Low-Cost mmWave Metallic Waveguide Based on Multilayer Integrated Vertical-EBG Structure and its Application to Slot Array Antenna Design
| Autor: | Lingwen Kong, Sining An, Jianhong Chen, Zhongxia Simon He, Jinlin Liu, Cheng Jin, Binchao Zhang |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | IEEE Transactions on Antennas and Propagation. 70:2205-2213 |
| ISSN: | 1558-2221 0018-926X |
| DOI: | 10.1109/tap.2021.3111523 |
| Popis: | A novel methodology to create metallic waveguides with multilayer integrated vertical electromagnetic bandgap (EBG) structure is proposed in this paper, and the structure realizes low-cost millimeter-wave (mmWave) slot array antennas. A multilayer stack of easy-to-process thin metallic etching plates is introduced to design mmWave waveguide using compression-fit instead of diffusion bonding and welding assembly process. The electromagnetic (EM) wave leakage from the gaps between the metallic plates is suppressed using the vertical-EBG structure and anti-phasing feeding. The dispersion diagrams of the vertical-EBG unit cell are investigated to illustrate the suppression of leakage. Another leakage wave intercepting methodology is adopted by anti-phase feeding to prevent leakage wave from adjacent slot sub-arrays. Finally, two examples of 2×8 and 8×8 slot array antennas are presented to verify our design concept. The measured impedance bandwidths of the two antennas are 77.1-84.6 GHz (9.3%) and 78.6-84.9 GHz (7.7%), respectively. In addition, the 3-dB broadside gain bandwidths are 73.1 to 85.3 GHz (15.1%) and 76.8 to 84.4 GHz (9.4%), respectively. The results show aperture efficiencies up to 56.4%. |
| Databáze: | OpenAIRE |
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