Research On Wideband And Miniaturized Bowtie Shaped Slot Antennas

The field of antennas has been rapidly influenced by the influence of the communications field,and there are more and more types of antennas.Among them,ultra-wideband UWB antennas have a wide range of usage scenarios and excellent practical performance,and they are increasingly attracting high frequency attention from workers in the field of antennas..Communication electronics devices are becoming more and more compact as people's needs.Antennas are an indispensable module in communication systems,and their miniaturization has become a hot topic.In this paper,the characteristics of ultra-wideband and miniaturization are further studied on the basis of the traditional bow-tie slot antenna.By improving the antenna structure,the working bandwidth of the antenna is broadened,and the physical size of the antenna is reduced.The theoretical analysis,software simulation analysis and physical production measurement comparison are performed.The method of analysis studies the newly proposed model.The main work of this paper is as follows:1)A trapezoidal transition zone with a drop-shaped slot antenna is designed.The drop-shaped radiation slot unit is mainly proposed,and a trapezoidal slot is added between the CPW feed line and the drop-shaped slot as a transition zone.The new structure mainly broadens the antenna operating bandwidth and relatively reduces the physical size of the antenna.2)An H-shaped metal patch trapezoidal transition ribbon drop-shaped slot antenna is designed.The structure is based on a trapezoidal transition ribbon drop-type slot antenna structure,and the H-type metal patch is added on the back of the dielectric substrate,so that the S11 parameter curve of the antenna moves down at a high frequency of the working bandwidth,and the performance of the antenna in the working frequency band is more stable.3)A kind of short seam H-shaped metal patch trapezoidal transition belt drop-shaped slot antenna is designed.The structure is based on a drop-type slot antenna structure of a trapezoidal transition band with an H-shaped metal patch.A longitudinal short slit is added to the front plate of the dielectric substrate.The S11 parameter curve of the antenna is affected by the whole shift to the low frequency,and the resonant frequency is at the antenna.When the size is not changed,the miniaturization of the antenna can be achieved.4)Design a miniaturized broadband planar bowtie slot antenna based on ACPW.The structure adopts a drop-shaped radiation slot structure;the feed line on the right side of the coplanar waveguide is folded back to form an asymmetric coplanar waveguide;and a triangle gap is added as a transition zone at the connection between the feeder and the drop-shaped slot.Compared with the traditional bow-tie slot antenna,the physical size of the antenna is greatly reduced without the reduction of the working bandwidth.5)Another miniaturized broadband planar bowtie slot antenna based on ACPW is designed.The structure adopts a drop-shaped radiation slot structure,and a circular resonant ring is added in the slot;the feed line of the coplanar waveguide is fed back twice to form an asymmetric coplanar waveguide;and a long metal is added on the back of the dielectric substrate.Patch.The new structure achieves a widening of the bandwidth of the antenna operation,and also achieves a substantial reduction in the physical size of the antenna.