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A new design of a broadband circularly polarised square slot antenna array (CPSSAA) fed by a symmetric coplanar waveguide (CPW) for L- and S-band applications is presented. The proposed antenna is composed of 2×2 CPSS antennas and a sequentially rotated feed network. In this model, compared with the previous CPSSAA with an asymmetric fed structure, the impedance bandwidth of the antenna is increased, and is 71% wider than the impedance bandwidth of a previous similar design. The designed antenna operates over the frequency band 1-4.34 GHz (4.34:1, 125%) for VSWR <; 1.6 exhibiting a 120% (1.11-3.98 GHz, 3.58:1) circular polarisation bandwidth. The proposed CPSSAA can provide a peak gain of about 8.9 dBic at 3 GHz, with gain variations less than 1.5 dB at operating frequencies. Measured and simulated results validate the proposed design.
Published in:
Electronics Letters
(Volume:48
,
Issue:
10
)
Date of Publication: May 10 2012
- Page(s):
- 542 - 543
- ISSN :
- 0013-5194
- INSPEC Accession Number:
- 12696627
- Digital Object Identifier :
- 10.1049/el.2012.0294
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 17 May 2012
- Issue Date :
- May 10 2012
- Sponsored by :
- Institution of Engineering and Technology
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