include an output coupled to the second transistor leg. The output may be configured to provide an output signal. The output signal may include a component indicative of a phase difference between the first input signal and the second input signal.
Claims20
A phase detector, comprising:
- a first transistor leg and a second transistor leg, each of the first transistor leg and the second transistor leg comprising a pair of transistors coupled together at a plurality of common nodes;
- an input at the first transistor leg, the input configured to receive a first input signal and a second input signal;
- an output coupled to the second transistor leg, the output configured to provide an output signal;
- wherein the output signal comprises a component indicative of a phase difference between the first input signal and the second input signal.
A phase detector, comprising:
- a transistor core having an input, the input operable to receive a first input signal and a second input signal;
- an output associated with the transistor core, the output configured to provide an output signal comprising a component indicative of a phase difference between the first signal and the second signal;
- wherein the transistor core comprises a first pair of transistors coupled at a first common node and a second common node, the transistor core comprising a second pair of transistors coupled to the first common node and a third common node;
- and
- wherein the output is provided at the third common node.
A phase detector comprising:
- a first transistor comprising a first terminal, a second terminal, and a third terminal;
- a second transistor comprising a fourth terminal, a fifth terminal, and a sixth terminal;
- a third transistor comprising a seventh terminal, an eighth terminal, and a ninth terminal;
- a fourth transistor comprising a tenth terminal, an eleventh terminal, and a twelfth terminal;
- wherein the first terminal is operable to receive a first input signal;
- wherein the fourth terminal is operable to receive a second input signal;
- wherein the second terminal, fifth terminal, eighth terminal, and eleventh terminal are coupled at a first common node;
- wherein the third terminal and the sixth terminal are coupled at a second common node;
- wherein the ninth terminal and the twelfth terminal are coupled at a third common node;
- and
- wherein an output is provided at the third common node, the output configured to provide an output signal comprising a component indicative of a difference between the first input signal and the second input signal.
Dependencies are inferred from the claim text.