A Microwave/Millimeter-Wave Shared-Aperture Antenna Based on Slow-Wave Parallel-Plate Waveguide

作者：Ma, Chao Jun; Pan, Yong Mei; Meng, Xiang Yu; Zheng, Shao Yong^*

来源：IEEE Transactions on Antennas and Propagation, 2023, 71(4): 3022-3032.

DOI：10.1109/TAP.2023.3242429

• Antenna
• beam steering
• dielectric resonator antenna (DRA)
• series-fed antenna
• shared-aperture
• slow-wave waveguide

Since the coexistence of microwave (MW) and millimeter-wave (MMW) technologies has become the inexorable trend of emerging wireless communication systems, the corresponding antennas are required to support two frequency bands simultaneously. However, the existing MW/MMW sharedaperture antennas are facing challenges in dealing with the interference between two bands and implementing beam steering at both bands. To address these issues, a windowed slow-wave parallel-plate waveguide (WSW-PPW) is proposed as the sharing platform, on which MW and MMW antenna elements can be flexibly arranged. WSW-PPW is implemented by embedding electromagnetic bandgap (EBG) structures into a dual-layer printed PPW. At the MW band, WSW-PPW exhibits a transmission feature for feeding and also integrating MW antenna elements. At theMMWband, WSW-PPW rejects the propagation of electromagnetic waves and functions as artificial magnetic boundaries for dielectric resonator antennas, which are realized by removing subarrays of EBG structures. For demonstration, an MW/MMW shared-aperture antenna is implemented by integrating a 1 x 2 MW patch array and a 1 x 8 MMW array on this platform. Steerable beams had been independently achieved at both bands. The antenna is fabricated and experimentally verified. The measured results show a reasonable agreement with simulations.

• 单位
  中山大学