A summary and tables of the LTE frequency band spectrum allocations for 3G & 4G LTE - TDD and FDD. Read more »
Mark Cundle, Head of Technical Marketing, RS Components looks at how to make cost effective printed circuit board designs that meet EMC requirements. Read more »
Essentials about the different types of capacitor that are available: performance, construction, specifications, parameters, advantages, disadvantages of the differnet capacitor types and where they are best used. Read more »
Summary of the advantages and disadvantages of frequency modulation, FM, detailing why it is used in certain applications and not others. Read more »
- Comparison of 8-QAM, 16-QAM, 32-QAM, 64-QAM 128-QAM, 256-QAM, etc
- LC Low Pass Filter Circuit
- OFDM -Orthogonal Frequency Division Multiplex - Tutorial
- What is Phase Shift Keying, PSK
Patrick Hanley, Marketing Manager at Atmel looks at capacitive techniques for interacting remotely with a user interface. Read more »
Facts of the day
10 March 2014
History - It was on this day in 1876 that Alexander Graham Bell sent the famous first words over his telephone system saying: "Mr Watson, come here. I want you." Also on this day, but in 1891 an undertaker by the name of Almon Strowger patented a device later known as the Stowger switch that led to the automation of telephone circuit switching.
Quote - Not everything that counts can be counted, and not everything that can be counted counts. - Albert Einstein
The way things are - If enough research is done then any theory can be supported.
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. Read more »
A summary or tutorial of the basics of the way electromagnetic waves are reflected, refracted and diffracted. Read more »
- What is MIMO - Multiple Input Multiple Output?
- Electromagnetic waves and antenna basics
- Folded Dipole Antenna
- Parabolic Reflector or Dish Antenna