The physical layer of any radio based system defines much about its performance. Read all about the UMTS physical layer / radio interface: chief technologies, performance, specifications, operation . . .
Circuit and design details for an operational amplifier, op-amp inverting amplifier configuration, allong with its use as a summing amplifier / virtual earth mixer.
A summary of the diode specifications and diode parameters and ratings seen in datasheets with explanations of what they mean.
Multi-page tutorial describing FM demodulation, the demodulation process for frequency modulation and the various circuits and techniques that can be used.
All the essentials in a tutorial about waveguide feeders or transmission lines from the RF theory to practical applications in microwaves.
30 July 2015
History - It was on this day in 1889 that Vladimir Zworykin was born in Russia. He invented the iconoscope and as a result was often called the 'Father of Television.' on this day in 1959 that Robert Noyce's patent for integrated circuit technology was filed in the USA. Along with Jack Kilby's ideas and patent this started the age of semiconductor integration.
Quote - Chance favours the prepared mind. Louis Pasteur
Fact - Total production of the type TM valve (tube) made in France during the First World War exceeded 100 000. By the end of the war they were being produced at a rate of over 1000 a day.
Key facts about the basics of the spectrum analyzer tracking generator and how it can be used as a scalar RF network analyzer.
A simple to use calculator that converts two power levels into the decibel ratio.