High Scanning Rate Millimeter-Wave Circularly Polarized CTS Leaky Wave Antenna

A millimeter-wave (mmW) circularly polarized (CP) continuous transverse stub (CTS) leaky wave antenna (LWA) with a high scanning rate is proposed in this communication. The LWA is composed of an improved parallel plate waveguide (PPW) based CTS array and a compact power divider-based linear source g...

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Published inIEEE transactions on antennas and propagation Vol. 72; no. 7; pp. 6087 - 6092
Main Authors Cao, Qi-Dong, Yang, Xue-Xia, Yu, Fan, Gao, Steven
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Antennas
Bandwidth
Circular polarization
continuous transverse stub (CTS)
Gain
high scanning rate
Impedance
Insertion loss
leaky wave antenna (LWA)
Leaky waves
Millimeter wave communication
Millimeter waves
millimeter-wave (mmW)
Parallel plates
Power dividers
Probes
Waveguides
Online AccessGet full text
ISSN0018-926X
1558-2221
DOI10.1109/TAP.2024.3349674

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Abstract A millimeter-wave (mmW) circularly polarized (CP) continuous transverse stub (CTS) leaky wave antenna (LWA) with a high scanning rate is proposed in this communication. The LWA is composed of an improved parallel plate waveguide (PPW) based CTS array and a compact power divider-based linear source generator. The high scanning rate is obtained by alternatively arranging periodic ridges on both plates of bent PPW, which can be regarded as an interdigital structure and can extend the current path. A low-profile single-layer linear-to-circular polarizer (LCP) with a wide-incident angle is designed to realize CP radiation. In order to increase the incident angle of the LCP, a modified metasurface unit based on the Jerusalem cross (JC) is presented. To verify the proposed design, a 12 element LWA with the LCP is simulated and fabricated. The measured results show that the LWA achieved a CP scanning range from −56° to 52° with the −10 dB impedance bandwidth (BW) of 11.7% (28.3-31.8 GHz). The scanning rate is 9.3°/%BW. Within the beam scanning range, the axial ratio (AR) is less than 2.9 dB and the maximum gain is 25.5 dBi. The insertion loss (IL) of LCP is lower than 1.1 dB.
AbstractList A millimeter-wave (mmW) circularly polarized (CP) continuous transverse stub (CTS) leaky wave antenna (LWA) with a high scanning rate is proposed in this communication. The LWA is composed of an improved parallel plate waveguide (PPW) based CTS array and a compact power divider-based linear source generator. The high scanning rate is obtained by alternatively arranging periodic ridges on both plates of bent PPW, which can be regarded as an interdigital structure and can extend the current path. A low-profile single-layer linear-to-circular polarizer (LCP) with a wide-incident angle is designed to realize CP radiation. In order to increase the incident angle of the LCP, a modified metasurface unit based on the Jerusalem cross (JC) is presented. To verify the proposed design, a 12 element LWA with the LCP is simulated and fabricated. The measured results show that the LWA achieved a CP scanning range from −56° to 52° with the −10 dB impedance bandwidth (BW) of 11.7% (28.3–31.8 GHz). The scanning rate is 9.3°/%BW. Within the beam scanning range, the axial ratio (AR) is less than 2.9 dB and the maximum gain is 25.5 dBi. The insertion loss (IL) of LCP is lower than 1.1 dB.
Author Yang, Xue-Xia
Gao, Steven
Cao, Qi-Dong
Yu, Fan
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Snippet A millimeter-wave (mmW) circularly polarized (CP) continuous transverse stub (CTS) leaky wave antenna (LWA) with a high scanning rate is proposed in this...
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SubjectTerms Antenna arrays
Antennas
Bandwidth
Circular polarization
continuous transverse stub (CTS)
Gain
high scanning rate
Impedance
Insertion loss
leaky wave antenna (LWA)
Leaky waves
Millimeter wave communication
Millimeter waves
millimeter-wave (mmW)
Parallel plates
Power dividers
Probes
Waveguides
Title High Scanning Rate Millimeter-Wave Circularly Polarized CTS Leaky Wave Antenna
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https://www.proquest.com/docview/3078107099
Volume 72
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