Abstract
In this paper a compact microstrip patch antenna designed for the unlicensed 60 GHz millimeter-wave band applications is presented and discussed in details. The proposed antenna consists of a rectangular radiating patch with an embedded U-shape slot inside, and excited by the coaxial probe feeding technique. A wide range of parametric studies has been performed on the patch size, feeding positions and U-slot dimensions and the antenna is optimized for the best possible results. The proposed antenna configuration achieved a wide bandwidth of 15.4 GHz (25.69 %) covering the frequency range from 52.20 to 67.70 GHz. The lowest return loss of the antenna is –41.2 dB and the maximum gain obtained is 9.52 dB at the 60 GHz resonance frequency. Considering the size, bandwidth, and gain, this microstrip antenna can be a suitable candidate for the 60 GHz wireless applications for short range high speed communications. DOI: http://dx.doi.org/10.5755/j01.eee.19.9.5651
Highlights
In the recent years, the rapid development and changing of wireless communications technology increased the interest to design a compact and wideband antenna, which is an important part of any wireless system [1]–[5]
In 2001, Federal Communications Commission (FCC) released the unlicensed millimeter-wave band around the 60 GHz frequency [10], [11]. This band is of immense interest due to the availability of universal unlicensed spectrum around 60 GHz for short-range communication systems such as indoor and underground communication and high speed wireless applications [12] like Gigabit-Ethernet bridges, Intelligent Transport Systems (ITS) and so on [13]
The study of the antenna characteristics starts with a conventional rectangular patch which is gradually optimized for better performances at 60 GHz
Summary
The proposed antenna consists of a rectangular radiating patch with an embedded U-shape slot inside, and excited by the coaxial probe feeding technique. A wide range of parametric studies has been performed on the patch size, feeding positions and U-slot dimensions and the antenna is optimized for the best possible results. The proposed antenna configuration achieved a wide bandwidth of 15.4 GHz (25.69 %) covering the frequency range from 52.20 to 67.70 GHz. The lowest return loss of the antenna is –41.2 dB and the maximum gain obtained is 9.52 dB at the 60 GHz resonance frequency. Considering the size, bandwidth, and gain, this microstrip antenna can be a suitable candidate for the 60 GHz wireless applications for short range high speed communications
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