Ultrathin Multi-mode Fabry-Perot-Cavity With Wide Phase Resonance Bandwidth Enabled By Janus Partially Reflective Surface
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2023-10-01
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en
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5
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IEEE Antennas and Wireless Propagation Letters, Volume 22, issue 10, pp. 2412-2416
Abstract
Fabry-Perot-Cavity (FPC) of a less than λ/2 height often suffers from a narrow phase resonance bandwidth. This is mainly due to the violated cavity phase condition originating from the single intracavity resonance mode. By enriching the mode, the phase resonance relationship can be expanded and made easier to meet within a broader band. The enriched intracavity resonance mode is accomplished by an anisotropic Janus partially reflective surface which offers three types of reflection phase. By combining the resonance bandwidth of each mode, an FPC with a wide phase bandwidth is obtained. The ultrathin cavity is implemented by an isotropic artificial magnetic conductor. Finally, based on this FPC, a reflection-type FPC antenna adopting an external feed antenna is designed. The FPC antenna achieves a 3-dB gain bandwidth of 20.8% (5.47−6.74 GHz) with a peak gain of 14.0 dBi under a 0.3 mm (λ/180) cavity which reduces the profile of the reflection-type FPC antenna. The S11 performance of the antenna keeps less than −10 dB within 5.50−6.67 GHz.Description
Publisher Copyright: IEEE
Keywords
Antenna feeds, Antennas, artificial magnetic conductor, Bandwidth, Broadband antennas, broadband multi-mode FPCAs, Fabry Perot cavity antenna, partially reflective surface, Reflection, Reflector antennas, Transmitting antennas, ultrathin resonance cavity
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Citation
Wang, Q, Sihvola, A & Qi, J 2023, ' Ultrathin Multi-mode Fabry-Perot-Cavity With Wide Phase Resonance Bandwidth Enabled By Janus Partially Reflective Surface ', IEEE Antennas and Wireless Propagation Letters, vol. 22, no. 10, pp. 2412-2416 . https://doi.org/10.1109/LAWP.2023.3289622