HUANG K C, BIAN L A, LIU Y, et al. Frequency reconfigurable multi-mode microstrip quasi-Yagi antenna[J]. Chinese Journal of Ship Research, 2022, 17(4): 126–133. doi: 10.19693/j.issn.1673-3185.02789
Citation: HUANG K C, BIAN L A, LIU Y, et al. Frequency reconfigurable multi-mode microstrip quasi-Yagi antenna[J]. Chinese Journal of Ship Research, 2022, 17(4): 126–133. doi: 10.19693/j.issn.1673-3185.02789
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Frequency reconfigurable multi-mode microstrip quasi-Yagi antenna

    Abstract
  •   Objectives  With increasing congestion and interference facing shipborne wireless communication equipment, it is urgent for antennae functions to be reconstructed. This study proposes a microstrip Quasi-Yagi antenna with a continuously reconfigurable cross-band frequency function.
      Methods  First, PIN diodes are loaded on the quasi-Yagi antenna, and multi-band multi-mode switching is realized by controlling turning the diodes on/off. Second, by attaching snowflake split-ring resonator (SRR), the antenna gains two stable frequency resonance points and a stable radiation azimuth.
      Results  According to the simulation and measurement results, the antenna realizes frequency reconfiguration in the C-band (5.77–7.10 GHz and 7.40–7.56 GHz) and X-band (8.33–8.64 GHz and 8.76–9.27 GHz). Its radiation pattern can stably point in the direction of capacitive loading conduction, with gain above 5.7 dBi at each frequency and an average 3 dB beamwidth value of 102°.
      Conclusions  By loading PIN diodes on the antenna and attaching a snowflake SRR, cross-band frequency becomes frequency reconfigurable, and beam deflection with low error is achieved, thereby improving the spectral utilization of ship systems and avoiding coupling interference between multiple antennae.
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