Abstract
Lower efficiencies of power amplifiers and increased path losses at higher frequencies are two reasons why utilizing millimeter-wave frequencies for future wireless communications is challenging. In this article, a high-gain multilens-horn antenna system is presented. The antenna system provides highly effective isotropic radiated power by using only a few high-gain antenna elements, where each element only needs a low transmit power of 26 dBm to reach users at far distances. Moreover, due to channel reciprocity, both down- and uplink benefit from an increased antenna gain. It is shown that a reasonable number of high-gain antennas can provide coverage in a 60° sector with an inter-site distance of 300 m. Based on radio-planning simulations, three horn shapes are identified to provide sufficient coverage. The final optimized dual-polarized multilens-horn design is fabricated and experimentally verified. With a low transmit power at the base station (BS) of 26 dBm, a signal strength of at least −65 dBm is achieved in 98.9% of the sector at 28 GHz under non-line-of-sight conditions for the vertical polarization. For the horizontal polarization, an area of 96.2% is covered.
Highlights
T HE intention of exploiting higher frequencies for mobile communications is driven by the steadily growing demand for higher data rates and the rising number of mobile communications devices
To reach users at far distances, a high effective isotropic radiated power (EIRP) is needed, which is the transmit power supplied to the antenna, PTX, times the antenna gain, G
It is shown that the MLH-antenna system partitions with 16 antenna elements a 60◦ sector in a multi-site scenario with an Inter-site distance (ISD) of 300 m such that it provides a received power of -65 dBm in 98.9% and 96.2% of the area at 28 GHz
Summary
T HE intention of exploiting higher frequencies for mobile communications is driven by the steadily growing demand for higher data rates and the rising number of mobile communications devices. This work’s novel contribution is the investigation of the extension of the currently used cell-sectoring in mobile communications by using highly-directional, fixedbeam antennas to utilize higher frequencies while reducing the required transmit power. This beam overlap can be beneficial, as shown in the performance study [10], where we have put the developed antenna system in a multi-user scenario to the test. The study’s outcome shows that the high-gain antenna elements used for partitioning the area can achieve good performances in SISO and MIMO mode, and the beam overlaps are rather small, we have observed a benefit of using digital beamforming for an improved user separation.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
