公开(公告)号：WO2009076367A1

公开(公告)日：2009-06-18

申请号：PCT/US2008/086092

申请日：2008-12-09

Applicant: CHECKPOINT SYSTEMS, INC. ,  STRAUSER, Seth ,  IACONO, Charles ,  MAZOKI, Gary ,  PICOLLI, Tony ,  IMAICHI, Hideki

Inventor： STRAUSER, Seth ,  IACONO, Charles ,  MAZOKI, Gary ,  PICOLLI, Tony ,  IMAICHI, Hideki

IPC: G08B13/24

CPC classification number: G08B13/2437 ,  G08B13/242 ,  G08B13/2445 ,  H05K1/0293 ,  H05K3/4084 ,  H05K2201/091 ,  H05K2201/2009 ,  H05K2203/105 ,  H05K2203/173

Abstract: A resonant circuit for use with a radio-wave detection system for the prevention of shoplifting or the like, which is formed on a flexible substrate and has a coil and capacitor circuit whereby the capacitor has an indented area in the dielectric of the capacitor to promote disablement of the circuit when exposed to a strong electromagnetic field. Upon exposure to a strong electromagnetic field, an electrical short forms across the dielectric of capacitor in the indented area. Because the short is fragile and can be opened by flexure of the circuit, an island of reinforcing material is formed in the indented area, such that when the substrate is flexed, the indented area remains rigid to protect the short. The indented area can be further stress-relieved by introducing a gap in the conductors forming the capacitor plates.

Abstract translation: 一种用于防止商店盗窃等的无线电波检测系统的谐振电路，其形成在柔性基板上并且具有线圈和电容器电路，由此电容器在电容器的电介质中具有缩进区域以促进 暴露于强电磁场时电路的禁用。 在暴露于强电磁场时，在缩进区域中的电容器的电介质上形成电短路。 由于短路是易碎的并且可以通过电路的弯曲而打开，所以在凹陷区域中形成增强材料岛，使得当基板弯曲时，凹入区域保持刚性以保护短路。 通过在形成电容器板的导体中引入间隙，可以进一步减压凹陷区域。