Rohde & Schwarz

What is QAM - All the Essentials

Read all about QAM, Quadrature Amplitude Modulation: what it is, how it works, where it is used and its advantages and disadvantages.


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.

Zener Diode Circuits and Applications

A summary or tutorial covering the essentials of the Zener diode or voltage reference diode used in many power supply and other circuits.


What is MIMO - Multiple Input Multiple Output?

MIMO - Multiple Input Multiple Output technology tutorial showing how MIMO uses multiple antennas to provide gains in channel robustness and throughput.

Facts of the day

2 September 2014

History - It was on 2nd September 1666 that the Great Fire of London broke out. It burned for over three days and destroyed much of what was then London including over 10 000 buildings.

Quote - All truths are easy to understand once they are discovered; the point is to discover them. Galileo Galilei

Fact - One ounce of gold can be drawn into eight kilometres of wire.


Current Sense Transformer Performance

Paul Lee, Director of Business Development, Murata Power Solutions UK, describes some techniques to employ to achieve best performance for current transformers used for monitoring, control and protection


Wi-Fi 802.11 Channels & Frequencies

List of Wi-Fi / WLAN / 802.11 bands, their channel frequencies and bandwidth, 2.4 & 5 GHz allocations worldwide, & summary of which WiFi channels can be used together. news from

GPS GLONASS, Galileo and BeiDou for Mobile Devices
GPS GLONASS, Galileo and BeiDou for Mobile Devices

Ivan G Petrovski
Location services are an increasingly important element for mobile handsets....
Read more . .

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