Resonant impedance matching in microwave and RF device
First Claim
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1. A device, comprising:
- a microstrip line having a length of one half of one wavelength of a microwave or RF signal;
a first conductive pad connected to a center of the microstrip line to supply a DC bias to the microstrip line;
a second conductive pad connecting a load to a selected contact location on the microstrip line; and
a conductive feed line that is insulated from the microstrip line and is electrically coupled to supply the microwave or RF signal to or to receive the microwave or RF signal from the microstrip line, wherein the selected contact location on the microstrip line is selected to provide an impedance matching condition for transferring the microwave or RF signal between the conductive feed line and the second conductive pad.
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Abstract
This application describes devices and techniques for using microwave or RF resonators to provide DC bias, DC blocking, and impedance matching to microwave or RF devices. Both planar and non-planar implementations may be used.
80 Citations
31 Claims
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1. A device, comprising:
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a microstrip line having a length of one half of one wavelength of a microwave or RF signal;
a first conductive pad connected to a center of the microstrip line to supply a DC bias to the microstrip line;
a second conductive pad connecting a load to a selected contact location on the microstrip line; and
a conductive feed line that is insulated from the microstrip line and is electrically coupled to supply the microwave or RF signal to or to receive the microwave or RF signal from the microstrip line, wherein the selected contact location on the microstrip line is selected to provide an impedance matching condition for transferring the microwave or RF signal between the conductive feed line and the second conductive pad. - View Dependent Claims (2)
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3. A method, comprising:
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providing a microstrip feed line and a microstrip resonator that are insulated from each other and are coupled to each other to exchange microwave or RF energy therebetween;
supplying a DC bias voltage to a location on the microstrip resonator where the electric field of a resonance microwave or RF signal has a node; and
connecting a load to the microstrip resonator at a location to provide a impedance matching for exchange the microwave or RF energy with the feed line and to receive the DC bias from the microstrip resonator. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device, comprising:
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a microstrip feed line to transmit microwave or RF energy;
a microstrip resonator positioned to be insulated from the microstrip feed line and coupled to exchange microwave or RF energy with the microstrip feed line;
a bias conductor wire connected to the microstrip resonator to supply a DC bias voltage to a location on the microstrip resonator where the electric field of a resonant microwave or RF signal has a node; and
a signal conductor wire connected to the microstrip resonator at a location to provide a impedance matching for exchange the microwave or RF energy with the feed line and to receive the DC bias from the microstrip resonator. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A device, comprising:
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a microwave or RF resonator comprising a conductor material and in resonance with a microwave or RF signal at a signal wavelength;
a bias conductor connected to the resonator to supply a DC bias voltage to a location on the resonator where the electric field of the resonant microwave or RF signal has a node;
a microwave or RF circuit operates at the signal wavelength; and
a signal conductor connecting the circuit to the resonator to apply the DC bias voltage to the circuit. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification