TY - JOUR
T1 - Investigation of Circularly Polarized Microstrip Antenna with Tri-Band Polarization Conversion Metamaterials
AU - Hui, Weihua
AU - Guo, Yao
AU - Xie, Kunlun
AU - Zhao, Xiaopeng
N1 - Publisher Copyright:
© 2002-2011 IEEE.
PY - 2023/12/1
Y1 - 2023/12/1
N2 - A method for circularly polarized (CP) microstrip antenna based on reflective polarization conversion metamaterials (PCM) is proposed in this letter. On the one hand, the proposed metamaterials can convert the linearly polarized (LP) waves to the cross direction in tri-band 4.58-4.73, 5.68-6.12, and 6.3-6.77 GHz. On the other hand, the LP patches with center frequencies of 4.75, 5.8, and 6.6 GHz are placed in the Fabry-Perot (FP) cavity formed by PCM, which can realize the linear-To-circular polarization conversion of the three conventional microstrip antennas. The theoretical analysis reveals that the function of polarization conversion results from dipole oscillation on the connected asymmetrically split ring of the metamaterials. Simulated and measured results show that the axial ratio bandwidth of the three PCM-loaded microstrip antennas is greater than 200 MHz. And due to the FP cavity, the gain of the PCM-loaded antennas is also improved. This design for the CP antenna satisfies the reciprocity principle and is applicable to more scenarios.
AB - A method for circularly polarized (CP) microstrip antenna based on reflective polarization conversion metamaterials (PCM) is proposed in this letter. On the one hand, the proposed metamaterials can convert the linearly polarized (LP) waves to the cross direction in tri-band 4.58-4.73, 5.68-6.12, and 6.3-6.77 GHz. On the other hand, the LP patches with center frequencies of 4.75, 5.8, and 6.6 GHz are placed in the Fabry-Perot (FP) cavity formed by PCM, which can realize the linear-To-circular polarization conversion of the three conventional microstrip antennas. The theoretical analysis reveals that the function of polarization conversion results from dipole oscillation on the connected asymmetrically split ring of the metamaterials. Simulated and measured results show that the axial ratio bandwidth of the three PCM-loaded microstrip antennas is greater than 200 MHz. And due to the FP cavity, the gain of the PCM-loaded antennas is also improved. This design for the CP antenna satisfies the reciprocity principle and is applicable to more scenarios.
KW - Circularly polarized (CP)
KW - microstrip antenna
KW - polarization conversion metamaterials
KW - tri-band
UR - https://www.scopus.com/pages/publications/85166745173
U2 - 10.1109/LAWP.2023.3300298
DO - 10.1109/LAWP.2023.3300298
M3 - 文章
AN - SCOPUS:85166745173
SN - 1536-1225
VL - 22
SP - 2831
EP - 2835
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 12
ER -