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Ka-band Frequency Scanning Antenna with Wide-Angle Span

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Abstract

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.

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Authors and Affiliations

  1. Sharif University of Technology, Tehran, Iran

    Mohammadreza Ranjbar Naeini, Mohammad Fakharzadeh & Forouhar Farzaneh

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  1. Mohammadreza Ranjbar Naeini
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  2. Mohammad Fakharzadeh
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  3. Forouhar Farzaneh
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Correspondence to Mohammad Fakharzadeh.

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Ranjbar Naeini, M., Fakharzadeh, M. & Farzaneh, F. Ka-band Frequency Scanning Antenna with Wide-Angle Span. J Infrared Milli Terahz Waves 40, 231–246 (2019). https://doi.org/10.1007/s10762-018-0565-4

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  • DOI: https://doi.org/10.1007/s10762-018-0565-4

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