Journal of Electronic Science and Technology, Volume. 22, Issue 3, 100275(2024)

A 27 GHz, simple 2-bit 1×8 phased array

Jun-Xian Liu... Yun-Ying Man, Hao Yang and Peng Yang* |Show fewer author(s)
Author Affiliations
  • School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China
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    Figures & Tables(11)
    Geometry of the proposed 2-bit element: (a) 3D view, (b) top view, and (c) bottom view. (h1 = 0.508 mm, h2 = 0.1 mm, h3 = 0.203 mm, d = 5.60 mm, l1 = 1.82 mm, l2 = 0.63 mm, l3 = 0.41 mm, w1 = 0.60 mm, w2 = 0.59 mm, l4 = 1.60 mm, l5 = 1.00 mm, l6 = 0.90 mm, w3 = 0.43 mm, w4 = 0.50 mm, w5 = 0.38 mm, w6 = 0.43 mm, and w7 = 0.35 mm)
    Equivalent circuit of p-i-n diode.
    When the antenna unit operates in different mode states, the surface current distributions of the top radiation patch and the bottom phase shifter: (a) state 1, (b) state 2, (c) state 3, and (d) state 4.
    Simulated results under different antenna modes: (a) reflection coefficients and ARs, (b) far-field phases, (c) gain pattern at 27 GHz, φ = 0° plane, and (d) gain pattern at 27 GHz, φ = 90° plane, where CS stands for complete structure, WBPS represents without bottom phase shifter, and WBPSTP represents without bottom phase shifter & top p-i-n diodes.
    1×8 array exploded view.
    Fabricated array sample: (a) top view, (b) bottom view, and (c) experimental configuration in the anechoic chamber.
    Measured results of the broadside beams at φ = 90° plane: (a) |S11 | and (b) gain and directivity at 0°.
    Measured gain patterns of scanning beams at 27 GHz, φ = 90° plane.
    • Table 1. Comparison between other relevant researches.

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      Table 1. Comparison between other relevant researches.

      ReferenceFrequency(GHz)Element size(λ0)Array sizeNumber of diodes per elementN-bitScanning rangeComplete prototype demonstration
      1 Bold fonts indicate the relevant data for the proposed method.
      [7]1.50.52×442±28°
      [8]3.650.51×842±49°
      [9]17.30.469×842±50°
      [10]280.561×883±50°×
      [12]120.522×1664±45°
      Prop.270.51×842±50°1
    • Table 2. Antenna status defined by different codes of p-i-n diodes.

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      Table 2. Antenna status defined by different codes of p-i-n diodes.

      Antenna modePIN1–PIN4Relative phase
      State 11000
      State 2011190°
      State 30100180°
      State 41011270°
    • Table 3. Performance indexes of measured beams.

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      Table 3. Performance indexes of measured beams.

      Scan angleGain (dBi)SLL (dB)AR (dB)
      10.23–11.392.05
      10°9.08–8.541.27
      20°8.86–6.532.07
      30°8.85–5.952.80
      40°7.65–5.300.39
      50°6.27–4.293.73
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    Jun-Xian Liu, Yun-Ying Man, Hao Yang, Peng Yang. A 27 GHz, simple 2-bit 1×8 phased array[J]. Journal of Electronic Science and Technology, 2024, 22(3): 100275

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    Paper Information

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    Received: Jun. 25, 2024

    Accepted: Aug. 6, 2024

    Published Online: Oct. 11, 2024

    The Author Email: Yang Peng (yangpeng@uestc.edu.cn)

    DOI:10.1016/j.jnlest.2024.100275

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