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