Rohde & Schwarz


A summary or tutorial about the basics of the photodarlington transistor, its applications, construction and how it is different to the phototransistor.

Dipole Antenna Feed Impedance

Notes and overview about the feed impedance of a dipole antenna - what affects it, how it may be determined, & other key details.


4G LTE-Advanced Tutorial

Tutorial about 4G LTE-Advanced detailing how it is based on the basic 3G LTE and how the extra speed is obtained and how the additional features work.


PIN Diode Variable RF Attenuator Circuit

A constant impedance circuit design for variable RF attenuators using PIN diodes for use in a variety of RF design applications including programmable RF attenuators..

Facts of the day


Op Amp Gain Calculations & Tutorial

Essential circuit details, equations and calculations for operational amplifier gain for generic, open and closed loop circuit configurations.


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.

17 October 2016 | Martin Hägerdal | Ericsson

Data Centre Power Supply Hardware & Software Trends

Data centres are becoming increasingly important as the amount of data being stored and accessed rises exponentially - but one forgotten element is the data centre power supplies.

data centres news from

Advances in Multi-Band Microstrip Filters
Advances in Multi-Band Microstrip Filters

Vesna Crnojevic-Bengin (Editor)
This book entitled: Advances in Multi-Band Microstrip Filters combines the work...
Read more . .

USA bookstore UK bookstore
Online - Effective Spectrum Analyzer Measurements
Learn how to make spectrum analyzer measurements at RF and microwave frequencies

More training courses

Cost-Efficient & Extensible RF Spectrum Monitoring & Management
Discover how to use high-performance portable analyzers, open software and PC integration for field analysis, remote deployments, and efficient and effective spectrum management.

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