Dual-band dual-polarised microstrip antenna with improved inter-port isolation

This Letter presents the development of a dual linearly polarised microstrip antenna for S- and C-band with improved isolation and bandwidth. The antenna is dual linearly polarised at each of the bands. The S-band patch is proximity coupled to two orthogonal feed lines, whereas the C-band patches ar...

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Bibliographic Details
Published in:Electronics letters 2019-03, Vol.55 (5), p.239-240
Main Authors: Chakrabarti, S, Chakraborty, A
Format: Article
Language:English
Subjects:
antenna feeds
antenna radiation patterns
Antennas and propagation
C‐band patches
C‐band ports
dual linearly polarised microstrip antenna
dual‐band dual‐polarised microstrip antenna
electromagnetic wave polarisation
improved inter‐port isolation
microstrip antennas
microwave antennas
multifrequency antennas
mutually orthogonal feed lines
S‐band patch
S‐band ports
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Summary:This Letter presents the development of a dual linearly polarised microstrip antenna for S- and C-band with improved isolation and bandwidth. The antenna is dual linearly polarised at each of the bands. The S-band patch is proximity coupled to two orthogonal feed lines, whereas the C-band patches are aperture coupled to other two mutually orthogonal feed lines. The antenna results in an impedance bandwidth ≥ 3.65% with an isolation ≥ 26 dB at the S-band ports. At the C-band ports, it also displays an isolation ≥ 45 dB over the entire operating bandwidth of ≥ 21%. All these results are improved compared to the earlier reported investigations.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2018.8005