A CPW-fed planar log-periodic dipole antenna with suppressed cross polarization

2010 ◽  
Author(s):  
Keng-Chih Lin ◽  
Yi-Cheng Lin
Keyword(s):  
Dipole Antenna ◽  
Cross Polarization

Enhanced cross-polarization isolation of loop-dipole antenna array backed by dielectric cavities for 5G base stations

2021 ◽  
pp. 1-17
Author(s):  
Yiran Da ◽  
Xiaoming Chen ◽  
Mengting Li ◽  
Zhenyuan Zhang ◽  
Azremi Abdullah Al-Hadi ◽  
...  
Keyword(s):  
Antenna Array ◽  
Dipole Antenna ◽  
Base Stations ◽  
Cross Polarization

scholarly journals Suppression of Cross-Polarization of the Microstrip Integrated Balun-Fed Printed Dipole Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Huang Jingjian ◽  
Zhang Xiaofa ◽  
Xie Shaoyi ◽  
Wu Weiwei ◽  
Yuan Naichang
Keyword(s):  
Frequency Band ◽  
Dipole Antenna ◽  
Equivalent Model ◽  
Substrate Thickness ◽  
Cross Polarization ◽  
Engineering Applications ◽  
Novel Structure ◽  
The Cross ◽  
Polarization Level

The high cross-polarization of the microstrip integrated balun-fed printed dipole antenna cannot meet the demands of many engineering applications. This kind of antennas has high cross-polarization levels (about −20 dB). And we find that the high cross-polarization radiation is mainly produced by the microstrip integrated balun rather than the dipole itself. The very limited method to lower the cross-polarization level of this kind of antennas is to reduce the substrate thickness. In this paper, to improve the low cross-polarized performance, firstly, an equivalent model is presented to analyze the cross-polarization radiation. Secondly, a novel structure with low cross-polarization is proposed. The microstrip integrated balun is enclosed by a center slotted cavity. The E-field of the microstrip integrated balun is transformed parallel to the dipole arms by the slot, so the radiation of the cross-polarized component is suppressed. Measured results show that this structure can achieve a bandwidth wider than 40% while reducing the cross-polarization level to less than −35 dB within the frequency band.

scholarly journals Cross-polarization level in radiation from a microstrip dipole antenna

1988 ◽  
Vol 36 (9) ◽  
pp. 1197-1203 ◽  
Author(s):  
A. Hoorfar ◽  
K.C. Gupta ◽  
D.C. Chang
Keyword(s):  
Dipole Antenna ◽  
Cross Polarization ◽  
Polarization Level

A Novel Broadband Printed Dipole Antenna With Low Cross-Polarization

2007 ◽  
Vol 55 (11) ◽  
pp. 3091-3093 ◽  
Author(s):  
Zhanwei Zhou ◽  
Shiwen Yang ◽  
Zaiping Nie
Keyword(s):  
Dipole Antenna ◽  
Cross Polarization

scholarly journals Magnetoelectric Dipole Antenna with Dual Polarization and High Isolation

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Xujun Yang ◽  
Lei Ge ◽  
Dengguo Zhang ◽  
Chow-Yen-Desmond Sim
Keyword(s):  
Transmission Lines ◽  
Dipole Antenna ◽  
Cross Polarization ◽  
Radiation Patterns ◽  
Dual Polarization ◽  
High Isolation ◽  
Microstrip Lines ◽  
Directional Radiation ◽  
Dual Polarized ◽  
Coaxial Lines

A dual-polarized aperture-coupled magnetoelectric (ME) dipole antenna is presented in this paper. The feeding network is based on substrate-integrated coaxial lines (SICLs). To describe the effect of the SICL on improving the isolation, the ME dipole with another two different feeding configurations, microstrip lines and striplines, respectively, is compared. As such, the coupling between the transmission lines is tremendously reduced and the isolation between the two input ports of different polarization is enhanced. An antenna prototype is fabricated and tested, exhibiting good performances, including an isolation level of higher than 30 dB between the two input ports and gains of more than 9.5 dBi. Besides, the proposed design is capable of achieving stable directional radiation patterns with cross-polarization levels lower than −22 dB and back radiation levels lower than −24 dB.

scholarly journals Design of high directional crossed dipole antenna with metallic sheets for UHF and VHF applications

2017 ◽  
Vol 7 (1.5) ◽  
pp. 42
Author(s):  
I. Govardhani ◽  
M. Venkata Narayana ◽  
A. Navya ◽  
A. Venkatesh ◽  
S. Charles Spurjeon ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Return Loss ◽  
High Gain ◽  
Dipole Antenna ◽  
Radiation Efficiency ◽  
Dual Band ◽  
Cross Polarization ◽  
Radiation Patterns ◽  
Metallic Plates

A compact dual band cross dipole antenna surrounded with metallic plates at five sides has been proposed in this article. comparative analysis has been done between the dipole and cross dipole antenna. On comparing these two antennas the proposed antenna has the high gain of 7db and radiation efficiency of 95 percent. The peak directivity of the proposed antenna is 5DB and its front to back ration is 60. The return loss, gain, radiation patterns and co polarization and cross polarization of the antenna has been observed and analysed using AN-soft HFSS v13.The proposed antenna works at the range of 0.6GHz to 1.5GHz which covers the applications like GSM, GNSS and some of the applications which covers in the range of UHF and VHF.

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