Investigation of genetically optimized pixel monopole patch antennas for miniaturization and wideband applications

Authors : Çağatay Aydın

Pages : 965-973

Doi:10.28948/ngumuh.1679692

View : 75 | Download : 150

Publication Date : 2025-07-15

Article Type : Research Paper

Abstract :A pixel based synthesis method driven by a genetic algorithm is applied to a rectangular monopole patch antenna on FR 4. A 7x13 grid with 5 mm x 5 mm pixels is optimized with a single |S_11 | objective to realize two contrasting designs: a miniaturized antenna that shifts resonance from 3.5 GHz to 1 GHz while reducing the linear size by 65%, and a wideband antenna that maintains |S_11 |≤-10 dB across 1.9-6 GHz. Full-wave CST simulations validate both cases without altering substrate or feed. The miniaturized version is bandwidth limited, whereas the wideband version exhibits radiation pattern variation—shortcomings that stem from the deliberately simple cost function. Results confirm the versatility of pixel antennas and indicate that multi objective or machine learning assisted optimization can further enhance performance.
Keywords : Piksel anten, Anten optimizasyonu, Genetik algoritma, Minyatürizasyon, Geniş bant monopol

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