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Technical Articles
This page contains an index of the technical articles on our website.
Single page method, condensed from the five page article below, for those in a hurry. Uses a VNA and has an accompanying calculator.
Building a HF amplifier in a FLEXI-BOX Part 1
Five page article, with photographs, showing the construction of a prototype HF amplifier on a PCB and it's assembly into a FLEXI-BOX.
Measuring Characteristic Impedance of PCB tracks using a Vector Network Analyser Part 1
Three page article which expands on a method from Transmission Lines and Networks by Walter C. Johnson, McGraw-Hill 1963 p155 Para 4.7 Measurement of the Characteristics of lines. With an accompanying calculator.
A five page article that describes how Chemandy Electronics investigated an accurate parallel plate measurement method using a Vector Network Analyser. With an accompanying calculator.
RF Trap With Attenuators circuit description
A circuit description of this unique FLEXI-BOX project.
Understanding Coaxial RF Transmission Lines by Measurement and Calculation Page 1
A lengthy study of coaxial cables and transmission line theory in simple, logical steps, using a method of measurement and calculation. Hard going and sometimes deviating from classical transmission line theory, this slowly growing article will hopefully shed light on a difficult but intriguing subject.
A circuit description of a common base configuration pre-amp that can be used in local or remote powered modes.