Electronics industry news

Electronic product launches

Formulae and Data

Temperature Coefficient of Resistance

Brush up on what the temperature coefficient of resistivity is, the formulae or equations, units, and find our table of values. Read more . . .

• SUMMARY: Resistivity
• DATA: Resistivity table

Satellite Technology

Satellite Communications Systems

Since the first satellites were launched into orbit, one of their major applications has been to provide communciations links. They have become particalarly valuable in providing communications in remote areas where terrestrial links are not viable as well as providing direct broadcast television. Read more . . .

More in CATEGORY

• SUMMARY: Satellite phone systems
• SUMMARY: Iridium phone system

RF Topics

Types of Modulation and Radio Signal

There are many different ways in which a radio carrier or RF signal can be modulated. Although there are basically two different ways, amplitude and angle modulation (which includes a frequency and phase modulation) there are many variations on the theme. Each type has its own advantages and disadvantages. Read more . . .

• TUTORIAL: Amplitude Modulation, AM
• TUTORIAL: Frequency Modulation, FM
• TUTORIAL: Phase Modulation, PM

Formulae and Data

Essential Elements of Inductance

Inductance is a key electrical and electronic phenomenon. However, can you remember all the equations and features. Brush up on your knowledge with our pages of key facts, formulae and data. Read more . . .

• SUMMARY: Self-inductance

Technology History

History of the Coherer

The coherer was one of the earliest types of detector used with early wireless sets. Although very insensitive and difficult to use in the presence of interference, it was the best detector for many years being an essential element within many radio communication systems Read more ...

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• HISTORY: History of the Radio Receiver

RF Topics

Elliptic / Cauer Filter

Of all the RF filter formats, the Elliptic or Cauer filter provides the greatest selectivity for the given number of elements. Although it has ripple in both pass-band and stop-band, it is used in many RF applications where selectivity is paramount. Read more . . .

More in CATEGORY

• SUMMARY: Filter design basics
• SUMMARY: HPF design
• SUMMARY: Butterworth calculations
• SUMMARY: Chebyshev filter

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 Self Organising Networks (SON), By Seppo Hamalainen, Henning Sanneck, & Cinzia Sartori

• UK Bookshop
• USA Bookshop

RF Topics

Centralise Your Adaptive Traffic Management

Chris Koopmans, Chief Operating Officer, Bytemobile looks at the key issue of traffic management on modern cellular telecommunications networks. Read more...

RF Topics

Locating Passive Intermodulation, PIM Faults

Paul Holes, RF and Microwave Field Applications Engineer, Anritsu looks reducing the cost of repairing passive intermodulation, PIM faults in cellular base stations, Read more...

• TUTORIAL: PIM basics
• TUTORIAL: PIM testing

Electronics Components

Capacitor Types

There is more to capacitor technology than meets the eye. There are many different types of capacitor and with their technology advancing swiftly, their performance is increasing - more capacitance per unit volume, higher stability, higher voltages and much more. Discover what types to use and more about their properties in our tutorial pages. Read more . . .

• SUMMARY: Capacitor applications / uses
• SUMMARY: Polystyrene capacitor

Electronic Components

P-RAM, Phase change RAM / PCM Phase Change Memory

A new form of semiconductor memory called Phase change RAM, P-RAM, or Phase Change Memory, PCM is being developed and promises some significant advantages once it can be commercialised. Read more . . .

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• TUTORIAL: DRAM
• SUMMARY: SDRAM

Wireless

Bluetooth Technology

Bluetooth technology is now well established, providing communications for many short range applications - possibly the most widely used is for wire-less headsets for mobile phones. With the growing need for increased data rates for wireless communications for short ranges, Bluetooth has released new updates to the standard as well as a low energy version. Read more . . .

More in CATEGORY

• SUMMARY: Bluetooth radio interface & modulation
• SUMMARY: Bluetooth host - L2CAP, SDP, GAP
• SUMMARY: Bluetooth low energy, Wibree

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