Keywords

Colpitts oscillator, S-parameter analysis, Input and output matching networks, Tank circuit component synthesis, 100 MHz prototype

Abstract

This research report describes a method for designing a Colpitts oscillator using S-parameters. The oscillator components are grouped into three functional blocks: 1) an unstable active network (which includes the transistor, feedback capacitor, and input resistor); 2) an output matching network (which includes the inductor, tuning capacitor, and load); and, 3) an input matching network (which consists of the remaining tank capacitor). This configuration not only satisfies the standard Colpitts oscillator topology, but allows the use of three simple criteria (based on the network S-parameters) to predict oscillation. A computer program was developed to calculate specific tank component values based on these criteria. An example oscillator (at 100 MHz) was built to verify the procedure.

Notes

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Graduation Date

1986

Semester

Fall

Advisor

Belkerdid, Madjid A.

Degree

Master of Science (M.S.)

College

College of Engineering

Format

PDF

Pages

50 pages

Language

English

Rights

Public Domain

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0020372

Subjects

Radio frequency oscillators--Design and construction; Oscillators, Transistor--Design and construction; Oscillators, Electric--Computer simulation; Feedback oscillators; Oscillators, Electric--Mathematical models

Accessibility Status

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