Browsing by Author "Ghayoula, Ridha"

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    • Frequency and pattern reconfigurable antenna for emerging wireless communication systems 

      Iqbal, Amjad; Smida, Amor; Khaddaj Mallat, Nazih Khaddaj; Ghayoula, Ridha; Elfergani, Issa; Rodriguez, Jonathan; Kim, Sunghwan (MDPI AG., 2019)
      A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a ...

    • A multiband SSr diode RF rectifier with an improved frequency ratio for biomedical wireless applications 

      Muhammad, Surajo; Waly, Mohamed Ibrahim; AlJarallah, Nasser Ali; Ghayoula, Ridha; Negm, Ahmed S.; Smida, Amor; Iqbal, Amjad; Tiang, Jun Jiat; Roslee, Mardeni (Nature Research, 2023-12)
      This paper described a four-band implantable RF rectifier with simplified circuit complexity. Each RF-rectifier cell is sequentially matched to the four operational frequencies to accomplish the proposed design. The proposed ...