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Substrate integrated low-profile dual-band magneto-electric dipole antenna

Author:
Shuai, Chen-Yang  Wang, Guang-Ming  


Journal:
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING


Issue Date:
2018


Abstract(summary):

In this article, a novel substrate integrated low-profile dual-band magneto-electric (ME) dipole antenna is proposed. The entire antenna is constructed by four-layer printed circuit boards (PCBs). Consequently, the height of the proposed antenna is decreased from 0.25(0) to 0.11(0) ((0) is the free-space wavelength at 5.5GHz). By introducing rectangular patches with different sizes as electric dipoles, dual operating bands are achieved. Meanwhile, for the purpose of improving the impedance matching at the lower frequency band, a pair of complementary split-ring resonators (CSRRs) is etched on the larger rectangular patches. Moreover, the short walls composed of plated through holes operate as a magnetic dipole. The antenna is fed by an equivalent wideband microstrip-to-parallel stripline balun. The results show that the antenna obtains dual bandwidths of 4.31-4.71GHz (8.8%) and 5.07-5.89GHz (14.9%) with VSWR <2, which can be applied for C-band and 5G WiFi. Over the dual operating bands, stable gain and unidirectional radiation patterns with low polarization and low back lobe are also obtained.


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