Wen Qiye
+
Doctor of Engineering
With Certificate of Graduation for Doctorate Study
Personal Information
Gender:Male
Date of Employment:2005-04-01
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Doctor of Engineering
With Certificate of Graduation for Doctorate Study
Gender:Male
Date of Employment:2005-04-01
E-Mail:2dfae7fbc3b4eee77cbc83e6dc0991c98a03764bcc68440b36c566a8436e2ae8a1583db720d39738c58ecf51abdfc0792241b0c642189c27038028cf0502664fcf2ad60fb7a8e4099e84c7a18122e783ed3307500b5c9fbe19c3e89a1d71dd219103fa75b78e4c54f92297151d3fe6fc58621daf6a763c7e396f0951bd7581e1
Email:c045ee02cf98f3c8badd036e7bb5177b47f43a3c5e8068fdb1fbaf5b1a2b1c379d52673dfd4418a27d6de7464b5824033fcc7853b02961697e9d54402740773f73b957f231b409a9b1301b36a226460ea4a21a697903124a28bd1e0b5beb7fc196c290c4a3c04f9e1afef461deb669e658a79d928965266b30d2529ad49f5d79
Affiliation of Author(s):[1]South China Univ Technol, Sch Elect & Informat Engn, Guangdong Key Lab Millimeter Waves & Terahertz, Guangzhou 510641, Guangdong, Peoples R China;[2]Hohai Univ, Comp & Informat Coll, Nanjing, Peoples R China;[3]Univ Elect Sci & Technol China, State Key Lab Elect Films & Integrated Devices, Chengdu, Peoples R China
Journal:INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
Key Words:frequency-reconfigurable; metasurface-based antenna; phase transition; vanadium dioxide
Abstract:In this article, a millimeter-wave frequency-reconfigurable metasurface antenna by electrically controlling vanadium dioxide (VO2) is proposed and studied. As a phase change material, VO2 is an insulator at room temperature but can turn into high conductivity metallic state when activated by continuous direct current (DC) voltage. By integrating the VO2 film between two simple rectangle metasurface cells, a frequency-reconfigurable paired metasurface structure (FRPMS) is achieved. The FRPMS can be considered as one unit when VO2 film is activated to metallic state while as two independent cells when VO2 film is in insulating state. In this way, the FRPMS can operate, respectively at 28 and 38 GHz with independent tunability. Moreover, a coplanar and staggered DC bias circuit with little effect on radiation is designed to switch the operating modes of VO2 easily. The antenna is fed by a stepped waveguide with ridges through a loop slot, which is suitable for dual-band feeding with large frequency ratio. One prototype is fabricated and measured for demonstration. When the VO2 film is in metallic state, the measured working band covers from 28.5 to 29.6 GHz with the maximum gain of about 7.1 dBi. When cooled down to insulating state, the antenna can work in a higher band from 36.7 to 38.3 GHz with the maximum gain of about 7.9 dBi. Due to the advantages of simple structure, high gain and easy tuning, the antenna can be expected to use in mmW wireless communication.
Document Type:Article
Volume:32
Issue:12
ISSN No.:1096-4290
Translation or Not:no
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