Abstract
In this paper, an umbrella-shaped patch antenna for future millimeter-wave applications for the 5G frequency band is presented. The proposed antenna resonates at multiple frequency bands, i.e., 28 GHz, 38 GHz, and 55 GHz (V-band) that have been globally allocated for 5G communications systems. The proposed antenna is designed using Rogers RT/duroid 5870, with a relative permittivity, loss tangent and thickness of 2.33 mm, 0.0012 mm and 0.79 mm, respectively. The antenna has an overall size of 8 mm × 8 mm which correspond to 0.7 λ × 0.7 λ, where λ is free space wavelength at the lowest resonance. Moreover, the wide bandwidth, high gain and tri band operational mode is achieved by introducing two stubs to the initial design. The antenna prototype was fabricated and validated experimentally. The comparison of the simulated and measured results demonstrates a good correlation. Additionally, the comparative analysis with state of the art work demonstrates that the proposed antenna offers compact size, simple geometrical configuration, wide bandwidth, high gain, and radiation efficiency which makes the proposed antenna a potential candidate for compact smart 5G devices.
Highlights
The future generation communication systems demand the high data rate, low cost, efficient, and less complex approaches to handle the exponential increase in the number of users [1]
The signal generated by voltage controlled oscillator (VCO) can be effected by transmission losses and open air
High gain power amplifiers were used in the measurement setup as they are able to boost the generated signal and efficient transmission of the radio signal was obtained from the transmitter to the receiver
Summary
The future generation communication systems demand the high data rate, low cost, efficient, and less complex approaches to handle the exponential increase in the number of users [1]. The proposed structure is a stacked configuration with microstrip feed on one layer and proximity coupled parasitic patches on the second layer This antenna resonates at 45.3 GHz, 57 GHz, and 66 GHz frequency ranges with peak gain of 5.66 dBi. Likewise, a triple band antenna with comparatively simple structure is presented in [14] for mm-wave communication systems. This antenna covers the 23−28 GHz mm-wave band with peak gain value of 5.85 dB at 26 GHz, the overall size of the proposed structure is comparatively large From this discussion it is clear that designing a low profile [20] and compact antenna with wide bandwidth, high gain and multiband characteristics at mm-wave frequencies is a real challenge for researchers.
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