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Conventional patch antenna with same dimension with proposed antenna: (a) structure, (b) return loss and (c) gain
Source publication
Abstract A wideband and high gain circularly polarised patch antenna has been introduced. The proposed antenna combines an aperture coupled feeding with a T‐slot, four metallic vias and a patch with a diagonal slot to present high gain and wide 3‐dB axial ratio bandwidth (BW) characteristics. In this study, a rectangular patch (0.6 λ0 × 0.5 λ0 at f...
Citations
... Regarding the state-of-the-art works for the iris-fed patch antenna's electromagnetic modelling, it turns out that the current trend is to use simulation tools such as HFSS and CST which are essentially based on methods that require a 3D mesh [14]. Other works have been based on numerical models as in [7,8] which used the modal expansion model and the method of Moments respectively. ...
... out that the current trend is to use simulation tools such as HFSS and CST which are essentially based on methods that require a 3D mesh [14]. Other works have been based on numerical models as in [7,] and [8] which used the modal expansion model and the method of Mmoments respectively. ...
In this paper, a microstrip patch antenna fed by a waveguide using an end-wall iris through ground plane has been modelled. The iris feed technique was proposed to overcome the narrow bandwidth problem of microstrip patch antenna. The iris is sized so that it is resonant and subsequently the antenna operates under the fusion of two modes relating to the iris and the patch, resulting in a wideband radiation characteristic with dual resonance. Measurement demonstrates the single bandwidth dual resonance type and the radiation bandwidth of (8 GHz-10.6 GHz). In order to show the impact of the iris feed technique on microstrip patch antenna’s bandwidth, a comparison with some state-of-the-art works proposing various bandwidth enhancement techniques in the X-band is made. The proposed prototype, with a size of 1.76λ0 X 1.65λ0 X 1.29λ0 , is more compact than several designs. It has a fractional bandwidth of 27.9%, thus it presents the prototype with the widest bandwidth with the simplest design fabrication. With regard to the electromagnetic modelling, this work is oriented towards the use of the hybrid MOM-GEC method in order to be able to perform a rigorous electromagnetic. It has been found that the MOM-GEC model is more efficient in terms of memory requirements and approximately four times faster than HFSS simulator software.
