scholarly journals Dual-Polarized Omnidirectional Antenna With High Isolation Based on the Theory of Characteristic Modes

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 73416-73422
Author(s):  
Xi Wang Dai ◽  
Guo Qing Luo ◽  
Ya Hui Qian ◽  
Xiao Hong Zhang ◽  
Hua Yan Jin ◽  
...  
2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Deqiang Yang ◽  
Huiling Zeng ◽  
Yubo Wen ◽  
Meng Zou ◽  
Jin Pan

A wideband dual-polarized planar antenna is designed and analyzed by using the theory of characteristic modes (TCM). The eigenvalue, eigencurrent, characteristic pattern, and modal weighting coefficient are analyzed to bring physical insight to this kind of antenna. The results demonstrate that there are two modes resonant in the operating band for each polarization, which have been combined to form a wider frequency band. A bandwidth of 60.2% (1.72–3.2 GHz) for VSWR < 1.5 with high isolation of 32 dB is achieved simultaneously. The size of the radiator structure is 0.33λ0× 0.33λ0× 0.22λ0(λ0refers to the center operating frequency).


2019 ◽  
Vol 85 ◽  
pp. 65-83
Author(s):  
Yuwei Zhang ◽  
Shu Lin ◽  
Shang Yu ◽  
Shoulan Liu ◽  
Guanjun Liu ◽  
...  

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Peng Luo ◽  
Chengguo Nie ◽  
Qing Gong ◽  
Yuehui Cui

A new wideband dual-polarized (DP) quasi-omnidirectional antenna is proposed. The DP antenna consists of a vertical slot for horizontal polarization (HP) and a folded horizontal slot for vertical polarization (VP). A tapered strip is employed to coupling feed the vertical slot while a straight strip is used to excite the horizontal slot. Due to the coupling feed and the orthogonality between the vertical and horizontal slots, the DP antenna features a wide bandwidth and a very high isolation. The simulated isolation is higher than 70 dB, although the measured isolation is about 50 dB. As experimental results indicate, the DP antenna realizes an impedance bandwidth (BW) of 45% (1.7–2.73 GHz) with quasi-omnidirectional radiation patterns for both HP and VP. The DP quasi-omnidirectional antenna may be packaged into a radome with a shape of a blade for mobile applications in high-speed vehicles.


2016 ◽  
Vol 61 ◽  
pp. 105-113 ◽  
Author(s):  
Lei Zhou ◽  
Yong-Chang Jiao ◽  
Zi-Bin Weng ◽  
Yihong Qi ◽  
Tao Ni

Author(s):  
Jing Wang ◽  
Wei Wang ◽  
Aimeng Liu ◽  
Meng Guo ◽  
Zhenyu Wei

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