Hardware | Reader | Fixed Reader | UHF Fixed Reader
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| Narrow beam Reader |
| by Doug Raymond |
We need to be able to read individual RFID tags, without interference from adjacent tags. The distance between the reader and the tag will be ~3-10 ft. Adjacent tags may be as close as 4 feet. The application will be in a heavy industrial environment.
Are there readers and/or antennas that would provide a narrow enough beam.?
TIA |
| Question last updated on February 03, 2006, 21:17 PM |
| Total views: 2663 |
| Answer |
| by GAOEngineeringInc, Doug Raymond, jim eagleson |
Hello Tia,
our product team has confirmed that even though two tags are placed ajacently, reader can still pick up two unique ID's. If you want a reader for long distance reading, choose an UHF application. On the order hand if you do not require long distance reading, go with HF readers and tags as these are cheaper too.
Please take a look at our offers:
http://www.gaoengineering.com/index.php?main_page=index&cPath=63&zenid=f2c3e5f8fecb5e2d21bc21fa899ff72b
All of our tags can be customized to fit your needs and volume discount is available for certain products.
If you want to learn more about our products, please send us an inquiry to sales@gaoengineering.com, or send an online inquiry form here:
http://www.gaoresearch.com/customerinquiry/gaoengineering_customerinquiry.php
and please mention morerfid in your email. Thanks.
Regards,
Kevin Cheng
GAO Engineering Inc.
TIA,
It is next to impossible to do what you have requested at UHF since signals at this frequency will bounce around regardless of the original beamwidth.
At 3-4 feet, use of LF or HF tags can be made to work since your spacing is also 4 feet. Even here, though, you need to have the vendor demonstrate that he can do what you want before making any commitment.
At UHF, there is no "brick wall".
At 13.56 MHz or 125 kHz there is a "brick bubble" around the antenna so that one can sometimes use the edge of the "bubble" to restrict reading to a relatively small area, PROVIDING the situation is carefully controlled.
Jim Eagleson
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| Answer last updated on July 02, 2007, 00:57 AM |
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