2.45GHz RFID reader

  • Thread starter xiangyu.yang@gmail.com
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xiangyu.yang@gmail.com

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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
 
On 24 Nov 2004 19:04:10 -0800, "xiangyu.yang@gmail.com"
<xiangyu.yang@gmail.com> wrote:

Hi, all:
I'm going to design a 2.45GHz RFID reader.
Click to expand...
Why?

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

X.Y Yang
Click to expand...
The readers are provided by the tag manufacturers.

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
REASON: Our company will be a tag manufacturer
 
xiangyu.yang@gmail.com <xiangyu.yang@gmail.com> wrote:
REASON: Our company will be a tag manufacturer
Click to expand...
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.
 
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.
Click to expand...
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
 
On 25 Nov 2004 00:01:34 -0800, "xiangyu.yang@gmail.com"
<xiangyu.yang@gmail.com> wrote:

REASON: Our company will be a tag manufacturer
Click to expand...
And where did the tag _design_ come from ?:)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
 
"xiangyu.yang@gmail.com" <xiangyu.yang@gmail.com> wrote in message news:<1101369694.931145.279190@c13g2000cwb.googlegroups.com>...
REASON: Our company will be a tag manufacturer
Click to expand...
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.
 
On Thu, 25 Nov 2004 18:49:51 +0200, Mikko Kiviranta
<Okkim.Atnarivik@iki.fi.invalid> wrote:

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.
Click to expand...
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. ;-)
--

"What is now proved was once only imagin'd." - William Blake, 1793.
 
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?
 
xiangyu.yang@gmail.com <xiangyu.yang@gmail.com> wrote:
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?
Click to expand...
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.
 
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

Jim Thompson wrote:
On 25 Nov 2004 12:27:43 -0800, jdurban@vorel.com (Product developer)
wrote:

"xiangyu.yang@gmail.com" <xiangyu.yang@gmail.com> wrote in message
news:<1101369694.931145.279190@c13g2000cwb.googlegroups.com>...
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.

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
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
Click to expand...
 
Are all of your chips or circuits invented by yourself and unique in
the world?
Click to expand...
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.
Click to expand...
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
 
On 26 Nov 2004 02:01:41 -0800, the renowned "xiangyu.yang@gmail.com"
<xiangyu.yang@gmail.com> wrote:

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
Click to expand...
Great! Can you post the Pinyin? ;-)


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
xiangyu.yang@gmail.com wrote:

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?
Click to expand...
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
 
On Sat, 27 Nov 2004 11:45:13 +1300, Terry Given <my_name@ieee.org>
wrote:

xiangyu.yang@gmail.com wrote:

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
Click to expand...
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.
--

"What is now proved was once only imagin'd." - William Blake, 1793.
 
On Fri, 26 Nov 2004 15:27:17 +0100, the renowned "Frank Bemelman"
<f.bemelmanx@xs4all.invalid.nl> wrote:

"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> schreef in bericht
news:8vceq0h76haie1uus5rb4ggu62fd24bmqk@4ax.com...
On 26 Nov 2004 02:01:41 -0800, the renowned "xiangyu.yang@gmail.com"
xiangyu.yang@gmail.com> wrote:

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? ;-)

Duibuqi, wo bu tai hui xie pinyin...
Click to expand...
Wo3 gao1 xing4 ji2 le!
 
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