Scanning of the Near-field Focused Beam by Changing Frequency

Sohail M., Uyguroglu R., Oztoprak A. Y.

APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL, cilt.38, sa.3, ss.177-183, 2023 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 3
  • Basım Tarihi: 2023
  • Doi Numarası: 10.13052/2023.aces.j.380303
  • Dergi Adı: APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Compendex, DIALNET
  • Sayfa Sayıları: ss.177-183
  • Orta Doğu Teknik Üniversitesi Kuzey Kıbrıs Kampüsü Adresli: Evet

Özet

- A new antenna array system is introduced which enables the movement of a near-field focused beam by change of frequency. The shift in the beam is achieved by using multi-wavelength transmission lines between successive elements of the array. At the designed frequency the beam is focused at the focal point. Due to the differences in the transmission line lengths feeding the antenna elements, a progressive phase change occurs between these elements. These phase differences between the elements cause a shift in the beam position. An 8x8 patch antenna array system was designed at 2.4 GHz on a microstrip to implement the proposed system. Two substrates were used: one for the patch antenna array and the other one for the feed network and transmission lines. A full-wave simulation model was used to analyze this design and demonstrate 2.2025 GHz to 2.5750 GHz.