Abstract
We present a 4 × 4 slot-coupled Vivaldi antenna (SCVA) array unit cell, which offers wide bandwidth and high gain (~23 dBi) at the millimeter wave (mmW) frequencies of 28 GHz and 38 GHz. A single SCVA element is first presented, which has a bandwidth of 25–40 GHz with an average gain of ~13 dBi at the frequencies of interest. This antenna element is then used to design a 1 × 4 linear SCVA array matched to a 50 Ω impedance via a modified Wilkinson power divider (WPD). Next, the 1 × 4 linear array is used to construct a 4 × 4 antenna array unit cell. The proposed 4 × 4 antenna array unit cell is fabricated, and the characteristics of its elements (i.e., the single SCVA, 1 × 4 linear array, and WPD) are thoroughly investigated. Further, the 4 × 4 array is tested for signal reception of various digital modulation formats at lab environment using high-speed digital signal oscilloscope. In particular, a 2.5 Gbps data rate is successfully transmitted achieving receiver sensitivity of −50 dBm at 2 × 10−3 bit error rate (BER) for 32 quadrature amplitude modulation (QAM) with a system baud rate of 500 MHz. The wide bandwidth and high gain along with the excellent performance of the proposed 4 × 4 antenna array unit cell makes it an excellent candidate for future 5G wireless communication applications.
Highlights
Rapid development of wireless networking techniques in the last decade have introduced a bundle of wireless services that are being utilized by various smart devices
The millimeter wave (mmW) band has attracted a lot of attention over the last years from both the scientific research community and industry alike, as it is acknowledged for being a key technology in the development and implementation of the fifth generation (5G) mobile communication systems [2,3,4]
We propose an array design for 5G communications by using Vivaldi antenna, which can cope with both requirements effectively
Summary
Rapid development of wireless networking techniques in the last decade have introduced a bundle of wireless services that are being utilized by various smart devices. The proposed antennas are designed using the low-loss tangent material RO4003 substrate and enjoys a gain > 20 dBi and a wide bandwidth from 25 to 40 GHz covering frequencies of interest at 28 GHz and 38 GHz. The performance of the proposed array is further evaluated with respect to reception of various wirelessly transmitted standard digital modulation schemes. It can be observed from the figure that the antenna radiates well below −10 dB over wide impedance bandwidths in the range from 25 to 40 GHz. 3.2.
Sign-in/Register to view highlights & summary 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.
