RF Wireless and Device Networking

Alcatel-Lucent Resource Center

Posted by on Nov 16, 2016 in RF-Resources, Wireless-Communications

Brochures, Case Studies, Data Sheets, Network Diagrams, Technical Articles, Technical Materials, Webcasts and White Papers related to Communications.

Alcatel-Lucent Resource Center

Formed from the merger of Alcatel and Lucent Technologies.........., At the core of this innovation is Alcatel-Lucent's research, which includes the world-renowned Bell Labs and Research & Innovation groups ......now part of Nokia

Bell Labs, one of the largest innovation and R&D houses in the communications industry. Bell Labs was awarded 7 Nobel Prizes and holds over 29,000 patents

LightRadio Antenna Module

"Tod Sizer, Head of Wireless Research for Alcatel-Lucent Bell Labs, talks about developing the lightRadio antenna module. lightRadio represents a new architecture where the base station, typically located at the base of each cell site tower, is broken into its components elements and then distributed into both the antenna and throughout a cloud-like network...."

Industrial Device Networking - MOXA

Posted by on Nov 11, 2016 in Device-Networking

Networking industrial devices over media such as RS-485, cellular networks and Ethernet. Device networking products, including device servers (serial-to-ethernet), industrial ethernet switches, etc.

Industrial Device Networking - MOXA

Products Include

Industrial Ethernet, RS-485 I/O, Industrial Wireless, Industrial Wireless LAN, Serial / USB Connectivity, Serial Device Servers, Embedded Networking, Industrial Computing, Embedded Computers, Wireless Embedded Computers, Fieldbus Products.

AWK-5232 Series - Industrial IEEE 802.11a/b/g/n dual-radio wireless AP/bridge/client

The AWK-5232 industrial a/b/g/n wireless AP/bridge/client is an ideal wireless solution for hard-to-wire situations and all mobile equipment that is connected over a TCP/IP network. It provides a faster connection and wider range than 802.11g models, with the connection noticeably stronger at a distance.

With two independent RF modules, the AWK-5232 allows two independent wireless connections over different frequencies, and supports a great variety of wireless configurations and applications.

Radiocalc or dBcalc - Conversions RF Engineering

Posted by on Nov 07, 2016 in RF-Resources

Besides classical functions and dB conversions, RadioCalc includes a converter of Power to field strength commonly used for EMC/EMS test-set-up. Also impedance can be represented as a function of reflection coefficient (somehow like an electronic Smith-chart). This and many other functions are obtained by clicking into the arrow of the "Conversion off" window.

Radiocalc - Convertisseur Radio Universel

dbcalc_actutem

Thanks to RadioCalc the different dB charts are obsolete by computing the ratios of Power (W) or Voltages (V) according to dB = 10*log(P2/P1) ou dB = 20*log(V2/V1).

Just for a trial : type 100/10 (or just 10) and push the dB button as the 'W' mode is chosen, the result will be 10 dB, then choose the 'V' mode by clicking in the V button (in the Quick dB window) push again dB, the result is now 20 dB.

From - Temcom - Consulting for test & measurement and electronics in France
(This was Earlier Radiocalc, i have now updated the link to the new site in France)

GSM World - Online face of GSM Association

Posted by on Oct 14, 2016 in Standards, Wireless-Communications

GSM (Global System for Mobile Communications: originally from Groupe Spécial Mobile) is the most popular standard for mobile telephone systems in the world.

GSM World - Online face of GSM Association - "The GSMA represents the interests of the worldwide mobile communications industry"

The GSM Association, its promoting industry trade organization of mobile phone carriers and manufacturers, estimates that 80% of the global mobile market uses the standard. GSM is used by over 3 billion people across more than 212 countries and territories. - GSM Wiki

GSM Technology for Mobile Communications

EDGE - GSM Evolution (EDGE) technology provides up to three times the data capacity of GPRS
HSPA - The set of technologies that defines the migration path for 3G/WCDMA operators worldwide
GSM - An open, digital cellular technology used for transmitting mobile voice and data services
GPRS - A very widely deployed wireless data service, available now with most GSM networks

dBi Corporation - Testing Laboratory

Posted by on Oct 10, 2016 in EMI-RFI, RF-Engineering-Service

A2LA-accredited EMC/EMI/ESD testing laboratory based in Lexington, Kentucky. They have done the FCC-/ CE-Marking-approval EMC/ EMI/ ESD tests for over 308 products developed by clients; bringing over 97% of them into compliance with both domestic and international laws and standards.

dBi Corporation - Testing Laboratory

The President, John R. Barnes, is a Professional Engineer (PE) licensed in the state of Kentucky, a NARTE-Certified Electromagnetic Compatibility Engineer (NCE)....

dbicorporation

Some Types of Testing Services they offer

Radiated and Conducted Emissions tests.
Magnetic Field Immunity tests.
Voltage Dip/ Voltage Interruption Immunity tests.
Electrostatic Discharge (ESD) tests.
Electrical Fast Transient/Burst (EFTB) tests.

My Test Engineering Years - John R. Barnes

He has written three books: Electronic System Design: Interference and Noise Control Techniques, which was published in English in 1987 and in Russian in 1990..

dBi Corporation
216 Hillsboro Ave, Lexington, KY 40511-2105, USA.