General technique for the integration of MIC/MMIC'S with waveguides
First Claim
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1. A microwave transition device for coupling a waveguide and a microwave integrated circuit, said transition device being located within said waveguide for alignment with an electric field having microwave energy, said device comprising:
- a dielectric substrate having a metallized surface on only one side thereof;
a unilateral finline formed in said metallized surface at an end portion of said substrate;
a slotline formed adjacent to said finline on said metallized surface and connected to said finline at one end thereof; and
a balun positioned proximate to said slotline, said microwave integrated circuit being attached to said metallized surface and connected to said balun, wherein said balun comprises a portion of said slotline equal in length to 1/4 of the wavelength of the electric field and a wire bond, passing over said portion of said slotline, and connected at one end to said microwave integrated circuit and at an opposite end to said metallized surface.
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Abstract
A technique for packaging and integrating of a microwave integrated circuit (MIC) or monolithic microwave integrated circuit (MMIC) with a waveguide uses a printed conductive circuit pattern on a dielectric substrate to transform impedance and mode of propagation between the MIC/MMIC and the waveguide. The virtually coplanar circuit pattern lies on an equipotential surface within the waveguide and therefore makes possible single or dual polarized mode structures.
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Citations
14 Claims
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1. A microwave transition device for coupling a waveguide and a microwave integrated circuit, said transition device being located within said waveguide for alignment with an electric field having microwave energy, said device comprising:
- a dielectric substrate having a metallized surface on only one side thereof;
a unilateral finline formed in said metallized surface at an end portion of said substrate;
a slotline formed adjacent to said finline on said metallized surface and connected to said finline at one end thereof; and
a balun positioned proximate to said slotline, said microwave integrated circuit being attached to said metallized surface and connected to said balun, wherein said balun comprises a portion of said slotline equal in length to 1/4 of the wavelength of the electric field and a wire bond, passing over said portion of said slotline, and connected at one end to said microwave integrated circuit and at an opposite end to said metallized surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- a dielectric substrate having a metallized surface on only one side thereof;
Specification