A wideband circularly polarized CPW-fed substrate integrated waveguide based antenna array for ISM band applications
Sarosh Ahmad,
Nabil Cherif,
Salman Naseer,
Umer Ijaz,
Yanal S. Faouri,
Adnan Ghaffar,
Mousa Hussein
Affiliations
Sarosh Ahmad
Department of Electrical Engineering and Technology, Government College University Faisalabad (GCUF), 38000, Faisalabad, Pakistan; Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain; Corresponding author.
This article presents a compact size circularly polarized substrate integrated waveguide (SIW) based wideband antenna array that serves industrial, scientific, and medical (ISM) band applications. A coplanar waveguide (CPW) technique is used to ensure the antenna size compactness. The proposed antenna is fabricated on a low-profile Rogers RT6002 substrate with a dielectric constant of 2.94, tanδ of 0.0012 and an approximate height of 0.76mm. The proposed design covers the frequency range from 2.15 GHz to 3.63 GHz (60.4%) while the axial ratio has a 3 dB bandwidth covering from 2.19 GHz to 2.51 GHz (13%) at the operating band of 2.45 GHz. The antenna is miniaturized and has a size of about 46.50 × 29 × 0.76 mm3. The simulation and experimental results are taken into consideration and there is a good promise between them. Hence, the antenna is a suitable applicant to be utilized for the applications in the ISM band.
