Monolithic microwave integrated circuit with integral array antenna
First Claim
1. A monolithic integrated circuit antenna system, comprising:
- at least two receiving array antenna elements, each of which includes a metallized resonant radiation element of approximately one-half wavelength dimension at an intended antenna operating frequency;
a phasing and r.f. feeding network connected to said antenna elements and including one or more FET devices associated with at least some some of said antenna elements for combining r.f. signals received by said antenna elements and for controlling an electrical phase shift associated with the r.f. signals coming from each of said receiving array elements; and
an integrated circuit controller means connected to each of said Fet devices for controlling said phasing and r.f. feeding network.said array elements, phasing and r.f. feeding network and controller means all being integrated onto a single substrate of semi-insulating GaAs semiconductor material having a resistivity of about 107 to 109 ohm-cm.
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Accused Products
Abstract
A monolithic microwave integrated circuit including an integral array antenna. The system includes radiating elements, feed network, phasing network, active and/or passive semiconductor devices, digital logic interface circuits and a microcomputer controller simultaneously incorporated on a single semi-insulating GaAs substrate by means of a controlled fabrication process sequence.
The resulting integrated circuit structure built upon a semi-insulating GaAs substrate provides a unique monolithic structure capable not only of phase-shifting, amplifying or otherwise controlling and conducting r.f. electrical signals but also capable of directly radiating/receiving r.f. electromagnetic emanations propagated to/from the integral antenna elements of the monolithic structure.
65 Citations
13 Claims
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1. A monolithic integrated circuit antenna system, comprising:
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at least two receiving array antenna elements, each of which includes a metallized resonant radiation element of approximately one-half wavelength dimension at an intended antenna operating frequency; a phasing and r.f. feeding network connected to said antenna elements and including one or more FET devices associated with at least some some of said antenna elements for combining r.f. signals received by said antenna elements and for controlling an electrical phase shift associated with the r.f. signals coming from each of said receiving array elements; and an integrated circuit controller means connected to each of said Fet devices for controlling said phasing and r.f. feeding network. said array elements, phasing and r.f. feeding network and controller means all being integrated onto a single substrate of semi-insulating GaAs semiconductor material having a resistivity of about 107 to 109 ohm-cm. - View Dependent Claims (2, 3)
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4. An integrated-circuit monolithic antenna system, comprising:
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at least two transmitting array antenna elements, each of which includes a metallized resonant radiating element of approximately one-half wavelength dimension at an intended antenna operating frequency; a phasing and r.f. feeding network connected to said antenna elements and including one or more FET devices associated with at least some of said antenna elements for controlling an electrical phase shift associated with r.f. signals being fed to these transmitting array elements; and an integrated circuit controller means connected to each of said FET devices for controlling said phasing and r.f. feeding network, said array elements, phasing network and controller means all being integrated onto a single substrate of semi-insulating GaAs semiconductor material having resistivity of about 107 to 109 ohm-cm. - View Dependent Claims (5, 6)
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7. A monolithic integrated circuit antenna system comprising:
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a plurality of antenna elements .Iadd.each .Iaddend.having a one-half wavelength resonant dimension and arranged in an array for transmitting/receiving electromagnetic waves; and a phasing and r.f. feeding network including plural FET integrated circuit structures electrically connected to control the electrical phase shift of electrical currents flowing to/from each said element, said antenna elements and said phasing network being integrated on a single substrate of semi-insulating GaAs semiconductor material having a resistivity of about 107 to 109 ohm-cm. - View Dependent Claims (8, 9, 10)
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11. A monolithic integrated circuit comprising:
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a substrate of semi-insulating GaAs having a resistivity of about 107 to 109 ohm-cm; an array of plural metallized r.f. microstrip antenna radiators formed and disposed on said substrate, each of said radiators having a resonant dimension and at least one radiation slot from/to which r.f. electromagnetic radiation propagates; an array of metallized r.f. transmission feedlines also integrally formed in said substrate and connected to the edges of said antenna radiators for conducting r.f. electrical signals to/from said radiators; an array of phase-shifting circuits including FET devices also integrally formed on said substrate, individual ones of said phase-shifting circuits being connected to respective ones of said feedlines for ocntrolling the relative r.f. phase shifts encountered by r.f. signals passing to/from said radiators; and an array of controlled-gain amplifier circuits also integrally formed on said substrate, individual ones of said amplifier circuits being connected in circuit with said feedlines for controlling the amplitude of r.f. signals passing to/from said radiators. .Iadd.
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- 13. about 0.6 mm at 10 GHz. .Iaddend. .Iadd.26. A monolithic integrated circuit antenna system having a microstrip radiator aperture efficiency greater than 90% comprising a substrate of semi-insulating gallium arsenide having a resistivity of about 107 to about 109 ohm-cm and a dielectric constant of about 12.6 and at least two antenna elements integrated thereon, each element being a metallized resonant element of a predetermined wavelength resonant dimension at an intended antenna operating frequency. .Iaddend. .Iadd.27. A monolithic system as recited in claim 26 wherein the metallized resonant radiation element has a dimension of approximately one-half wavelength. .Iaddend. .Iadd.28. An antenna structure comprising a substrate of semi-insulating gallium arsenide having a resistivity of between about 107 and 109 ohm-cm, an antenna element being integrally formed on said substrate and arranged for transmitting or receiving electromagnetic waves, and a feedline integrally formed on said gallium arsenide and connected to an edge of said antenna element for conducting electrical signals to and from said radiator. .Iaddend.
Specification