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1. (WO1987003378) ADAPTIVE IMPEDANCE MISMATCH DETECTOR SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003378 International Application No.: PCT/US1986/002484
Publication Date: 04.06.1987 International Filing Date: 14.11.1986
IPC:
G01R 27/06 (2006.01) ,H03F 1/52 (2006.01) ,H03F 1/56 (2006.01) ,H03H 7/38 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27
Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02
Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
04
in circuits having distributed constants
06
Measuring reflection coefficients; Measuring standing-wave ratio
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
52
Circuit arrangements for protecting such amplifiers
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
56
Modifications of input or output impedances, not otherwise provided for
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
38
Impedance-matching networks
Applicants:
MOTOROLA, INC. [US/US]; 1303 East Algonquin Road Schaumburg, IL 60196, US
Inventors:
TURNER, Harvey, Nolan, Jr.; US
Agent:
SOUTHARD, Donald, B. @; Motorola, Inc. Patent Department 1303 East Algonquin Road Schaumburg, IL 60196, US
Priority Data:
800,83222.11.1985US
801,18122.11.1985US
Title (EN) ADAPTIVE IMPEDANCE MISMATCH DETECTOR SYSTEM
(FR) SYSTEME DE DETECTION D'INADAPTATIONS D'IMPEDANCE ADAPTATIF
Abstract:
(EN) An adaptive impedance mismatch detector system (10) for determining whether or not a particular load impedance (30) is matched or mismatched to the characteristic impedance of a transmission line (at 20). The detector system is capable of determining if a particular load impedance has a value outside of an impedance threshold circle (24) having a center (22) at a location other than at the center of the Smith Chart (Fig. 2). 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.
(FR) Un système détecteur d'inadaptations d'impédance adaptatif (10) permet de déterminer si une impédance de charge particulière (30) est adaptée ou inadaptée à l'impédance caratéristique d'une ligne de transmission (20). Le système détecteur est capable de déterminer si une impédance de charge particulière possède une valeur extérieure à un cercle de seuil d'impédance (24) ayant un centre (22) à un emplacement autre que le centre du diagramme de Smith (Fig. 2). Le sytème modifie le rayon et/ou le centre du cercle de seuil en réponse aux modifications des conditions ou paramètres de fonctionnement du circuit. Cette flexibilité permet au détecteur d'être plus sélectif dans la détermination de conditions de charge inappropriées.
Designated States: DK, JP, KR
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0247157KR1019887000939