Data Interface - Virtual Instrumentation, Device Networking.
Showing posts with label RF-Resources. Show all posts
Showing posts with label RF-Resources. Show all posts

Tuesday, September 26, 2017

Build RFID transmitter and receiver

Guide on how to build my own RFID transmitter and receiver?

Post by C1

You will find them here ...some entities misuse this technology, hence people have become less interested in this as it is invasive. Properly used this technology is an asset, example - inventory or asset tracking and management.

RFID Circuits - - Low Power RFID Transponder -  For some time railroad companies have been wrestling with the problem of tracking rail cars.

Need help in RFID circuit - Electro Tech -  need the circuit for RFID receiver and transponder and any useful information regarding RFID. I thought i would use PIC controller to find out the distance b/w the product and the reader.

Build RFID transmitter and receiver

RFID - - Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader's interrogating radio waves.

Fall 2004 RFID Honors Project - RFID can be categorized as low frequency or high frequency and as passive or active. This project looks mainly at low frequency passive RFID because it is the least expensive and the most common.

Low frequency passive RFID works by magnetic induction. A reader device generates an alternating magnetic field from a coil of wire. A tag also has a coil of wire that induces current from the magnetic field. This current provides power to the passive tag. The tag then sends back its own varying magnetic field which is read by the reader device.

This is an answer of mine to an old post - Tuesday 27 June 2006 

Thursday, August 24, 2017

RF Microwave and Wireless Projects

A RF related thread from my mailbox. First published in Circuits FAQ.

hi im a communications engineering student can u help me to find an idea for my secondary project. i want a hardware project that is related to for example wireless communications , microwave or fiber optics something like that can u help.

mail from MK

These may be useful ...

Cambridge Wireless Resources
"development and application of wireless and mobile technologies to solve business problems."

RF Microwave Projects

Look at these links too....

 Application Notes - RF Cafe -  Useful Learning Application notes on RF and Parts vendor sites.

New Wave Instruments - RF snd Microwave resources

A comprehensive collection of RF & microwave resources for wireless communication engineers. Includes tutorials, theory, design aids, circuit diagrams, products, and more.

First try out above links and google scholar, Then give me more specific ideas, so i can help you better.


Thursday, April 06, 2017

Electromagnetic Spectrum - Wavelengths

"Some insects, like bees, can see light of shorter wavelengths than humans can see."

This is something to Buzz about. This chart is excellent, a Pictogram. A small image with a Graphical, Complete and Concise expression of a Scientific Truth.

Electromagnetic Spectrum - Berkeley Lab

Radiation is energy that travels and spreads out as it goes-- visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays and gamma-rays.....

Electromagnetic Spectrum

Measuring the electromagnetic spectrum

Faraday cages are structures - as small as a shoebox or as big as a building - that protect what's inside from surrounding electromagnetic radiation (EM).

National High Magnetic Field Laboratory - Faraday Cage

Here is a Electromagnetic Spectrum Chart from - Southeastern Universities Research Association.

Monday, November 07, 2016

Radiocalc or dBcalc - Conversions RF Engineering

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

Radiocalc - Convertisseur Radio Universel

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)

Friday, July 08, 2016

Reference Charts RF µWave Communications - Anritsu

These charts provide Band Designation, RF Measurements Conversion Tables, RF Spectrum Bands, RF Connector Comparison Tables, S-Paramaters, the Electromagnetic Spectrum, Waveguide Designation, Power to Voltage Conversion,

Others are Spectrum Analyzer Conversion Factors, SWR ñ Reflection Coefficient ñ Return Loss, Power Measurements, Amplitude Modulation, Pulse Modulation, Frequency Modulation, and Bessel Functions. From - Anritsu

Reference Charts RF µWave Communications - Anritsu

Reference Charts for RF & µWave Communications - Anritsu

"Conversion tables for return loss, reflection coefficicient, and SWR with values for interaction of a small phasor (utility reference) expressed in dB related to the reference.

In microwave circuit design S-parameters are very useful for the full characterisation of any 2 port network. In contrast to z,y and h-parameters, which require broadband short circuited and open circuited connections at the TEST ITEM for the measurement,

S-parameters are determined with input and output terminated with the resistive characteristic impedance of test systems (generally 50 ohms in a coaxial line system). Parasitic oscillations in active devices are minimised when these devices are terminated in resistive loads."

Tuesday, July 05, 2016

Data, Media and Telecommunications Standards

Wireless Communications now have voice, data, media. It has capability of the Internet, making a portable device part of the World Wide Web. There are companies and institutions that are making this utopia of a connected world possible with the systematic approach.

The Communications Network

Now with IoT, WSN and M2M a complexity arises. Robots, Drones, Automobiles and Machines have wireless connectivity with an IP address or a Phone Number. All this is possible when we think of technologies more like Wi-Fi and WiMax merging with mobile-cellular systems. We have to abandon the Towers and go for Modular Daisy Chain of Repeaters on Street Poles and Fiber Optic Nodes. Maybe like these folks say LightRadio Antenna Module

ETSI - European Telecommunications Standards - ETSI produces globally-applicable standards for Information and Communications Technologies (ICT). Includes - Fixed, mobile, radio, converged, broadcast and internet technologies.

