TY - GEN
T1 - Electrically small, low profile, broadside radiating LP and CP Huygens dipole antennas
AU - Lin, Wei
AU - Ziolkowski, Richard W
AU - Tang, Ming Chun
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/19
Y1 - 2017/12/19
N2 - Electrically small Huygens dipole antennas are reported that are low profile, broadside radiating, have high radiation efficiencies, and are either linear (LP) or circularly (CP) polarized. The Huygens behavior, i.e., a high front-To-back ratio with a cardioid-like pattern, is realized by exciting two (LP) or two pairs (CP) of complementary electric and magnetic dipole radiators, simultaneously having the same amplitude and proper phase. These designs are achieved with near-field resonant parasitic (NFRP) Egyptian axe dipole (EAD) elements that act as the electric radiators and capacitively loaded loop (CLL) NFRP elements that act as the magnetic radiators. By efficiently combining the crossed EAD and CLL NFRP elements together with proper excitations by a single (LP) or a pair (CP) of driven dipole elements, the resulting electrically small antennas generate broadside Huygens radiation patterns. They have ka < 1.0, are low-profile, ≤ 0.04 λ0; exhibit good radiation performance with better than 4.5 dBi LP and 4.5 dBic CP peak realized gains; have > 20 dB front-To-back ratios; and have > 90% radiation efficiencies at their resonant frequencies. These antenna systems are quite suitable for a variety of compact narrow bandwidth applications including wireless power transfer (WPT), unmanned aerial vehicles (UAVs), and on-and off-body sensor networks.
AB - Electrically small Huygens dipole antennas are reported that are low profile, broadside radiating, have high radiation efficiencies, and are either linear (LP) or circularly (CP) polarized. The Huygens behavior, i.e., a high front-To-back ratio with a cardioid-like pattern, is realized by exciting two (LP) or two pairs (CP) of complementary electric and magnetic dipole radiators, simultaneously having the same amplitude and proper phase. These designs are achieved with near-field resonant parasitic (NFRP) Egyptian axe dipole (EAD) elements that act as the electric radiators and capacitively loaded loop (CLL) NFRP elements that act as the magnetic radiators. By efficiently combining the crossed EAD and CLL NFRP elements together with proper excitations by a single (LP) or a pair (CP) of driven dipole elements, the resulting electrically small antennas generate broadside Huygens radiation patterns. They have ka < 1.0, are low-profile, ≤ 0.04 λ0; exhibit good radiation performance with better than 4.5 dBi LP and 4.5 dBic CP peak realized gains; have > 20 dB front-To-back ratios; and have > 90% radiation efficiencies at their resonant frequencies. These antenna systems are quite suitable for a variety of compact narrow bandwidth applications including wireless power transfer (WPT), unmanned aerial vehicles (UAVs), and on-and off-body sensor networks.
KW - Circular polarization
KW - Huygens sources
KW - directivity
KW - electrically small antennas
KW - linear polarization
KW - near-field resonant parasitic elements
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U2 - 10.1109/ISANP.2017.8228739
DO - 10.1109/ISANP.2017.8228739
M3 - Conference contribution
AN - SCOPUS:85046414837
T3 - 2017 International Symposium on Antennas and Propagation, ISAP 2017
SP - 1
EP - 2
BT - 2017 International Symposium on Antennas and Propagation, ISAP 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 International Symposium on Antennas and Propagation, ISAP 2017
Y2 - 30 October 2017 through 2 November 2017
ER -