Direct coaxial interface for circuits
First Claim
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1. An electrical system comprising:
- an integrated circuit configured to produce energy waves, wherein the integrated circuit has a first impedance and a first mode energy wave propagation;
an energy transmission device configured to transmit the energy waves, wherein the energy transmission device has a second impedance and a second mode of energy wave propagation; and
a flexible coaxial cable comprising a pin, surrounded by a spacer which is concentrically surrounded by an insulating jacket, and wherein the pin is directly connected by a first wirebond to the integrated circuit and connected to the energy transmission device, wherein the flexible coaxial cable is configured to transmit the energy waves between the integrated circuit and the energy transmission device with minimal loss by transforming the impedance the energy waves experience as the energy waves travel along the flexible coaxial cable.
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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. In one exemplary embodiment, the interface comprises a coaxial structure such as a coaxial cable that directly connects the monolithic microwave integrated circuit to the waveguide to transmit energy such as microwave energy with minimal loss.
213 Citations
17 Claims
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1. An electrical system comprising:
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an integrated circuit configured to produce energy waves, wherein the integrated circuit has a first impedance and a first mode energy wave propagation; an energy transmission device configured to transmit the energy waves, wherein the energy transmission device has a second impedance and a second mode of energy wave propagation; and a flexible coaxial cable comprising a pin, surrounded by a spacer which is concentrically surrounded by an insulating jacket, and wherein the pin is directly connected by a first wirebond to the integrated circuit and connected to the energy transmission device, wherein the flexible coaxial cable is configured to transmit the energy waves between the integrated circuit and the energy transmission device with minimal loss by transforming the impedance the energy waves experience as the energy waves travel along the flexible coaxial cable. - View Dependent Claims (2, 3, 4)
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5. A method of transmitting energy with minimal loss comprising:
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providing an integrated circuit that produces energy waves wherein the integrated circuit has a first impedance; providing an energy transmission device configured to transmit the energy waves wherein the energy transmission device has a second impedance; directly connecting a coaxial interface comprised of a pin, spacer, and an insulating jacket to the integrated circuit with a first wirebond on one end of the coaxial interface and directly connecting to the energy transmission device on an opposing end of the coaxial interface wherein the impedance of the coaxial interface changes from the one end of the coaxial interface to the opposing end of the coaxial interface; transmitting the energy waves from the integrated circuit through the coaxial interface and transforming the impedance the energy waves experience as the energy waves travel along the coaxial interface; and delivering the energy waves to the energy transmission device wherein the impedance that the energy waves experiences near the energy transmission device has been transformed by the coaxial interface. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An electrical system comprising:
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a monolithic microwave integrated circuit, wherein the monolithic microwave integrated circuit has a first impedance of about fifty ohms and a first mode of energy wave propagation; a waveguide configured to transmit energy waves, wherein the waveguide has a second impedance of about two hundred and seventy ohms and a second mode of energy wave propagation; and a coaxial interface comprising a pin, surrounded by an insulating jacket directly connected by a first wirebond to the monolithic microwave integrated circuit and connected to the waveguide, wherein the coaxial interface is configured to transmit the energy waves between the monolithic microwave integrated circuit and the waveguide with minimal loss. - View Dependent Claims (12, 13)
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14. An electrical system comprising:
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a monolithic microwave integrated circuit configured to produce energy waves with an impedance of about fifty ohms and a first mode of energy wave propagation of quasi-TEM; a waveguide configured to transmit the energy waves with an impedance of about two hundred and seventy ohms and a second mode of energy wave propagation of TE10; and a coaxial interface comprising a pin, surrounded by a spacer and an insulating jacket directly connected by a first wirebond to the monolithic microwave integrated circuit and connected to the waveguide, wherein the coaxial interface is configured to transmit the energy waves between the monolithic microwave integrated circuit and the waveguide with minimal loss. - View Dependent Claims (15, 16, 17)
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Specification