Scanning Rate Enhancement of Leaky-Wave Antennas Using Slow-Wave Substrate Integrated Waveguide Structure

In this communication, we propose a high scanning rate leaky-wave antenna (LWA) based on a slow-wave substrate integrated waveguide (SIW) structure. The slow-wave effect is introduced by etching periodical slots on the top surface of SIW. The LWA radiation is subsequently realized by introducing sin...

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Published inIEEE transactions on antennas and propagation Vol. 66; no. 7; pp. 3747 - 3751
Main Authors Guan, Dong-Fang, Zhang, Qingfeng, You, Peng, Yang, Zhang-Biao, Zhou, Yang, Yong, Shao-Wei
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antennas
Bandwidth
Bandwidths
Cutoff frequency
Frequency measurement
Frequency modulation
Group velocity
Harmonic analysis
Leaky-wave antenna (LWA)
Polaritons
Scanning
scanning rate
slow wave
substrate integrated waveguide (SIW)
Substrate integrated waveguides
Substrates
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Abstract In this communication, we propose a high scanning rate leaky-wave antenna (LWA) based on a slow-wave substrate integrated waveguide (SIW) structure. The slow-wave effect is introduced by etching periodical slots on the top surface of SIW. The LWA radiation is subsequently realized by introducing sinusoidal modulation to the slots profile. Such a structure significantly improves the scanning rate of LWA due to the small group velocity at the slow-wave region. Simulation and measured results indicate that the proposed LWA scans a wide angle in a narrow bandwidth near the cutoff frequency of surface plasmon polariton. Within the frequency band 13.5-13.9 GHz (3% relative bandwidth), the measured scanning angle is from 2° to 37° with the measured gain all above 9.2 dBi.
AbstractList In this communication, we propose a high scanning rate leaky-wave antenna (LWA) based on a slow-wave substrate integrated waveguide (SIW) structure. The slow-wave effect is introduced by etching periodical slots on the top surface of SIW. The LWA radiation is subsequently realized by introducing sinusoidal modulation to the slots profile. Such a structure significantly improves the scanning rate of LWA due to the small group velocity at the slow-wave region. Simulation and measured results indicate that the proposed LWA scans a wide angle in a narrow bandwidth near the cutoff frequency of surface plasmon polariton. Within the frequency band 13.5-13.9 GHz (3% relative bandwidth), the measured scanning angle is from 2° to 37° with the measured gain all above 9.2 dBi.
Author Guan, Dong-Fang
Yang, Zhang-Biao
You, Peng
Zhou, Yang
Yong, Shao-Wei
Zhang, Qingfeng
Author_xml – sequence: 1
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  organization: College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
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  orcidid: 0000-0002-0038-0694
  surname: Zhang
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  email: zhang.qf@sustc.edu.cn
  organization: Department of Electronics and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
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  surname: You
  fullname: You, Peng
  organization: College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
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  organization: College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
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  surname: Yong
  fullname: Yong, Shao-Wei
  organization: College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China
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Snippet In this communication, we propose a high scanning rate leaky-wave antenna (LWA) based on a slow-wave substrate integrated waveguide (SIW) structure. The...
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SubjectTerms Antennas
Bandwidth
Bandwidths
Cutoff frequency
Frequency measurement
Frequency modulation
Group velocity
Harmonic analysis
Leaky-wave antenna (LWA)
Polaritons
Scanning
scanning rate
slow wave
substrate integrated waveguide (SIW)
Substrate integrated waveguides
Substrates
Title Scanning Rate Enhancement of Leaky-Wave Antennas Using Slow-Wave Substrate Integrated Waveguide Structure
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