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    • 3. 发明公开
    • RFID UHF STRIPLINE COUPLER
    • RFID UHF STRIPLINE耦合器
    • EP1991944A1
    • 2008-11-19
    • EP07758251.8
    • 2007-03-09
    • ZIH Corporation
    • SCHWAN, Martin Andreas, KarlTSIRLINE, Boris, Y.TORCHALSKI, Karl
    • G06K7/00H01P3/08
    • G06F3/1296G06K7/01G06K7/10316G06K7/10346H01P3/085
    • A stripline coupler for a RFID system is provided. The coupler is configured to communicate with a targeted transponder from among a group of multiple adjacent transponders. The coupler may include a conductive strip, a terminating load, a dielectric material, a first ground plane, and a second ground plane. The conductive strip extends between the first and second ground planes and the dielectric material from an input end connected to a transceiver to a loaded end connected to the terminating load. The conductive strip may be configured to propagate electromagnetic fields concentrated in a near field region of the conductive strip in a direction generally perpendicular to the conductive strip to couple with a targeted transponder. The coupler may include an enclosure for directing the electromagnetic fields. The conductive strip may have a tapered or non-linear profile such as a modified bow-tie profile, an exponential profile, or a Klopfenstein profile.
    • 提供用于RFID系统的带状线耦合器。 耦合器被配置为与一组多个相邻应答器中的目标应答器进行通信。 该耦合器可以包括导电条,端接负载,电介质材料,第一接地平面和第二接地平面。 导电条在第一和第二接地平面之间以及介电材料从连接到收发器的输入端延伸到连接到端接负载的加载端。 导电条可以被配置为沿大致垂直于导电条的方向传播集中在导电条的近场区域中的电磁场以与目标应答器耦合。 该耦合器可以包括用于引导电磁场的外壳。 导电条可以具有渐缩或非线性轮廓,诸如修改的蝴蝶结形状,指数轮廓或Klopfenstein轮廓。