Abstract
This article proposed a new geometric design methodology for the systematic expansion of fractal linear and planar array antennas. Using this proposed geometric design methodology any deterministic polygon shape can be constructed. In this article, two element fractal linear and triangular array antennas are examined using proposed methodology up to four iterations of two expansion factors. Due to the repetitive nature of the proposed geometric design methodology, both linear and planar fractal arrays shows multi-beam behavior with excellent array factor properties. The behavior of the proposed arrays shows better performance than linear and planar fractal array antennas generated by concentric circular ring sub array geometric generator. Triangular planar fractal array of expansion factor two at fourth iteration achieved a single valued beam width of 3.80 with -31.6 side lobe level. The suggested fractal arrays are analyzed and simulated by MATLAB-13 programming.
Highlights
Array antennas play a key role in military and defense applications due to their less side lobes, fast beam scanning, high directive gain and resolution properties [1]-[3]
The behavior of the proposed arrays shows better performance than linear and planar fractal array antennas generated by concentric circular ring sub array geometric generator
Wide band and multiband characteristics of fractal array antennas depends on fractal geometric nature and how they are generated with different expansion factors
Summary
Array antennas play a key role in military and defense applications due to their less side lobes, fast beam scanning, high directive gain and resolution properties [1]-[3]. Fractal array antennas are find applications in both military and civilian due to their high gain with less number of antenna elements, UWB behavior, multiband characteristics and abated mutual coupling and side lobes [4]-[6]. Design methodologies of fractal geometric nature are plays a vital role in the designing of linear, planar and conformal fractal array antennas. Wide band and multiband characteristics of fractal array antennas depends on fractal geometric nature and how they are generated with different expansion factors. These array antennas are geometry based not material based. Different types of fractal array antennas like triadic cantor linear and planar fractal arrays, Sierpinski carpet and triangular, square fractal arrays, pentagonal, hexagonal, heptagonal and octagonal fractal array antennas have implemented using this design methodology [9], [10]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
