TY - JOUR
T1 - Compact Dual-Band Dual-Mode Antenna with Omni-/Unidirectional Radiation Characteristics
AU - Mao, Chun Xu
AU - Werner, Douglas H.
AU - Zhang, Yao
AU - Zhang, Xiu Yin
N1 - Funding Information:
This work was supported by the National Science Foundation ASSIST Nanosystems ERC under Award EEC-1160483.
Funding Information:
Manuscript received September 13, 2019; accepted October 13, 2019. Date of publication October 16, 2019; date of current version December 19, 2019. This work was supported by the National Science Foundation ASSIST Nanosystems ERC under Award EEC-1160483. (Corresponding author: Chun-Xu Mao.) C.-X. Mao and D. H. Werner are with the Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802 USA (e-mail: cxm2088@psu.edu; dhw@psu.edu).
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2019/12
Y1 - 2019/12
N2 - A novel dual-band dual-mode antenna that operates at 2.45/5.8 GHz is proposed in this letter. The antenna exhibits linearly polarized omnidirectional radiation in the low band, and circularly polarized broadside radiation in the high band. To improve the 3 dB axial-ratio (AR) bandwidth, both truncated patches and a sequential rotation technique are combined together in the antenna design. The omnidirectional radiation in the low band is achieved by exciting four open-ended slots etched in the ground plane for the first time. The four slots form a magnetic-dipole-like current distribution along the edge of the ground plane, resulting in omnidirectional radiation. The low- and high-band operations are seamlessly integrated into a common design, sharing the same structure. This work provides a novel approach for improving the versatility of a radio frequency front-end subsystem without increasing footprint. The proposed antenna is prototyped and measured, showing good results in terms of impedance/AR bandwidths, isolation, radiation, and polarization.
AB - A novel dual-band dual-mode antenna that operates at 2.45/5.8 GHz is proposed in this letter. The antenna exhibits linearly polarized omnidirectional radiation in the low band, and circularly polarized broadside radiation in the high band. To improve the 3 dB axial-ratio (AR) bandwidth, both truncated patches and a sequential rotation technique are combined together in the antenna design. The omnidirectional radiation in the low band is achieved by exciting four open-ended slots etched in the ground plane for the first time. The four slots form a magnetic-dipole-like current distribution along the edge of the ground plane, resulting in omnidirectional radiation. The low- and high-band operations are seamlessly integrated into a common design, sharing the same structure. This work provides a novel approach for improving the versatility of a radio frequency front-end subsystem without increasing footprint. The proposed antenna is prototyped and measured, showing good results in terms of impedance/AR bandwidths, isolation, radiation, and polarization.
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U2 - 10.1109/LAWP.2019.2947808
DO - 10.1109/LAWP.2019.2947808
M3 - Article
AN - SCOPUS:85077047808
SN - 1536-1225
VL - 18
SP - 2657
EP - 2660
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 12
M1 - 8871189
ER -