Magnetically coupling near-field RFID antenna

Details Magnetically coupling near-field RFID antenna Magnetically coupling near-field RFID antenna

2011-08-16

2011-08-16

Phan, David G (Department: 2821)

Communications: radio wave antennas

Antennas

Including magnetic material

C343S741000, C343S787000, C343S866000

Reexamination Certificate

active

07999751

ABSTRACT:
An improved magnetically coupling near-field RFID antenna is embodied as a magnetic H-field coupler, and the near-field RFID antenna is embodied as a looped and/or frame-shaped antenna. The looped and/or frame-shaped antenna comprises a looped or frame-shaped strip conductor. The strip conductor is arranged set apart from a ground surface parallel thereto. A dielectric is interposed. The start and the end of the strip conductor end close to each other forms a gap or spacing. The start of the strip conductor is fed to ground. The end of the strip conductor is terminated by a terminating resistor. The terminating resistor is connected between the end of the strip conductor and a ground surface.

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Citation by Examiner in the corresponding German examination proceedings, 10 2009 019 546.7-35, 3 pages (Mar. 25, 2010).
Daniel M. Dobkin, Steven M. Weigand and Nathan Iye, “Segmented Magnetic Antennas for Near-field UHF RFID,” Microwave Journal and Horizon House Publications, vol. 50, No. 6 (Jun. 6, 2007).
Qing, Xianming, et al., “Characteristics of a Metal-Backed Loop Antenna and its Application to a High-Frequency RFID Smart Shelf,” IEEE Antennas and Propagation Magazine, vol. 51, No. 2 (Apr. 2009).
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