TY - JOUR
T1 - Ultrathin Multi-mode Fabry-Perot-Cavity With Wide Phase Resonance Bandwidth Enabled By Janus Partially Reflective Surface
AU - Wang, Qiming
AU - Sihvola, Ari
AU - Qi, Jiaran
N1 - Publisher Copyright:
IEEE
PY - 2023/10/1
Y1 - 2023/10/1
N2 - 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.
AB - 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.
KW - Antenna feeds
KW - Antennas
KW - artificial magnetic conductor
KW - Bandwidth
KW - Broadband antennas
KW - broadband multi-mode FPCAs
KW - Fabry Perot cavity antenna
KW - partially reflective surface
KW - Reflection
KW - Reflector antennas
KW - Transmitting antennas
KW - ultrathin resonance cavity
UR - https://www.scopus.com/pages/publications/85163484137
U2 - 10.1109/LAWP.2023.3289622
DO - 10.1109/LAWP.2023.3289622
M3 - Article
AN - SCOPUS:85163484137
SN - 1536-1225
VL - 22
SP - 2412
EP - 2416
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 10
ER -