Triad RF Systems
Exodus Advanced Communications Best in Class RF Amplifier SSPAs
 

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com

Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes App Notes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Homepage Thank you for visiting RF Cafe!
everythingRF RF & Microwave Parts Database (h2) - RF Cafe

how to make a passive RFID tag ? - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. If the folks at phpBB would release a version with integrated sign-in from the major social media platforms, I would resurrect the RF Cafe Forums, but until then it is probably not worth the effort. Regardless, there are still lots of great posts in the archive that ware worth looking at.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

iliana
Post subject: how to make a passive RFID tag ? Posted: Tue Jul 22, 2008 3:48 pm

Lieutenant

Joined: Tue Jul 22, 2008 3:14 pm
Posts: 3
Hello, I am e new member and this is my first post .I have some question about RFID tags.Could you illuminate me?It's the first time I work with something like that and it is possible to write down something incorrect, so be prepared!

I have a project on building a passive RFID tag with CMOS technology and I need some help about the circuit design.could you propose some expectant circuit designs or some info and soutces to look for?

What I've found so far, is that my tag must include the following parts:
an antenna,a backscatter modulator, a demodulator, a voltage multiplier,a voltage regulator and a rectifier. Do you think I need some more parts?
Can anybody experienced help me find such parts? I need a simple circuit,so as not to be confused ,and I'll have to simulate every part of the tag seperately on a VLSI program afterwards.
Witch technologies can you suggest to base on?

Thanks


Top

imodelit_moderator
Post subject: Posted: Wed Jul 23, 2008 4:10 pm

Captain


Joined: Wed Jun 20, 2007 3:01 am
Posts: 22
Dear iliana,

For thew antenna part, check this URL: http://www.maxource.com/html/RFID_antennas.html.


Best Regards,
imodelit Moderator


Top

iliana
Post subject: Posted: Wed Jul 23, 2008 4:47 pm

Lieutenant

Joined: Tue Jul 22, 2008 3:14 pm
Posts: 3
Thanks for responding, but with a quick view at it ,I think that this is not what I'm looking for.I want an antenna as a component of the RFID tag,so as to design it ,not the RFID reader antenna that detects the tags.It's so difficult to find the parts of the tag, bcause usually they buy it and do not deal with the design of the tag circuit...The only source I've got,is some papers of i-eee, though they are not always very detailed..


Top

FSomma
Post subject: Posted: Thu Jul 24, 2008 8:47 am
You might be interested on this book:

http://www.amazon.com/Design-Optimizati ... 589&sr=8-1

Take care


Top

iliana
Post subject: Posted: Sat Jul 26, 2008 6:24 am

Lieutenant

Joined: Tue Jul 22, 2008 3:14 pm
Posts: 3
Thanx FSomma .The index seems to be good,I'll order it.



Posted  11/12/2012
KR Electronics (RF Filters) - RF Cafe
ConductRF Phased Matched RF Cables - RF Cafe
Amplifier Solutions Corporation (ASC) - RF Cafe
 

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free