Design and Analysis of a Dual-Band Miniaturized Rectangular Patch Antenna for Millimeter-Wave Applications
Md. Omar Faruk Noman, Arif Istiaque, Md. Azad Hossain
Abstract
In this work, a miniaturized, dual-band rectangular patch antenna for 5G millimeter-wave applications is introduced. It employs a slotted patch structure mounted on a FR-4 substrate with thickness of 0.8mm to achieve dual frequency characteristics. The antenna has a simple architecture and an overall dimension of 8 × 8 × 0.87 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> which is significantly smaller compared to other traditional patch antennas. The operating frequencies of antenna are 30.65 GHz and 38.75 GHz respectively which falls inside the range used by the 5G network. The antenna has been modelled and simulated in CST microwave studio. Proposed structure shows excellent results with S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> -parameters of -37.0 dB and -56.84 dB and bandwidths of 2.32 GHz and 3.5 GHz at the operating frequencies respectively. The antenna exhibits a highly directional far-field pattern with directivity of 5.33 dBi and 7.62 dBi at 30.65 GHz and 38.75 GHz. Proposed antenna is able to achieve excellent performance while maintaining a compact form factor, thus making it more efficient to utilize in 5G wireless and cellular systems to meet the requirements of IR4.