BR9816070A - Multiple frame antenna, and electronic article surveillance system. - Google Patents
Multiple frame antenna, and electronic article surveillance system.Info
- Publication number
- BR9816070A BR9816070A BR9816070-2A BR9816070A BR9816070A BR 9816070 A BR9816070 A BR 9816070A BR 9816070 A BR9816070 A BR 9816070A BR 9816070 A BR9816070 A BR 9816070A
- Authority
- BR
- Brazil
- Prior art keywords
- antenna
- frame
- surveillance system
- electronic article
- multiple frame
- Prior art date
Links
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
"ANTENA DE MúLTIPLOS QUADROS, E, SISTEMA DE VIGILâNCIA ELETRôNICA DE ARTIGOS". é provida uma antena de múltiplos quadros (70) que pode ser ligada ou a um circuito transmissor, a um circuito receptor ou a um circuito transmissor/receptor (80). Quando energizada por um circuito transmissor (60), a antena (70) gera campos magnéticos de radiofrequência numa área ou zona próxima da antena, porém que são substancialmente cancelados a uma distância de aproximadamente um comprimento de onda e mais a partir da antena (70), deste modo definindo uma zona de vigilância próxima da antena (70). A antena de quadro (70) inclui um primeiro quadro, superior, (36) e um segundo quadro, inferior, (38). Os quadros superior (36) e inferior (36) estão contidos em planos paralelos, espaçados e separados e, de preferência, estão dispostos a um ângulo fixo em relação à zona de vigilância."MULTIPLE TABLE ANTENNA, AND, ELECTRONIC SURVEILLANCE SYSTEM OF ITEMS". a multi-frame antenna (70) is provided which can be connected either to a transmitter circuit, to a receiver circuit or to a transmitter / receiver circuit (80). When energized by a transmitting circuit (60), the antenna (70) generates radio frequency magnetic fields in an area or area close to the antenna, but which are substantially canceled at a distance of approximately one wavelength and more from the antenna (70 ), thereby defining a surveillance zone close to the antenna (70). The frame antenna (70) includes a first, upper frame (36) and a second, lower frame (38). The upper (36) and lower (36) frames are contained in parallel, spaced and separated planes and, preferably, are arranged at a fixed angle in relation to the surveillance zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9816070-2A BR9816070A (en) | 1998-11-12 | 1998-11-12 | Multiple frame antenna, and electronic article surveillance system. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9816070-2A BR9816070A (en) | 1998-11-12 | 1998-11-12 | Multiple frame antenna, and electronic article surveillance system. |
| PCT/US1998/024182 WO2000030214A1 (en) | 1997-05-28 | 1998-11-12 | Multiple loop antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9816070A true BR9816070A (en) | 2001-08-07 |
Family
ID=25665315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9816070-2A BR9816070A (en) | 1998-11-12 | 1998-11-12 | Multiple frame antenna, and electronic article surveillance system. |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR9816070A (en) |
-
1998
- 1998-11-12 BR BR9816070-2A patent/BR9816070A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application fees: dismissal - article 86 of industrial property law |
Free format text: REFERENTE A 7 E 8A ANUIDADES |
|
| B08K | Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87) |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1910 DE 14/08/2007. |