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Wideband Microstrip Slot Antenna Using Shape Blending Algorithm

Chaitanya Durbhakula, Srilakshmi Aouthu, E. Sreenivasa Rao, Bandi Manasa, Vemula Manisha, Manikya Krishna


For the effective wireless communication over long distances, the antennas with wideband operation and narrow beam widths are the requirements for the evolving modern mobile devices. This paper presents the design and analysis of the wideband patch antenna with slot using shape blending algorithm. The major advantage of this algorithm is to optimize the shape of the radiating element by applying Heaviside function to improve the performance characteristics of the antenna. The antenna is designed over FR4 substrate with the relative permittivity of 4.4 and height 1.6 mm. The antenna is resonating at 3.8 GHz and 10 GHz and corresponding dimensions are calculated according by using the cavity model. The antenna is simulated by using HFSS tool for the suitable shape generated by applying the shape blending algorithm in MATLAB. The bandwidth is improved by nearly 22% by applying the algorithm and offers nearly 900 MHz. A fabricated prototype is developed and tested, and the results are validated and are in good agreement.


Antenna, patch, shape blending, wideband, microstrip

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