Rohde & Schwarz

A4WP Wireless Charging

Details of the A4WP wireless charging standard and how it differs to other similar standards.

DIAC - Diode Alternating Current, Tutorial

DIAC - DIode Alternating Current summary and tutorial giving explanations of technology, structure, operation, and use in various switching circuits.


What is VoLTE, Voice over LTE

Details of VoLTE Voice over LTE the IMS IP Multimedia Subsystem based technology supported by GSMA for providing a unified format for Voice traffic over LTE channels.


Yagi Feed Impedance & Matching

Notes and details of the essentials of Yagi antenna feed impedance, what governs it and the ways to match a Yagi antenna.


Frequency Modulation Essentials

Essentials of Frequency Modulation, FM, what it is, how it works, bandwidth sidebands and all the relevant details.

Facts of the day

27 November 2014

History - It was on the night of 27th November 1923 that the first transatlantic short wave radio contact was made. It took place between radio hams: Leon Deloy (8AB) in France and Fred Schnell (U1MO) in the USA.

Quote - Before you criticize someone, walk a mile in their shoes. That way, you'll be a mile from them, and you'll have their shoes. - Jack Handey, Deep Thoughts

Fact - Jack Kilby's first integrated circuit contained just one transistor. Today the Intel Itanium 2 contains 410 million. news from

Using Digital Control Designs for Stable Power Supplies
Find out how to achieve stable power supply designs with fast transient response by using digital control techniques in this whitepaper from Intersil.

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On-line: LTE/SAE System Overview
An on-line course providing all the key details of the LTE cellular system

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The Art of Electronics
The Art of Electronics

Paul Horowitz & Winfield Hill
Now in Kindle, this is the classic electronics book. The Art of Electronics has...
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