期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2014
卷号：2014
DOI：10.1155/2014/527307
出版社：Hindawi Publishing Corporation
摘要：In an antenna for a UHF RFID reader of wireless sensor networks (WSN), receiver sensitivity in sensing multitags from remote distances is an important performance index. This study designed a dual structured Z-slot antenna with optimized receiver sensitivity to enhance the sensitivity to a circularly polarized antenna with an isotropic pattern for a UHF RFID. Through analysis of performance in the designed antenna, the following was verified: return loss was about −62.21 dB at 925.25 MHz, antenna gain was 7.36 dBi, and , isotropic gain deviation, was 1.3 dB. Impedance matching was about 50.069 at 925.25 MHz and VSWR was from 1.001 to 1.028. Through this research it was discovered that this can be applied to the design of all RFID readers of WSN. Based on the above results, it is suggested that a circularly polarized Z-slot antenna which can enhance receiver sensitivity over a wide range can be widely applied to UHF RFID readers of WSN.
