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2.45GHz RFID reader

Hi, all:
I'm going to design a 2.45GHz RFID reader. Are there any IC chips
available? Can anyone give me some informations and suggestions?
Thanks alot

X.Y Yang
 
J

Jim Thompson

Jan 1, 1970
0
Hi, all:
I'm going to design a 2.45GHz RFID reader.
Why?

Are there any IC chips
available? Can anyone give me some informations and suggestions?
Thanks alot

X.Y Yang

The readers are provided by the tag manufacturers.

...Jim Thompson
 
I

Ian Stirling

Jan 1, 1970
0
REASON: Our company will be a tag manufacturer

Well, ask the people who will be making the transmitters what format the
tags transmit in (there is not only one) and go from there.
 
M

Mikko Kiviranta

Jan 1, 1970
0
Well, ask the people who will be making the transmitters what format the
tags transmit in (there is not only one) and go from there.

ISO18000-4 is the best bet for the format, even though we are working
on the Palomar protocol also. But RFID is a sensitive area - I doubt
that you may not get many useful answers from people protecting their
trade secrets.

Regards,
Mikko
 
P

Product developer

Jan 1, 1970
0
REASON: Our company will be a tag manufacturer

Again... Why?

You will be among a million other tag and reader manufacturers in a
well established marketplace.

If you are having to ask about the availability of chips to to do the
R.F. side of the reader you are very likely unaware of the challenges
you face in backsplatter tag energizing and reading.

I would hire a good R.F. consultant with prior experience in the art.
 
J

Jim Thompson

Jan 1, 1970
0
Again... Why?

You will be among a million other tag and reader manufacturers in a
well established marketplace.

If you are having to ask about the availability of chips to to do the
R.F. side of the reader you are very likely unaware of the challenges
you face in backsplatter tag energizing and reading.

I would hire a good R.F. consultant with prior experience in the art.

Read :)-)) between the lines... someone has reverse-engineered a tag
chip, but forgot they needed to also steal a reader ;-)

SE Asia has no concern with patents or copyrights).

Scum!

...Jim Thompson
 
P

Paul Burridge

Jan 1, 1970
0
ISO18000-4 is the best bet for the format, even though we are working
on the Palomar protocol also. But RFID is a sensitive area - I doubt
that you may not get many useful answers from people protecting their
trade secrets.

Yeah, and someone ostensibly posting under a Chinese name would likely
as not carry all those nice trade secrets back to Cathay and next
year, we'd all be deluged with trillions of RFID tags of Chinese
manufacture. ;-)
 
Thanks for all your replies, though almost useless. Is the purpose of
this group to discuss circuit design? You might save your typing by
ignoring my posts or saying 'Oh, it's secret and I will not tell you'.
And a question:
Are all of your chips or circuits invented by yourself and unique in
the world?
 
P

Product developer

Jan 1, 1970
0
Jim Thompson said:
Read :)-)) between the lines... someone has reverse-engineered a tag
chip, but forgot they needed to also steal a reader ;-)

SE Asia has no concern with patents or copyrights).

Scum!

...Jim Thompson

I failed to look at his name. I believe you are correct as to his
intentions but with all the established players in this market, even
in Asia, I fail to see how anyone can compete. Selling tags for EAS
applications is like selling cloth's hangers. It's a penny here, penny
there commodity.

Now active tags are a whole different story as you well know. I am
currently working on a long range (100 meter+) Zigbee protocol design
to work in a Mesh.
 
I

Ian Stirling

Jan 1, 1970
0
Thanks for all your replies, though almost useless. Is the purpose of
this group to discuss circuit design? You might save your typing by
ignoring my posts or saying 'Oh, it's secret and I will not tell you'.
And a question:
Are all of your chips or circuits invented by yourself and unique in
the world?

It's a meaningless question.
There are several RF tag protocols, and lots of special ones.
You actually do need to find out what the RF tag transmits, in
order to be able to specify a reciever.
 
M

Mikko Kiviranta

Jan 1, 1970
0
I don't know about all, but many are. We made a passive tag for
870 MHz with 1kb flash memory and 4 m readout distance last year
(with 0.5W radiated power, now the regulations allow more), but the
ICs are not publicly available.
It's a meaningless question.
There are several RF tag protocols, and lots of special ones.
You actually do need to find out what the RF tag transmits, in
order to be able to specify a reciever.

There may be several protocols, but *the* protocol at 2.45GHz is
probably going to be ISO 18000-4. It would help, though, if Xiangyu
specified what protocol he has in mind, ISO or something else. And
whether it is a passive or active tag. At the time I started the
2.45GHz design I was not able to find complete RFID IC's
and mis-used other short-range radio IC's instead. I know that at
least Philips Semiconductors has been active with the ISO 18000 -
they may have something publicly available by now.

Regards,
Mikko
 
M

Mikko Kiviranta

Jan 1, 1970
0
I have no time to squarrel here. A chinese idiom is very suitable to
you: take advantage of one's seniority to be a rascal

Another allegedly chinese one is "Man who waits for roast duck to
fly into mouth must wait very, very long time".

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
 
S

Spehro Pefhany

Jan 1, 1970
0
I have no time to squarrel here. A chinese idiom is very suitable to
you:
take advantage of one's seniority to be a rascal

Great! Can you post the Pinyin? ;-)


Best regards,
Spehro Pefhany
 
T

Terry Given

Jan 1, 1970
0
Thanks for all your replies, though almost useless. Is the purpose of
this group to discuss circuit design? You might save your typing by
ignoring my posts or saying 'Oh, it's secret and I will not tell you'.
And a question:
Are all of your chips or circuits invented by yourself and unique in
the world?

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.

Cheers
Terry
 
T

Terry Given

Jan 1, 1970
0
I have no time to squarrel here. A chinese idiom is very suitable to
you:
take advantage of one's seniority to be a rascal
LOL
 
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