Vector synthesis phase shifter and vector synthesis phase shifting method
AssigneeZte Corporation
InventorChengwei JIA
Life of this patent
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Abstract
A vector sum phase shifter and a vector sum phase shifting method are disclosed. The method may include: passing a first reference input excitation, after being adjusted by a first current source, through a first vector direction control circuit for vector direction determination and then to a first gate width control circuit for adjustment to generate a first output signal; passing a second reference input excitation, after being adjusted by a second current source, through a second vector direction control circuit for vector direction determination and then to a second gate width control circuit for adjustment to generate a second output signal; and vectorially summing the first output signal and the second output signal.
Claims8
A vector sum phase shifter, comprising:
- a first vector sum branch with an input end connected to a first reference input excitation;
- a second vector sum branch with an input end connected to a second reference input excitation;
- and
- a summer to which both an output end of the first vector sum branch and an output end of the second vector sum branch are connected;
- wherein the first vector sum branch comprises:
- a first current source, a first vector direction control circuit, and a first gate width control circuit;
- wherein the first reference input excitation, after being adjusted by the first current source, passes through the first vector direction control circuit for vector direction determination and is output to the first gate width control circuit, and then to the summer after being adjusted by the first gate width control circuit;
- wherein the second vector sum branch comprises:
- a second current source, a second vector direction control circuit, and a second gate width control circuit;
- wherein the second reference input excitation, after being adjusted by the second current source, passes through the second vector direction control circuit for vector direction determination and is output to the second gate width control circuit and then to the summer after being adjusted by the second gate width control circuit;
- and
- wherein the summer vectorially sums an output signal from the first vector sum branch and an output signal from the second vector sum branch.
A vector sum phase shifting method, comprising:
- passing a first reference input excitation, after being adjusted by a first current source, through a first vector direction control circuit for vector direction determination and then to a first gate width control circuit for adjustment to generate a first output signal;
- passing a second reference input excitation, after being adjusted by a second current source, through a second vector direction control circuit for vector direction determination and then to a second gate width control circuit for adjustment to generate a second output signal;
- and
- vectorially summing the first output signal and the second output signal.
Dependencies are inferred from the claim text.