TY - GEN
T1 - Reconfigurable Electrically Small Huygens Dipole Antenna with Full Space Radiation Coverage
AU - Lin, Wei
AU - Ziolkowski, Richard W.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022/7
Y1 - 2022/7
N2 - A reconfigurable, electrically small Huygens dipole antenna (HDA) with full space (quasi-isotropic) radiation coverage is reported. One unique feature of the design is its uniform polarization across the entire space. The HDA consists of two metamaterial-inspired electrically small radiating elements: an Egyptian axe dipole (EAD) and a reconfigurable capacitively loaded loop (CLL), and a small driven dipole. The width of the top strip of the CLL is reconfigured slightly by controlling the on/off states of two PIN diodes located between a thin strip and the CLL. Because the coupling effect between the EAD and CLL is dependent on the width of the top strip of the CLL, the phases of the currents on the EAD can be changed by 180° by varying it. As a result of the Huygens radiation physics, such a phase change alters the radiation pattern between the broadside forward-and back-directed modes. Because of the extremely broad beamwidth of the ensuing Huygens patterns, quasi-isotropic radiation coverage is realized. Furthermore, the length of the short-driven dipole is also reconfigured by one PIN diode to maintain consistent impedance matching at 915 MHz in the ISM band for both modes. It is an ideal candidate for indoor wireless power transfer (WPT) enabled IoT applications.
AB - A reconfigurable, electrically small Huygens dipole antenna (HDA) with full space (quasi-isotropic) radiation coverage is reported. One unique feature of the design is its uniform polarization across the entire space. The HDA consists of two metamaterial-inspired electrically small radiating elements: an Egyptian axe dipole (EAD) and a reconfigurable capacitively loaded loop (CLL), and a small driven dipole. The width of the top strip of the CLL is reconfigured slightly by controlling the on/off states of two PIN diodes located between a thin strip and the CLL. Because the coupling effect between the EAD and CLL is dependent on the width of the top strip of the CLL, the phases of the currents on the EAD can be changed by 180° by varying it. As a result of the Huygens radiation physics, such a phase change alters the radiation pattern between the broadside forward-and back-directed modes. Because of the extremely broad beamwidth of the ensuing Huygens patterns, quasi-isotropic radiation coverage is realized. Furthermore, the length of the short-driven dipole is also reconfigured by one PIN diode to maintain consistent impedance matching at 915 MHz in the ISM band for both modes. It is an ideal candidate for indoor wireless power transfer (WPT) enabled IoT applications.
KW - Electrically small antenna
KW - Huygens dipole antenna
KW - pattern reconfigurable antenna
KW - quasi-isotropic radiation
KW - wireless power transfer (WPT)
UR - http://www.scopus.com/inward/record.url?scp=85139774686&partnerID=8YFLogxK
U2 - 10.1109/AP-S/USNC-URSI47032.2022.9886862
DO - 10.1109/AP-S/USNC-URSI47032.2022.9886862
M3 - Conference article published in proceeding or book
AN - SCOPUS:85139774686
T3 - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
SP - 1422
EP - 1423
BT - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022
Y2 - 10 July 2022 through 15 July 2022
ER -