Radio Frequency Identification Activation
US-2017323190-A1 · Nov 9, 2017 · US
RFID system with configurable RF port
US8933787B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933787-B2 |
| Application number | US-201213532826-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2012 |
| Priority date | Jun 26, 2012 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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An active RFID tag has an antenna inside RF-blocking enclosure having a port with a selected shortest dimension. An RFID reader located outside the enclosure at a reader position transmits a downlink RF signal through the port as a directional RF signal on a downlink carrier frequency corresponding to a downlink wavelength smaller than the selected shortest dimension. The port is selectively configured so that the directional downlink RF signal can pass through the port in an access mode during a selected access time interval and are attenuated by at least 60 dB in a restricted mode during a selected restricted time interval that does not overlap with the access time interval.
First claim
Opening claim text (preview).
The invention claimed is: 1. An RFID system, comprising: a) an RF-blocking enclosure having a port with a selected shortest dimension, the enclosure configured so that a downlink RF signal of a selected downlink power passing through the port from a selected direction provides a received power at a selected antenna location in the enclosure; b) an active RFID tag including a controller and an interior antenna coupled to the controller and located at the selected antenna location…
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- G06K19/07327Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8933787B2 cover?
- An active RFID tag has an antenna inside RF-blocking enclosure having a port with a selected shortest dimension. An RFID reader located outside the enclosure at a reader position transmits a downlink RF signal through the port as a directional RF signal on a downlink carrier frequency corresponding to a downlink wavelength smaller than the selected shortest dimension. The port is selectively co…
- Who is the assignee on this patent?
- Hinman Mark P, Zogg Edward, Sharma Abhishek, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G06K19/07327. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).