ITU-T - Infocommunications Standards - "ITU-T Recommendations are defining elements in information and communication technology (ICT) infrastructure. Whether we exchange voice, data or video messages, communications cannot take place without standards linking the sender and the receiver. See " Telecommunication Standardization Bureau" TSB

CDG - 3G Wireless CDMA Development - "The CDMA Development Group (CDG), founded in December 1993, is an international consortium of companies who have joined together to lead the adoption and evolution of 3G CDMA wireless systems around the world." See also CDMA Technology

3GPP - Mobile Broadband Standard - "The original scope of 3GPP was to produce Technical Specifications and Technical Reports for a 3G Mobile System based on evolved GSM core networks …" Global System for Mobile communication (GSM), GPRS and EDGE.

IEEE - Broadband Wireless Access Standards - "The IEEE 802.16 Working Group on Broadband Wireless Access is creating the IEEE 802.16 family of WirelessMAN Standards for Wireless Metropolitan Area Networks."

Sunday, June 12, 2016

RF Microwave and Wireless Data Communication

The days of Voice Communication are coming to an end. In fact it has been happening in the background all along. It is Digital Replacing Analog Everywhere. Voice is now data. In the future Voice Communication is just an App you need to buy as an option.

Whatever the struggle between technologies, The future communications will be just Broadband Wireless Devices with Voice, Data and Web all in one. The intermediate technologies we see today, the Transitional Technologies are part of a Large Learning Curve. The future may be more of Optics, WiMax and more like Any Device can do Anything. Not Convergence but more an Intermeshed Collage.

RF Microwave and Wireless Networks
M2M, Communications, WSN, IoT, Wi-Fi, Device Networking, Fiber Optics.

RF Microwave and Wireless Data Communication

This RF is also a Tough Science and needs Authentic and Highly Skilled Engineers to design and develop the technologies for the future. The Budget of the Average consumer will be less, the appetite enormous. The Business Models complex and very challenging. The customer potential is 100% and it will work only if it is affordable and planned carefully. It is not as easy as it looks.

Read and Learn More -

Time and Frequency Circuits and Articles including frequency synthesis and conversion.Spreadsheets/ Programs to calculate pll response, phase noise under vibration, and others.Wenzel Associates Technical Library

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

Cellular and PCS phones, pagers and two-way radios, radio spectrum. Wireless Telecommunications FCC

"The IEEE WCET certification shows that the individual has demonstrated mastery of the internationally recognized body of wireless communication knowledge…" IEEE WCET - Wireless Communications

RF chips, white papers, FCC, a variety of specialty books on various wireless/ spread spectrum / RF areas, and a wide range of other information.Spread Spectrum Scene Online

A collection of exceptional resources that will prove useful in your spread spectrum and other wireless projects, ranging from spread spectrum & CDMA tutorials, theory, and circuit diagrams, to development tools, OEM products, and consultants. Spread Spectrum and RF Resources

More Reading
With the Wi-Fi and WiMAX becoming essential in Intranet and Internet Networks, and as new low power consumption tablets, netbooks and webbooks become commonplace; RF Microwave learning is important for designers.

It is almost like, every person is a potential user for a Handheld Computer. Which is not only a communicator but more important, News, Knowledge and Information is at his fingertips. This is an empowerment that makes a better worker, student, citizen or a businessman.

delabs Technologies - Ideas of delabs - 2010

Wednesday, January 27, 2016

Spread Spectrum Scene Online

RF chips, white papers, FCC, a variety of specialty books on various wireless/ spread spectrum / RF areas, and a wide range of other information.

Spread Spectrum Scene Online

Spread Spectrum Scene Online is managed by Pegasus Technologies, Inc. A small design house located in East Tennessee. We do custom RF / wireless design work and also offer a variety of Rf modules that can be incorporated into your designs.

The PTSS2011 902 - 928 MHz Transceiver

The PTSS2011 902 - 928 MHz Transceiver

The PTSS2011 is a compact, ready-to-use, FCC-certified Frequency Hopping Spread Spectrum transceiver that operates in the license-free 902-928 MHz band. It is ideal for OEM applications that require a wireless data connection, and it can also be easily integrated into existing systems.

Sections - Design Topics, Reference Material, Design Tools, RF Topics, Wireless Topics.

Monday, January 18, 2016

Spread Spectrum and RF Resources

A collection of exceptional resources that will prove useful in your spread spectrum and other wireless projects, ranging from spread spectrum & CDMA tutorials, theory, and circuit diagrams, to development tools, OEM products, and consultants.

Spread Spectrum and RF Resources

Spread Spectrum and RF Resources

RF Resources - A comprehensive collection of RF & microwave resources for wireless communication engineers. Includes tutorials, theory, design aids, circuit diagrams, products, and more.

New Wave Instruments has been the leading manufacturer of PN sequence (PRBS) generators for over two decades. Our generators are used in laboratories, factories, and universities throughout the world for spread spectrum and CDMA research, product development, and system test.

Saturday, May 16, 2015

Alcatel-Lucent Resource Center

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 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

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...."

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)."