Design of a Ka-band Micro Strip Printed Antenna at 31 GHz for millimeter Wave Wireless Communication

In recent years, printed antennas operating at millimeter wave (mmW) frequencies have gained more popularity for next generation wireless communication systems to meet the need for faster data rate, massive bandwidth and large coverage area. This paper proposes the design of a Ka-band microstrip patch antenna resonating at 31GHz for mmW communication. The proposed antenna has a rectangular geometry with non-resonating rectangular slots at the edges and along the sides of the patch. Further, a Sierpinski fractal slot and a pair of chevron shaped slots are loaded to achieve better impedance matching and wide bandwidth. The overall dimension of the antenna is 7×6×0.508 mm 3 which is integrated on Rogers RT/Duroid 5880 substrate with ε <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</inf> = 2.2 and tan δ = 0.0009. The results reveal that the proposed design achieves wide bandwidth of 1.46 GHz (30.26−31.72 GHz) centered at 31GHz and exhibits total gain of 7.95dB. The performance of the antenna demonstrates its applicability for mmW communications.