TY - CONF
T1 - Reconfigurable circularly polarized cross-dipole antenna with a near-field resonant parasitic element
AU - Ta, Son Xuat
AU - Park, Ikmo
AU - Ziolkowski, Richard W.
N1 - Funding Information:
ACKNOWLEDGMENT This research is funded in partٻ by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 102.04-2016.02 and in part by Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 2017-0-00959, University ICT Basic Research Laboratory).
Funding Information:
This research is funded in part by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 102.04-2016.02 and in part by Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 2017-0-00959, University ICT Basic Research Laboratory).
Publisher Copyright:
© Institution of Engineering and Technology.All Rights Reserved.
PY - 2018
Y1 - 2018
N2 - This paper presents a polarization switchable circularly polarized (CP) antenna that consists of a compact single-feed crossed dipole loaded with a near-field resonant parasitic (NFRP) element. This antenna is placed above a metallic reflector to enhance its gain and broadside radiation pattern. A meander line with an arrowhead-shaped ending was applied to all arms of the crossed dipole and NFRP elements for compactness. By adjusting the end size of the NFRP element, the antenna was capable of switching its polarization from right-hand circular polarization to left-hand circular polarization and vice versa. The reconfigurability is realized by controlling the ON/OFF states of 8 PIN-diodes, which are inserted into the arrowhead endings of the NFRP element. For the RHCP mode, the antenna yields a |S11| < -10 dB bandwidth of 1.465-1.665 GHz and a 3-dB axial ratio (AR) bandwidth of 1.535-1.590 GHz. For the LHCP mode, the antenna yields a |S11| < -10 dB bandwidth of 1.50-1.69 GHz and a 3-dB AR bandwidth of 1.545-1.585 GHz. Moreover, in both modes, the antenna yields a good broadside radiation pattern with a gain of > 6.0 dBic and a radiation efficiency of > 70% across its operational bandwidth.
AB - This paper presents a polarization switchable circularly polarized (CP) antenna that consists of a compact single-feed crossed dipole loaded with a near-field resonant parasitic (NFRP) element. This antenna is placed above a metallic reflector to enhance its gain and broadside radiation pattern. A meander line with an arrowhead-shaped ending was applied to all arms of the crossed dipole and NFRP elements for compactness. By adjusting the end size of the NFRP element, the antenna was capable of switching its polarization from right-hand circular polarization to left-hand circular polarization and vice versa. The reconfigurability is realized by controlling the ON/OFF states of 8 PIN-diodes, which are inserted into the arrowhead endings of the NFRP element. For the RHCP mode, the antenna yields a |S11| < -10 dB bandwidth of 1.465-1.665 GHz and a 3-dB axial ratio (AR) bandwidth of 1.535-1.590 GHz. For the LHCP mode, the antenna yields a |S11| < -10 dB bandwidth of 1.50-1.69 GHz and a 3-dB AR bandwidth of 1.545-1.585 GHz. Moreover, in both modes, the antenna yields a good broadside radiation pattern with a gain of > 6.0 dBic and a radiation efficiency of > 70% across its operational bandwidth.
KW - Circular polarization
KW - Crossed dipole
KW - Near-field resonant parasitic element
KW - Switchable polarization
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M3 - Paper
AN - SCOPUS:85057310937
T2 - 12th European Conference on Antennas and Propagation, EuCAP 2018
Y2 - 9 April 2018 through 13 April 2018
ER -