TY - JOUR
T1 - Wideband, compact antennas with interdigitated magnetic-based near-field resonant parasitic elements
AU - Chen, Xiaoming
AU - Tang, Ming Chun
AU - Yi, Da
AU - Ziolkowski, Richard W.
N1 - Funding Information:
Manuscript received September 30, 2020; revised January 7, 2021; accepted January 21, 2021. Date of publication February 26, 2021; date of current version August 4, 2021. This work was supported in part by the National Natural Science Foundation of China under Contract 62001065 and Contract 62061006, in part by the Graduate Scientific Research and Innovation Foundation of Chongqing, China, under Contract CYB20066, in part by the Chongqing Natural Science Foundation under Contract cstc2019jcyjjqX0004, and in part by the Australian Research Council under Grant DP160102219. (Corresponding author: Ming-Chun Tang.) Xiaoming Chen, Ming-Chun Tang, and Da Yi are with the Key Laboratory of Dependable Service Computing in Cyber Physical Society Ministry of Education, College of Communication Engineering, Chongqing University, Chongqing 400044, China (e-mail: [email protected]).
Publisher Copyright:
© 2021 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
PY - 2021/8
Y1 - 2021/8
N2 - Wideband, compact antennas based on interdigitated magnetic-based near-field resonant parasitic (NFRP) elements are presented. The interdigitated NFRP elements, driven with coax-fed monopole antennas, facilitate the realization of two adjacent resonant modes whose combination yields the enhanced bandwidth. The resulting wideband compact antennas exhibit broadside radiation performance. Linearly polarized (LP) and circularly polarized (CP) prototypes based on this interdigitated NFRP element concept were designed, simulated, fabricated, and measured. The measured and simulated results are in good agreement. The NFRP radiating element of the LP antenna is electrically small with ka = 0.921 and yields a wide, 17.4%, −10 dB impedance bandwidth with a stable realized gain, ∼5.5 dBi, over its entire operational bandwidth. The NFRP radiating element of the CP antenna is also electrically small with ka = 0.923 and exhibits a wide, 8.6%, 3 dB axial ratio bandwidth. Stable realized gain, ∼5.2 dBi, and uniform radiation patterns along with relatively high radiation efficiency, RE > 88%, are achieved over its entire operational bandwidth.
AB - Wideband, compact antennas based on interdigitated magnetic-based near-field resonant parasitic (NFRP) elements are presented. The interdigitated NFRP elements, driven with coax-fed monopole antennas, facilitate the realization of two adjacent resonant modes whose combination yields the enhanced bandwidth. The resulting wideband compact antennas exhibit broadside radiation performance. Linearly polarized (LP) and circularly polarized (CP) prototypes based on this interdigitated NFRP element concept were designed, simulated, fabricated, and measured. The measured and simulated results are in good agreement. The NFRP radiating element of the LP antenna is electrically small with ka = 0.921 and yields a wide, 17.4%, −10 dB impedance bandwidth with a stable realized gain, ∼5.5 dBi, over its entire operational bandwidth. The NFRP radiating element of the CP antenna is also electrically small with ka = 0.923 and exhibits a wide, 8.6%, 3 dB axial ratio bandwidth. Stable realized gain, ∼5.2 dBi, and uniform radiation patterns along with relatively high radiation efficiency, RE > 88%, are achieved over its entire operational bandwidth.
KW - Bandwidth
KW - Compact antennas
KW - Interdigitated structures
KW - Linear and circular polarization
KW - Magnetic-based near-field resonant parasitic (NFRP) elements
KW - NFRP antennas
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U2 - 10.1109/TAP.2021.3060910
DO - 10.1109/TAP.2021.3060910
M3 - Article
AN - SCOPUS:85101805284
SN - 0018-926X
VL - 69
SP - 5036
EP - 5041
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 8
M1 - 9364855
ER -