Suppression of Cross-Band Scattering in Multiband Antenna Arrays

This paper presents a novel method of suppressing cross-band scattering in dual-band dual-polarized antenna arrays. The method involves introducing chokes into low-band (LB) elements to suppress high-band (HB) scattering currents. The experimental results show that by inserting LB-pass HB-stop choke...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 67; no. 4; pp. 2379 - 2389
Main Authors Sun, Hai-Han, Ding, Can, Zhu, He, Jones, Bevan, Guo, Y. Jay
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Antenna radiation patterns
Antennas
Chokes
Distortion
Dual band
Dual polarization (waves)
Dual-band antenna arrays
Inductors
interleaved arrays
pattern distortion
Radiators
Scattering
scattering suppression
Strips
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ISSN0018-926X
1558-2221
DOI10.1109/TAP.2019.2891707

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Summary:This paper presents a novel method of suppressing cross-band scattering in dual-band dual-polarized antenna arrays. The method involves introducing chokes into low-band (LB) elements to suppress high-band (HB) scattering currents. The experimental results show that by inserting LB-pass HB-stop chokes into LB radiators, suppression of induced HB currents on the LB elements is achieved. This greatly reduces the pattern distortion of the HB array caused by the presence of LB elements. The array considered is configured as two columns of HB antennas operating from 1.71 to 2.28 GHz interleaved with a single column of LB antennas operating from 0.82 to 1.0 GHz. The realized array with choked LB element has stable and symmetrical radiation in both HB and LB.
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ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2019.2891707