Delay generator

Details Delay generator Delay generator

1989-10-10

1991-05-07

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

324642, 328 56, 307601, 307606, H03H 5159

Patent

active

050142860

ABSTRACT:
A delay generator having very high accuracy and stability over temperature variations and time, suited for very short delay times, such as in clock recovery circuits in very high-speed digital data transmission systems. A delay line, having one end either open or shorted and a round-trip delay time of .tau., is driven by a voltage source, the output impedance thereof matched to the delay line, and a current source. The current source and the voltage source are driven by an input signal to be delayed. The voltage source is provided by a transistor operating as a voltage follower, which also operates to provide as an output a signal dependent on the difference between the input signal and the voltage on the delay line. This output serves as the output of the delay generator, the input signal delayed by a the time .tau..

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