In this article, investigation has been carried out on Y‐shaped patch antenna to produce triple‐band for wireless applications. The corrugated Y‐shaped patch antenna is considered to produce low reflection coefficient with high gain at the triple‐bands. The corrugated Y‐shaped patch antenna is resonates at 4.19 GHz (4‐4.43 GHz), 8.79 GHz (8.61‐9.01 GHz), 13 GHz (12.6‐13.6 GHz) frequencies with reflection coefficient of −29.26 dB, −34.87 dB, −40.37 dB and gain 5.01 dBi, 5.42 dBi, 7.46 dBi, respectively. The proposed corrugated Y‐shaped patch antenna works three frequency bands at radio communications, satellite communications, and aeronautical radio navigation applications, respectively.

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Antenna operating in multiple frequency bands has driven the demand of antennas. The design of Quad band microstrip patch antenna to attain multiband with improved gain is described in this paper. Several slits and slots are introduced in the design process to allow a sole antenna to operate in multiple bands. FR-4 Epoxy is used as a substrate material due to its low cost and effectiveness than other substrates. The antenna is built and corresponding geometry is simulated in high frequency structure simulator (HFSS) tool which is based on finite element method (FEM). The operating frequencies of the proposed antenna are 1.8089 GHz (1.46-2.24GHz), 4.64 GHz (4.57-4.71GHz), 5.3867 GHz (5.29-5.44GHz) & 12.9778 GHz (11.36-15.3GHz) with a reflection coefficients observed -15.59dB, -16.55dB, -33.15dB, -25.07dB respectively. Wide bandwidths 0.7767GHz and 1.4GHz are observed for primary and quad bands, narrow bandwidths are observed for second and third resonant bands. The gains are observed as 14.97 dBi, 3.81 dBi, 4.48 dBi, 3.92dBi for the respective operating frequencies. The radiation characteristics are observed semi -omni directional and omni-directional for the resonant bands. This antenna can be used in satellite radio, aircraft surveillance and some radar applications.

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