{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ELEC5403_Lab_3 - ELEC5403 LAB 3 Single Stub Tuning...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 ELEC5403 LAB 3 Single Stub Tuning OBJECTIVE In this experiment you will measure the impedance and the reflection coefficient of a nominal 24-ohm low frequency load resistor at different microwave frequencies using a network analyzer HP 8753A, and also match the load impedance to 50 ohms at a single frequency of 500 MHz using single-stub tuning techniques. Introduction The system, an HP 8753A network analyzer measures the complex one port reflection coefficient S11 or simply r. Calibration of the instrument is done with a standard open load, a standard short load and a standard 50-ohm load. Recalibration is required before measurement if the settings are changed on the instrument. This system uses real time analog signal processing exclusively. Measurements can be done over wide frequency sweeps (linear frequency sweep from 0.3 MHz - 3 GHz) to see overall trends and then individual frequency points (CW frequency) examined for details. By plotting the component input impedance on a Smith Chart we can rapidly match the component to 50 ohms. This involves selecting the correct lengths of transmission lines to act as impedance transforming elements. Equipment Required Spectrum Analyser Slotted Line Signal Generator with internal modulator and attenuation Stubs, Coax Network Analyser HP 8753A TDR
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon