An antenna having wide radiation pattern but narrow beam in operation based on monopulse system for security gate applications at UHF band
An antenna having wide radiation pattern but narrow beam in operation based on monopulse system for security gate applications at UHF band
复制标题
一种基于单脉冲系统的宽辐射方向图但窄波束天线，适用于 UHF 频段的安全门应用
DOI：
10.1109/rws.2017.7885966
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
F. Kuroki
中科院分区：
文献类型：
--
作者：
Katsuyoshi Aoki;Tomoki Sakogawa;F. Kuroki
While keeping antenna size, a technique to narrow down the radiation patterns of the antennas operationally was proposed because of false operation of security gate to prevent shoplifting. The main emphasis was placed on the analog signal processing using the monopulse antenna system. After identifying the detected arrival angle of RF-waves from RFID-Tags, the positions of the RFID-Tags can be recognized, and thus, the RFID-Tags can tell whether they were lifted or not. Two microstrip patch antennas, being placed for a distance of 16mm in a small sized security gate box, were connected with a 180 degree hybrid coupler, and the performance of the arrival angle detection was investigated theoretically and experimentally at 920MHz. The half power beam width was successfully performed to be less than 20 degrees operationally, and thus, no false operation was able to observe.
