Adjustable low-loss interface
First Claim
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1. An electrical system comprising:
- a monolithic microwave integrated circuit comprising a substrate having a first end and a second end opposing the first end and wherein the first end comprises an input region and the second end comprises an output region; and
an isolation wall located between the first end and the second end wherein the isolation wall isolates the input region from the output region, but does not completely separate the input region from the output region.
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Abstract
In general, in accordance with an exemplary aspect of the present invention, a low-loss interface for connecting an integrated circuit such as a monolithic microwave integrated circuit to an energy transmission device such as a waveguide is disclosed. The interface comprises an isolation wall placed between an input and output region of an integrated circuit to reduce ripple and isolate the waveguide cavity from the monolithic microwave integrated circuit circuitry. The interface further comprises a turning screw or other similar member that is configured to closely match the impedance of integrated circuit 11 with the impedance at interface 10 to further reduce loss.
218 Citations
24 Claims
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1. An electrical system comprising:
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a monolithic microwave integrated circuit comprising a substrate having a first end and a second end opposing the first end and wherein the first end comprises an input region and the second end comprises an output region; and an isolation wall located between the first end and the second end wherein the isolation wall isolates the input region from the output region, but does not completely separate the input region from the output region. - View Dependent Claims (2)
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3. An electronic system comprising:
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a first energy transmission or reception device with a first impedance and a first mode of energy wave propagation wherein the first energy transmission or reception device comprises a substrate having a first end and a second end opposing the first end and wherein the first end comprises an input region and the second end comprises an output region; a second energy transmission or reception device with a second impedance and a second mode of energy wave propagation; a step launch in communication with the first energy transmission or reception device and the second energy transmission or reception device, wherein the step launch is configured to transmit energy with minimal loss by matching the first impedance and the first mode of energy wave propagation to the second impedance and the second mode of energy wave propagation without the use of dielectric materials; and an isolation wall located between the first end and the second end and configured to separate the input region from the output region. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. An electronic system comprising:
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a monolithic microwave integrated circuit comprising a circuit board having a first end and a second end opposing the first end wherein the first end comprises an input region and the second end comprises an output region; a first isolation wall located between the first end and the second end; a waveguide comprising a cavity; and an interface comprising a step launch that defines a portion of the cavity of the waveguide wherein the portion of the interface that defines the cavity of the waveguide has a smaller size than the portion of the cavity defined by the waveguide. - View Dependent Claims (11, 12, 13, 14)
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15. An electronic system comprising:
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a first energy transmission device with a first impedance and a first mode of energy wave propagation wherein the first energy transmission device comprises a substrate having a first end and a second end opposing the first end and wherein the first end comprises an input region and the second end comprises an output region; an isolation wall located between the first end and the second end wherein the isolation wall is configured to separate an input signal present at the input region from an output signal produced at the output region; a second energy transmission device comprising a cavity wherein the second energy transmission device has a second impedance and a second mode of energy wave propagation; and a step launch interface defining an interface cavity and contacting the first energy transmission device and the second energy transmission device and configured to transport energy from the first energy transmission device to the second energy transmission device with minimal loss by matching the impedance and first mode of energy wave propagation to the second impedance and second mode of energy wave propagation by performing impedance matching and mode transition without the use of dielectric materials. - View Dependent Claims (16, 17, 18, 19)
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20. An electronic system comprising:
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a monolithic microwave integrated circuit comprising a circuit board having a first end and a second end opposing the first end wherein the first end comprises an input region and the second end comprises an output region; an isolation wall placed between the first end and the second end; a waveguide comprising a waveguide cavity; an interface comprising a step launch disposed within the waveguide cavity and defining an interface cavity wherein the interface cavity is smaller than the waveguide cavity; a turning screw that adjusts the size of the waveguide cavity; and an interface connecting the monolithic microwave circuit to the interface. - View Dependent Claims (21)
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22. A pathway for microwaves comprising:
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a monolithic microwave integrated circuit with a first impedance wherein the monolithic microwave integrated circuit comprises a circuit board having a first end and a second end opposing the first end wherein the first end comprises an input region and the second end comprises an output region; an isolation wall placed between the first end and the second end wherein the isolation wall is configured to separate an input signal present at the input region from an output signal produced at the output region; an interface connected to the monolithic integrated circuit, the interface having the first impedance at an interface first end and a second impedance at an interface second end, the interface further connected to a waveguide at the second end, wherein the waveguide has a second impedance; and the interface further comprising a step launch in communication with a cavity, wherein the cavity has a different volume at different points along the direction of the microwave pathway, and wherein the volume of the cavity changes along the direction of the microwave pathway. - View Dependent Claims (23, 24)
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Specification