A Compact Broadband Dual-Polarized Antenna for OTA Testing of Sub-6 GHz 5G New Radio
| Authors | P. Singh1, F.H. Ali2 |
| Affiliations |
1Department of Test and Measurement, Rohde & Schwarz., New Delhi, India 2School of Engineering and Informatics, University of Sussex., United Kingdom |
| Е-mail | spermvir2022@gmail.com |
| Issue | Volume 15, Year 2023, Number 6 |
| Dates | Received 05 September 2023; revised manuscript received 14 December 2023; published online 27 December 2023 |
| Citation | P. Singh, F.H. Ali, J. Nano- Electron. Phys. 15 No 6, 06004 (2023) |
| DOI | https://doi.org/10.21272/jnep.15(6).06004 |
| PACS Number(s) | 84.40 Ba |
| Keywords | Beamforming, Dual-polarization, Over-the-Air testing, Radiation pattern, Return loss, Vivaldi antenna. |
| Annotation |
The implementation of antenna arrays, beamforming, and millimeter-wave communication in a 5G network requires a novel approach to testing the radio performance of the devices. Over-the-air testing is a practical solution for measuring the radio performance of next-generation wireless systems. This paper presents the analysis and design of the dual-polarized Vivaldi antenna for over-the-air testing of a 5G base station for the frequency range spanning from 1.4 GHz to 6 GHz. The designed antenna consists of two elements arranged in an orthogonal fashion. The two dual-polarized Vivaldi antenna prototypes are modeled: one with an offset between the antenna elements and the other without an offset between the antenna elements. The wideband antenna is mainly characterized by an acceptable reflection coefficient (S11) over the desired operational bandwidth. The simulation results show S11 less than –10 dB across 1.4 to 6 GHz frequency range in both prototypes. The CST Studio Suite EM simulator is used to create and simulate the proposed antenna utilizing the Rogers RO4350B substrate, which has an overall size of 86 90 0.5 mm3. The proposed antenna will be used at the UE side inside the anechoic chamber to test 5G base station over the air in terms of throughput and mobility. The compact size and low cost are the key features of this antenna. Low cost is achieved by using cheap dielectric material. |
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