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Electronic Components
Laser Diode Technology Tutorial
Laser diodes offer a cheap and easy solution for applications where coherent light is required. Laser diode technology has developed to a stage where the diodes are cheap and reliable as well as offering high levels of specification. This means that they have become a popular choice for many applications ranging from high capacity data communications links to optical storage. Read more . . .
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Antennas and Propagation
MIMO Technology
MIMO - Multiple Input Multiple Output - is a system used to provide improvements in link quality and link data throughput. Now that the processing power is available, it is being used in everything from Wi-Fi to the 4G cellular system LTE. Read more . . .
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Test and Measurement
PCB Inspection Technologies - AOI & AXI
PCB inspection systems including automatic optical inspection, AOI and automatic X-ray inspection, AXI are two technologies that are essential cornerstones of the electronics PCB manufacturing. They enable manufacturing defects to be found as soon as possible in the manufacturing process as well as providing feedback to enable the process to be optimised. Read more . . .
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Cellular Telecoms
Network APIs - the foundation of innovation
Mark Windle, Head of Marketing at OpenCloud, explains how operators can perfect the introduction of network API exposure. Read more...
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Book shop
Featured Book
Check out this month's featured book in our bookshop, along with many other interesting volumes for the engineer.
This month's title is: LTE Air Interface Protocols, By Mohammad T. Kawser.
RF Topics
Thermal Noise Formulae & Calculator
The effects of thermal noise often need to be calculated for RF applications. Refer to the formulae or use our thermal noise calculator to determine noise levels in volts or dBm. Read more . . .
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Circuits & Modules
RC-Twin T Notch Filter Circuit
Can you remember some of those simple but useful circuits? Here is a simple RC twin T notch filter circuit consisting of just three resistors and three capacitors. Read more ...
Test and Measurement
Spectrum analyzer tutorial
Spectrum analyzers are one of the key tools for RF development, maintenance and repair engineers. Using a spectrum analyzer it is possible to see a plot of a signal in the frequency domain, showing the frequencies and amplitudes of the signals as a plot of frequency and amplitude. In this way it is possible to see exactly what is being generated and radiated. Read more . . .
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RF Topics
RF Attenuators
RF attenuators are used in many RF designs to reduce signal levels and also to ensure that the correct impedance matches are obtained. Resistive ones can be made from just three resistors, while variable ones using PIN diodes use a few more. Read more . . .
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Cellular Telecommunications
dPMR - What You Need to Know
dPMR - digital private, personal, professional mobile radio is a relatively new standard that is coming to the PMR market. Offering low cost but effective communications, this standard is built around a narrowband FDMA technology to provide very spectrum efficient operation.
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Most popular articles:
Articles by industry experts
Current VoLTE Development and Deployment2012 Predictions & Trends for Cellular / Mobile Industry
Applying NFC to Real World Applications
Flo Forum - Technology Trends
Practical Applications for Distributed Antenna Systems
Facts of the day
8 February 2012
History - It was on this day in 1834 that Dmitri Ivanovich Medeleyev, the Russian chemist was born. He developed the idea for the periodic table of elements.
Quote - There never was a good war or a bad peace. - Benjamin Franklin
Fact - Hedy Lamarr, the Holywood actress was the co-inventor of the frequency hopping technique used in radios and mobile phones to avoid interference and jamming. (see the article on her under the Radio History section of this site)
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