Frequency filtering circuit for wireless communication devices
First Claim
1. A frequency filtering circuit fabricated on an integrated circuit for wireless communications, comprisinga first resonator circuit comprising a first transmission line and a first capacitor coupled to the first transmission line integrated on a semiconductor substrate using semiconductor deposition on the integrated circuit;
- a second resonator circuit in parallel to the first resonator circuit, said second resonator circuit comprising a second transmission line and a second capacitor coupled to the second transmission line; and
a coupling circuit that couples the first resonator circuit and the second resonator circuit as part of a diplexer, wherein the coupling circuit includes a third capacitor; and
a first inductor in parallel to the third capacitor, wherein the third capacitor and the first inductor are coupled to the first transmission line and the second transmission line.
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Accused Products
Abstract
Systems and methods are disclosed for a frequency filtering circuit for wireless communications that includes a first resonator circuit comprising a first transmission line and a first capacitor coupled to the first transmission line and a second resonator circuit in parallel to the first resonator circuit, said second resonator circuit comprising a second transmission line and a second capacitor coupled to the second transmission line. A coupling circuit couples the first resonator circuit and the second resonator circuit.
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Citations
26 Claims
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1. A frequency filtering circuit fabricated on an integrated circuit for wireless communications, comprising
a first resonator circuit comprising a first transmission line and a first capacitor coupled to the first transmission line integrated on a semiconductor substrate using semiconductor deposition on the integrated circuit; -
a second resonator circuit in parallel to the first resonator circuit, said second resonator circuit comprising a second transmission line and a second capacitor coupled to the second transmission line; and a coupling circuit that couples the first resonator circuit and the second resonator circuit as part of a diplexer, wherein the coupling circuit includes a third capacitor; and
a first inductor in parallel to the third capacitor, wherein the third capacitor and the first inductor are coupled to the first transmission line and the second transmission line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless communications integrated circuit device, comprising:
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a semiconductor substrate; a frequency filtering circuit, comprising a first resonator circuit comprising and a first transmission line fabricated on the semiconductor substrate using semiconductor deposition on the semiconductor substrate and a first capacitor coupled to the first transmission line; a second resonator circuit in parallel to the first resonator circuit, said second resonator circuit comprising a second transmission line fabricated on the semiconductor substrate and a second capacitor coupled to the second transmission line; and a coupling circuit that couples the first resonator circuit and the second resonator circuit as part of a diplexer, wherein the coupling circuit includes a third capacitor; and
a first inductor in parallel to the third capacitor, wherein the third capacitor and the first inductor are coupled to the first transmission line and the second transmission line; andone or more amplifiers coupled to the diplexer. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification