• Toshika Chand
• Saurabh Singh
• Sudhanshu Verma

This paper aims to present a dual band dual polarized rhombic slot antenna (RSA) for ISM band applications. The proposed antenna of size 60×60×1.6 mm3, consist of a rhombic slot with a pair of L shaped slits etched at two of its opposite arms and a rectangle etched at two of its corners. Two ports are placed perpendicular to each other. Both the ports are excited by a 50-Ω microstrip line due to which the impedance bandwidth (BW) of proposed antenna is enhanced and radiated with horizontal and vertical polarizations. The proposed rhombic slot antenna achieved a dual band 10 dB return loss bandwidth of |S11| 23.4% (1.96-2.48 GHz) and 36.4% (4.09-5.91 GHz) and for |S22| 30% (1.96-2.64 GHz) and 36.5% (4.8-6.95 GHz) respectively. Hence both the ports can operate in 2.45 GHz and 5.8 GHz ISM band applications, with isolation greater than 20 dB in the entire band and achieved a peak realized gain of 3.6 dBi in lower band and 5.6 dBi in higher band. The simulated results of proposed antenna show good radiation characteristics for ISM band applications.

Dual Band, Dual Polarized Antenna, Rhombic Slot Antenna, Isolation, ISM band

"Dual band Dual Polarized Rhombic Slot Antenna for ISM Band Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.b119-b125, June-2021, Available :http://www.jetir.org/papers/JETIR2106160.pdf

"Dual band Dual Polarized Rhombic Slot Antenna for ISM Band Applications", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppb119-b125, June-2021, Available at : http://www.jetir.org/papers/JETIR2106160.pdf