Design of Novel CPW Cross-Fed Antenna

Lin, Shan; Huang, Guan‐Long; Run-nan, Cai; Zhang, Xueying; Zhang, Xingqi

doi:10.2528/pierc11070107

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…One thing to note here is that the analysis is the same as in [7], but the distinction between the antenna in this paper and [7] is that the proposed antenna is free of metal fly line. This ensures the electromagnetic wave's propagation in the medium as little as possible, which decreases the dielectric loss and improves the efficiency of the antenna.…”

Section: Antenna Structure and Working Principlementioning

confidence: 99%

“…The gain of antenna improves with the increase in the number of coaxial radiators, which can reach 8 dBi or higher. However, the bandwidth is relatively narrow; (2) printed dipole array antenna fed by balanced microstrip line [4][5][6]: omnidirectional radiation is achieved by the closely arranged printed dipole array; (3) CPW cross-fed antenna [7]: this is a new kind of antenna which evolved from COCO antenna. By adopting radiant loads, the antenna can obtain a relative bandwidth up to 19.2% and an omnidirectional gain of 5.2 dBi.…”

Section: Introductionmentioning

confidence: 99%

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Design of Omnidirectional High-Gain Antenna With Broadband Radiant Load in C Wave Band

Lin

Liu²,

Liu³

et al. 2012

PIER C

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Abstract-Three novel structures of coplanar waveguide (CPW) cross-coupling-fed antenna with different kinds of broadband radiant loads, which are applied in C wave band, are presented. The simulated results by CST MICROWAVE STUDIO R indicate that these structures of antenna are able to expand bandwidth, improve gain and maintain good omnidirectional radiation characteristics while the sizes of the structures are relatively small. The antenna surface current simulated by CST is extracted, explaining the mechanism of broadband, high-gain and omnidirectional radiation characteristics of the antenna. Three structures of antenna with different kinds of broadband radiant loads are designed, manufactured and measured. The antenna is printed on FR-4 epoxy substrate with 0.5 mm thickness. According to the measured results of these three structures, the operating bandwidths with a reflection coefficient lower than −10 dB are 4.27∼4.90 GHz, 4.04∼5.07 GHz and 4.05∼4.87 GHz. The relative bandwidths are up to 13.7%, 22.6% and 18.4% respectively. The Hplane maximum omnidirectional gains are 6.6 dB (4.8 GHz), 6.8 dB (4.6 GHz) and 7.8 dB (4.6 GHz), and the maximum magnitudes of unroundness are 3.0 dB, 2.8 dB and 2.8 dB (4.5 GHz) respectively. The measured and simulated results do not differ much from each other. The overall sizes of the antennas are 133.5 mm × 14.4 mm (triangular load), 148.2 mm × 18 mm (cutting semi-circular load) and 145.65 mm × 16.1 mm (circular load) respectively, and the gains per electronic length on the polarization direction are 3.1 dB, 3.1 dB and 3.6 dB, which are relatively high. These three structures of antennas are suitable for communication systems working in C wave band.

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Section: Antenna Structure and Working Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%