Electronically variable delay line

Details Electronically variable delay line Electronically variable delay line

1991-02-26

1992-01-21

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333 32, 333139, H03H 720, H03H 738

Patent

active

050831003

ABSTRACT:
An electronically variable delay line having adjustable delay and bandwidth characteristics is provided. A varactor diode functioning as a variable controlled capacitance is coupled between a signal conductor and a ground reference conductor, thereby segmenting the signal conductor into two, individual smaller segments of conductor which function as fixed inductances. The delay characteristic of the line is adjusted by varying the varactor's biasing voltage which, in turn, varies the varactor's capacitance. A staggered termination technique is implemented to stabilize the insertion loss characteristics of the delay line.

REFERENCES:
patent: 3177433 (1965-04-01), Simon et al.
patent: 3246265 (1966-04-01), Smith-Vaniz
patent: 3748499 (1973-07-01), Schaffner
patent: 3750055 (1973-07-01), Funck
patent: 3882431 (1975-05-01), Hopwood et al.
patent: 3911382 (1975-10-01), Harth et al.
patent: 4604591 (1986-08-01), Vasile
patent: 4837532 (1989-06-01), Lang

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