Standard or reference transmission line with variable group time

Details Standard or reference transmission line with variable group time Standard or reference transmission line with variable group time

1992-09-02

1994-04-26

Ham, Seungsook

Wave transmission lines and networks

Coupling networks

Equalizers

333156, 333160, H03H 718, H01P 900

Patent

active

053070313

ABSTRACT:
An adjustable impedance-correcting delay line adapted to form a standard line for providing an adjustable group delay time for measurement purposes or the like in which a plurality of different delay networks including coaxial segments of different lengths with or without damping compensating amplifiers can be selectively connected in the cascade or shunted. A bridge circuit can be provided with fundamental damping and delay time for bridging with the standard delay line where difference measurements are of interest.

REFERENCES:
patent: 3206686 (1965-09-01), Goor
patent: 3781722 (1973-12-01), Pierson
patent: 4056792 (1977-11-01), Horwitz et al.
patent: 4594561 (1986-06-01), Grodrosky et al.
IFC Publication 835, Part 2, Measurements for Terrestrial Radio-Relay Systems, Mar. 1990, pp. 6, 7, 19.
Patent Abstracts of Japan, vol. 12, No. 94, Mar. 26, 1988; JP-A-62-226708, Tanaka, Oct. 5, 1987.

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