Accession Number : AD0702015

Title :   THE USE OF TRANSISTORS AS BROADBAND VOLTAGE-VARIABLE TIME DELAYS.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CALIF STANFORD ELECTRONICS LABS

Personal Author(s) : Skuldt,E. L.

Report Date : SEP 1969

Pagination or Media Count : 59

Abstract : A mathematical model is developed that describes the variable time-delay performnce of a high-frequency transistor amplifier. Time-delay change is achieved by voltage variation of the minority-carrier transit time and the collector capacitance of the transistor. A figure of merit clarifies the relationship between time delay and amplifier bandwidth and is used to obtain maximum utilization of the voltage-variable transistor parameters. Other delay techniques, specifically the LC lumped approximate transmission-line section, provide voltage-variable continuous time delay, using only a variable capacitance. Comparison between the transistor and LC techniques shows that using changes in transit time of ordinary HF transistors offers little advantage over the LC technique. (Author)

Descriptors :   (*DELAY CIRCUITS, TRANSISTOR AMPLIFIERS), CAPACITANCE, VOLTAGE, BROADBAND, MATHEMATICAL MODELS, HIGH FREQUENCY, TRANSFER FUNCTIONS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE