PHASE SHIFTER
First Claim
1. A phase shifter comprises:
- a hybrid coupler circuit including a first output node and a second output node that outputs a first output signal and a second output signal that is out of phase with the first output signal respectively against an input;
a first amplifier circuit including a first input node receiving the first output signal that amplifies the first output signal;
a second amplifier circuit including a second input node receiving the second output signal and amplifying the second output signal;
a first impedance matching circuit that performs impedance matching between the first output node and the first input node anda second impedance matching circuit that performs impedance matching between the second output node and the second input node,wherein the first impedance matching circuit includes;
a first resistance element;
a first capacitance element;
a first inductor, anda second resistance element,wherein one end of the first resistance element is coupled to the first output node, and the other end of the first resistance element is coupled to one end of the first capacitance element,wherein one end of the first inductor is coupled to the first output node, and the other end of the first inductor is coupled to one end of the second resistance element,wherein the second impedance matching circuit includes;
a third resistance element,a second capacitance element,a second inductor,a fourth resistance element,wherein one end of the third resistance element is coupled to the second output node, and the other end of the third resistance element is coupled to one end of the second capacitance element,wherein one end of the second inductor is connected to the second output node, and the other end of thesecond inductor is coupled to one end of the fourth resistance element.
1 Assignment
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Accused Products
Abstract
A phase shifter capable of improving phase accuracy by a simple method is provided. The phase shifter includes a hybrid coupler circuit including inductors with mutual inductances, an amplifying circuit, an impedance matching circuit provided between the hybrid coupler circuit and the amplifying circuit. The impedance matching circuit includes a first resistance element connected to an output node of the hybrid coupler circuit, a capacitance element connected between the first resistance element and the ground line in series, another inductor connected in parallel with the first resistance element, and a second resistance element provided between the inductor and the ground line in series.
1 Citation
13 Claims
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1. A phase shifter comprises:
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a hybrid coupler circuit including a first output node and a second output node that outputs a first output signal and a second output signal that is out of phase with the first output signal respectively against an input; a first amplifier circuit including a first input node receiving the first output signal that amplifies the first output signal; a second amplifier circuit including a second input node receiving the second output signal and amplifying the second output signal; a first impedance matching circuit that performs impedance matching between the first output node and the first input node and a second impedance matching circuit that performs impedance matching between the second output node and the second input node, wherein the first impedance matching circuit includes; a first resistance element; a first capacitance element; a first inductor, and a second resistance element, wherein one end of the first resistance element is coupled to the first output node, and the other end of the first resistance element is coupled to one end of the first capacitance element, wherein one end of the first inductor is coupled to the first output node, and the other end of the first inductor is coupled to one end of the second resistance element, wherein the second impedance matching circuit includes; a third resistance element, a second capacitance element, a second inductor, a fourth resistance element, wherein one end of the third resistance element is coupled to the second output node, and the other end of the third resistance element is coupled to one end of the second capacitance element, wherein one end of the second inductor is connected to the second output node, and the other end of the second inductor is coupled to one end of the fourth resistance element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification