Abstract
This paper proposes a novel design of a dual-broadband dual-polarized antenna for mobile communication base stations. The proposed antenna is Fylfot-shaped and covers 0.7–0.96 and 1.7–2.7 GHz simultaneously (with S11 ≤ −10 dB), which are the two common frequency bands for mobile communication systems. Three resonant frequencies are produced in the proposed design where two of them are independently controlled to achieve the dual-broadband performance. A prototype of the proposed antenna has been developed and tested. The results demonstrate that the antenna has high isolation between its ports, high polarization purity, and stable radiation patterns across both the frequency bands. A new linear array is proposed and implemented. Unlike reported dual-band base station antenna arrays, the proposed array uses a novel technique of two MIMO overlapped subarrays with shared radiating antenna elements. The overlapped subarrays have excellent frequency diversity performance with low envelope correlation coefficients. The array has been found to have the same performance as a standard conventional base station antenna but with 25% less number of antenna elements, which leads to a smaller size and lower cost. The simple antenna structure and the novel smart MIMO overlapped antenna subarrays technique give the design the privilege to be an ideal candidate for a low-cost directive base station antenna.
Highlights
The evolution of smartphone technology has resulted in the development of base station antennas for mobile communication systems from single-polarized to dual-polarized and from single band to dual or multi-bands [1]
The most common frequency bands used for mobile communication systems are the lower band (LB) from about 0.7 to 0.96 GHz and the upper band (UB) from 1.7 to 2.7 GHz
Base station antenna designers face many challenges such as to obtain a stable radiation pattern within the desired frequency bands, high polarization purity (PP) and good impedance matching at the same time [3]
Summary
The evolution of smartphone technology has resulted in the development of base station antennas for mobile communication systems from single-polarized to dual-polarized and from single band to dual or multi-bands [1]. Base station antenna designers face many challenges such as to obtain a stable radiation pattern within the desired frequency bands, high polarization purity (PP) and good impedance matching at the same time [3].
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.