MX9601858A - Transmisor-receptor que divide la frecuencia de una señal activada. - Google Patents
Transmisor-receptor que divide la frecuencia de una señal activada.Info
- Publication number
- MX9601858A MX9601858A MX9601858A MX9601858A MX9601858A MX 9601858 A MX9601858 A MX 9601858A MX 9601858 A MX9601858 A MX 9601858A MX 9601858 A MX9601858 A MX 9601858A MX 9601858 A MX9601858 A MX 9601858A
- Authority
- MX
- Mexico
- Prior art keywords
- frequency
- resonant
- circuit
- series
- resonant circuit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2422—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using acoustic or microwave tags
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2431—Tag circuit details
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2428—Tag details
- G08B13/2434—Tag housing and attachment details
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2451—Specific applications combined with EAS
- G08B13/2462—Asset location systems combined with EAS
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Un divisor de frecuencia portátil sin baterías, tal como el usado en los sistemas de deteccion de la presencia, para la inspeccion de un artículo o empleado para determinar la localizacion de un artículo, incluye un circuito resonante en serie LC (L1-C1, L1-D1) conectado directamente a través de un circuito resonante paralelo LC (L2-D2, L2-C2). Un circuito es resonante en una primera frecuencia y el otro circuito es resonante en una segunda frecuencia que es un cociente dividido de una pluralidad de enteros de la primera frecuencia. En una clase de las modalidades, cualquiera o ambos circuitos resonantes en serie y paralelos incluyen un elemento de capacitancia variable (D1-D2), tal como un varactor, en el cual la capacitancia varía de acuerdo con el voltaje a través del elemento de capacitancia variable. La variacion de la capacitancia del elemento de capacitancia variable en respuesta a las variaciones de energía en la primera frecuencia, ocasiona que el circuito resonante de frecuencia inferior transmita la radiacion electromagnética en la segunda frecuencia. En otra clase de las modalidades, el circuito paralelo (L2-C2) es resonante en una primera frecuencia más grande y el circuito en serie (L1-C1) es resonante en la frecuencia dividida de la segunda frecuencia; el divisor de frecuencia incluye un dispositivo de interrupcion de tres terminales (Q1, Q2) que tienen una terminal de control, una terminal de referencia y una terminal controlada, el cual se conecta directamente a través ambos circuitos resonantes (L1-C1, L2-C2) y entre la inductancia (L1) y la capacitancia (C1) del circuito resonante en serie (L1-C1) y, el cual se enciende y apaga en respuesta a las variaciones de energía en el circuito resonante paralelo (L2-C2) resultante del circuito resonante paralelo (L2-C2) que recibe la radiacion electromagnética en la primera frecuencia para ocasionar que el circuito resonante en serie (L1-C1) transmita la radiacion electromagnética en la segunda frecuencia.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/443,477 US5517179A (en) | 1995-05-18 | 1995-05-18 | Signal-powered frequency-dividing transponder |
| US08443477 | 1995-05-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9601858A true MX9601858A (es) | 1998-06-30 |
| MXPA96001858A MXPA96001858A (es) | 1998-10-30 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| ES2106705T1 (es) | 1997-11-16 |
| BR9602265A (pt) | 1998-04-07 |
| DK0743625T3 (da) | 1999-06-23 |
| EP0743625A2 (en) | 1996-11-20 |
| CA2172758C (en) | 2000-01-25 |
| HK1012108A1 (en) | 1999-07-23 |
| CA2172758A1 (en) | 1996-11-19 |
| ES2106705T3 (es) | 1998-12-16 |
| CN1095997C (zh) | 2002-12-11 |
| US5517179A (en) | 1996-05-14 |
| DE743625T1 (de) | 1998-01-29 |
| JPH09135192A (ja) | 1997-05-20 |
| NO313258B1 (no) | 2002-09-02 |
| EP0743625A3 (en) | 1997-03-19 |
| EP0743625B1 (en) | 1998-10-14 |
| NO961370L (no) | 1996-11-19 |
| JP3866326B2 (ja) | 2007-01-10 |
| AU698802B2 (en) | 1998-11-05 |
| DE69600775D1 (de) | 1998-11-19 |
| DE69600775T2 (de) | 1999-06-10 |
| NO961370D0 (no) | 1996-04-03 |
| CN1136171A (zh) | 1996-11-20 |
| AU5215396A (en) | 1996-11-28 |
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