Adaptive impedance mismatch detector system

Details Adaptive impedance mismatch detector system Adaptive impedance mismatch detector system

1985-11-22

1987-03-03

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

330207P, 330289, 333 17M, 455117, 324 58R, H03F 152

Patent

active

046478710

ABSTRACT:
An adaptive impedance mismatch detector system is provided for determining whether or not a particular load impedance is matched or mismatched to the characteristic impedance of a transmission line. The detector system is capable of determining if a particular load impedance has a value outside of an impedance threshold circle having a center at a location other than at the center of the Smith Chart. The system changes the radius and/or center of the threshold circle in response to changes in circuit operating conditions or parameters. This flexibility enables the detector to be more selective in determining improper load conditions.

REFERENCES:
patent: 3601717 (1971-08-01), Kuecken
patent: 4131860 (1978-12-01), Fyot
patent: 4439741 (1984-03-01), Turner, Jr.
patent: 4493112 (1986-01-01), Bruene
Minicircuits, "The Radio Amature's Handbook," 1982 edition, American Radio Relay League, pp. 16-32.
"IEEE Transactions on Microwave Theory and Techniques," vol. MTT-30, No. 4, Apr., 1982, p. 660.

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