Maker Pro
Maker Pro

2.45GHz RFID reader

T

Terry Given

Jan 1, 1970
0
Mikko said:
Another allegedly chinese one is "Man who waits for roast duck to
fly into mouth must wait very, very long time".
ROTFLMAO!


Please figure out which RFID protocol you are interested in, then
go through the IC manufacturer's catalogs (perhaps google) to find
whether there are complete IC solutions available. What's available
and what's not changes continuosly, and you get the most up-to-date
answers only by looking yourself. If you can't find a complete
solution, figure out which radio IC's can implement most of the
functionality you will need, and design around those. It takes some
work, but so it has taken for the rest of us, too.

Regards,
Mikko
 
P

Paul Burridge

Jan 1, 1970
0
nihao xiangyu,

ignore Paul Burridge - most people do.

Unfortunately a lot of people on this ng like to post drivel. There are
a lot of very smart people who post gems though, so its worth sifting
through crap.

Hey, waster! I'm only trying to protect well-intentioned (though
possibly gullible) original thinkers and patent-holders from the
pestilence of foreign mass-imitation. GFY if you can't handle that.
 
P

Paul Burridge

Jan 1, 1970
0

Listen, pal, when you're through shooting your mouth off laughing
inanely at nothing, like all morons do, learn to trim the f*cking F/U
and save bandwidth.
 
Hi all,
I'm depressive to see that my post brought a war. Sorry for my
impoliteness in the 3rd post, though I was very angry then.
I don't think this is a place to discuss whether or not we should do RF
tag and reader. It is determined by the local market, national
conditions and many other issues, and not the business of our
engineers. My job is just to design a reader. I have some experiences
in 13.56MHz RFID but nothing in UHF. After searching main IC
manufactures' product web pages, I found little information of 2.45G
transmitter chips, besides some power amplifiers. And in some BBS and
forums, the popular topics are still on 13.56M. Being unfamiliar with
this field, I want some information about my target. I don't want who
can show me any schematics or design secrets. I've own power and
intelligence to complete the task.

To Mikko Kiviranta:
Special thanks to you for your valuable information. Our design is an
ISO 18000-4 passive tag. It seems that major modules of reader should
be implemented by discrete devices?

To some ones:
Please don't induce a conclusion from empty. I confess that many
reverse-engineerings are undertaking, in China, but also in the whole
world, including US and EURO. But do you think one can produce a 2.45G
chip just by copying? Or even, by some pestilent group posts?

To those who can speak Chinese:
Wo3 hen3 gao1 xing4 zai4 zhe4 li3 neng2 kan4 dao4 zhong1 wen2 .
Xi1 wang4 neng2 he2 ni3 men2 jiao1 peng2 you3.
Na4 ge4 cheng2 yu3 de pin1 yin1 shi4: yi1 lao3 mai4 lao3
 
T

Terry Given

Jan 1, 1970
0
Paul said:
Hey, waster! I'm only trying to protect well-intentioned (though
possibly gullible) original thinkers and patent-holders from the
pestilence of foreign mass-imitation. GFY if you can't handle that.

How successsful has your valiant stand been so far?

I used to have a cat that thought defending the road from traffic was a
smart idea.

Cheers
Terry
 
K

Kiviranta, Mikko

Jan 1, 1970
0
Our design is an
ISO 18000-4 passive tag. It seems that major modules of reader should
be implemented by discrete devices?

I don't know - the situation changes continuously. Philips,
for instance, has announced to have the UCODE 2.45GHz IC family
in their portfolio of devices:
http://www.semiconductors.philips.com/news/content/file_987.html

but among the available products I can only find tag IC's
http://www.semiconductors.philips.com/markets/identification/products/ucode/index.html

which I intepret that either they don't have the reader ICs finished
yet, or don't want to put them publicly available.


Another player in the market, Atmel, also seems to list the
low-frequency RFID IC's only in their web page. Still, they have
been working on higher-frequency devices for long-enough time
to have them internally available:

http://www.atmel.com/products/RD/prod_palomar.asp
Karthaus & Fischer, IEEE J. Solid-State Circ., vol38 no10 p1602


Still another manufacturer, EM Microelectronic, again seems to list
the EM4223 tag IC and no reader ICs.


Regards,
Mikko
 
Top