Development of a Low-Profile Circularly Polarized Cavity-Backed Antenna Using HMSIW Technique
Development of a Low-Profile Circularly Polarized Cavity-Backed Antenna Using HMSIW Technique
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DOI：
10.1109/tap.2012.2227104
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发表时间：
2013-03-01
影响因子：
5.7
通讯作者：
Neshati, Mohammad H.
中科院分区：
文献类型：
--
作者：
Razavi, Seyed Ali;Neshati, Mohammad H.
采用半模基片集成波导（HMSIW）技术设计了两种单馈低剖面背腔平面缝隙圆极化天线。其中一个结构提供右手CP（RHCP），而另一个提供左手CP（LHCP）。两个天线均采用单层低成本印刷电路板（PCB），从而提供低成本、重量轻并且还易于与平面电路集成。利用插入微带线激励两个正交的四分之一波长贴片模，使其具有所需的相位差，产生CP波。新提出的天线的成功设计和制造。测量结果与HFSS数值模拟结果吻合较好。结果表明，这两种天线的优点，传统的背腔天线，包括高增益和高的前后比（FTBR）。
In this paper, two single fed low-profile cavity-backed planar slot antennas for circular polarization (CP) applications are first introduced by half mode substrate integrated waveguide (HMSIW) technique. One of the structures presents right handed CP (RHCP), while the other one offers left handed CP (LHCP). A single layer of low cost printed circuit board (PCB) is employed for both antennas providing low-cost, lightweight, and also easy integration with planar circuits. An inset microstrip line is used to excite two orthogonal quarter-wave length patch modes with required phase difference for generating CP wave. The new proposed antennas are successfully designed and fabricated. Measured results are in good agreement with those obtained by numerical investigation using HFSS. Results exhibit that both antennas present the advantages of conventional cavity backed antennas including high gain and high front to back ratio (FTBR).