Data Interface - Virtual Instrumentation, Device Networking.

Tuesday, April 14, 2015

RF Cafe - Microwave & Wireless Engineering

Resources for Radio, Radar, RF, Microwave, & Wireless Engineering. Collection of links to various application notes for different RF Vendors. Links to RF equations, technical data sheets, math notes and much more.

RF Cafe - Microwave & Wireless Engineering

Some important areas
  • RF Engineering Calculators
  • Electrical / Electronics Conversions, Formulas & References
  • Design Data Resources
E-flite Mini Pulse XT - Brushless ESC Waveform - RFCafe

E-flite Mini Pulse XT - Brushless ESC Waveform

This waveform shows the square waves that drives one of the three phases at a relatively low throttle setting (coming from the brushless speed controller). The peak amplitude is constant for all speeds.

"Much more than just a self-serving video of my new R/C airplane flight agility, this model represents a plethora of modern electronics. Although the radio control system in this plane is a standard narrow band FM variety on 72.170 MHz (as opposed to my 2.4 GHz, spread spectrum system), the motor is a state-of-the-art 3-phase brushless model (E-flite 450)with a sensorless electronic speed control (E-flite EFLA331, 20 A)."

Sunday, April 12, 2015

Ember - Wireless Semiconductor Solutions

Ember's ZigBee wireless networking systems - chips, software and tools - enable Energy Technologies - enertech - help consumers, businesses and utilities to better manage energy resources, save cost and preserve the environment.

Ember - Wireless Semiconductor Solutions

Ember offers the industry's most advanced, complete and integrated ZigBee system - including chips, software and tools.

EM35x System-on-Chip - Ember

EM35x System-on-Chip (SoC)

The EM351 and EM357 SoCs are tightly integrated with EmberZNet PRO, a ZigBee compliant mesh networking software which is the most deployed ZigBee platform in the market..

(This post has been corrected 2012,  Ember appears to be part of Silicon Labs.)

Tuesday, April 07, 2015

Wireless Gigabit Alliance - WiGig 60 GHz

Interconnects Devices and Computers on WiGig technology for High Speed Media Rich DataCommunications. Multi-gigabit wireless communications using the unlicensed 60 GHz spectrum.

The WiGig specification allows devices to communicate without wires at multi-gigabit speeds. It enables high performance wireless data, display and audio applications that supplement the capabilities of previous wireless LAN devices. WiGig tri-band enabled devices, which operate in the 2.4, 5 and 60 GHz bands, deliver data transfer rates up to 7 Gbit/s, about as fast as an 8-band 802.11ac transmission, and more than 11 times faster than the highest 802.11n rate, while maintaining compatibility with existing Wi-Fi devices.

Wireless Gigabit Alliance - WiGig 60 GHz

The 60 GHz signal cannot typically penetrate walls but can propagate off reflections from walls, ceilings, floors and objects using beamforming built into the WiGig system. When roaming away from the main room the protocol can switch to make use of the other lower bands at a much lower rate, both of which can propagate through wall

"The Wi-Fi Alliance and the Wireless Gigabit Alliance (WiGig Alliance) today announced a cooperation agreement for multi-gigabit wireless networking" - Wi-Fi & WiGig cooperate

WiGig Certified Multi-gigabit, low latency connectivity. Coming in 2016.

WiGig Certified Multi-gigabit, low latency connectivity.

WiGig version 1.0 specification Includes data transmission rates up to 7 Gbps. Backward compatible with the IEEE 802.11 standard.

The WiGig specification will allow devices to communicate without wires at multi-gigabit speeds. It enables high performance wireless data, display and audio applications that supplement the capabilities of today's wireless LAN devices.

WiGig gets spec and Alliance endorsement

"WiGig offers connections of up to 7Gb/sec, but operating at the top end of the dial, 60GHz, makes for very short range. WiGig will carry over about 10 meters in ideal conditions,….."