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Ka-band frequency scanning antenna with wide-angle span

Ranjbar Naeini, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1007/s10762-018-0565-4
  3. Publisher: Springer New York LLC , 2019
  4. Abstract:
  5. This paper describes the design procedure and measurement results of a single-layer low-cost, and wideband frequency scanning antenna, which exhibits a nearly symmetrical beam-steering around broadside direction. The measured antenna bandwidth ranges from 27.5 to 40 GHz, which covers most of the Ka-band. In addition, the antenna main beam scans from − 52° to + 42° as the frequency sweeps from 27.5 to 36.5 GHz, showing 94° beam-steering range. At the center frequency of 32 GHz, the beam points to the broadside direction. The measured radiation patterns verify that the beam-pointing error is less than 2° over the scanning range. Furthermore, the measured gain for a 10-cell structure with 6-cm length, varies from 4 to 11 dBi from 27.5 to 36.5 GHz, which is in very good agreement with simulation. The proposed antenna is scalable for designing antennas at different center frequencies or with a desired gain or beamwidth, for different applications such as low-cost millimeter-wave imaging and 5G. © 2019, Springer Science+Business Media, LLC, part of Springer Nature
  6. Keywords:
  7. Antenna ; Frequency scanning ; Imaging ; Millimeter wave ; Wide beam ; Antennas ; Costs ; Directional patterns (antenna) ; Imaging techniques ; Microwave antennas ; Millimeter waves ; Antenna bandwidth ; Beam pointing errors ; Center frequency ; Design procedure ; Millimeter-wave imaging ; Wide band frequencies ; Scanning antennas
  8. Source: Journal of Infrared, Millimeter, and Terahertz Waves ; Volume 40, Issue 2 , 2019 , Pages 231-246 ; 18666892 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10762-018-0565-4