Reference impedance apparatus, systems, and methods

Details Reference impedance apparatus, systems, and methods Reference impedance apparatus, systems, and methods

2006-02-14

2006-02-14

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S246000

Reexamination Certificate

active

06998931

ABSTRACT:
An apparatus and system may include a microstrip line capable of being coupled to an amplifier, wherein the microstrip line is to transform an input impedance of the amplifier to a substantially resistive value, and wherein the microstrip line has a characteristic impedance approximately equal to a selected system reference impedance. The apparatus and system may include a transformer coupled to the microstrip line, wherein the transformer is to transform the substantially resistive value into approximately a resistance of a source impedance included in a source. An article may include data, which, when accessed, results in a machine performing a method including simulating selecting a system having a reference impedance and simulating coupling an amplifier having an input impedance to a source having a source impedance using a transformer coupled to a microstrip line.

REFERENCES:
patent: 6166599 (2000-12-01), Aparin et al.
patent: 6670865 (2003-12-01), Lopez
Horn, Delton T., Basic Elecronics Theory, 1994, TAB Books, 4th edition, p. 467.
Fujimoto, R., et al., “A 7-GHz 1.8-dB NF CMOS Low-Noise Amplifier”,IEEE Journal of Solid-State Circuits, vol. 37, No. 7, Jul. 2002, pp. 852-856.
Goo, Jung-Suk, et al., “A Noise Optimization Technique for Integrated Low-Noise Amplifiers”,IEEE Journal of Solid-State Circuits, vol. 37, No. 8, Aug. 2002, pp. 994-1002.

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