Fabrication and Analysis of a Triple Band Patch Antenna: Fabrication and Analysis of a Triple Band Patch Antenna

Gulzar  Ahmad; Asif  Sultan; M. Inayatullah  Khan Babar; Majid  Ashraf; Tariqullah  Jan

Authors

Gulzar Ahmad Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan
Asif Sultan Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan
M. Inayatullah Khan Babar Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan
Majid Ashraf Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan
Tariqullah Jan Department of Electrical Engineering, University of Engineering and Technology, Peshawar, Pakistan

Keywords:

: Vector Network Analyzer, FR-4, Microstrip Line Feed, Triple Band, Patch Antenna

Abstract

The paper presents the design and fabrication of a patch antenna of hexagonal shape on FR-4 lossy substrate of 1.6mm thickness. To achieve multi bands an inverted C-Shaped cut was etched in the patch. The antenna has over all dimensions of 61×48×1.6mm3. Microstrip line feed has been used for the excitation purpose of the antenna. Measurements of Return Loss (RL), Voltage Standing Wave Ratio (VSWR) and Input Impedance were taken using Vector Network Analyzer (VNA) of Rohde & Schwarz Company. The antenna offered three bands with resonant frequencies of 3.36GHz, 4.06GHz and 7.01GHz lying in S and C bands. The -10dB bandwidths achieved are 60MHz (3.340GHz-3.400GHz), 76MHz (4.033GHz-4.109GHz) and 754MHz (6.391GHz-7.145GHz) with corresponding return losses of 20.23dB, 16.30dB and 25.24dB respectively. VSWR of the antenna for all the above mentioned three bands remains below 2. The antenna can be used for different military and commercial applications in S and C bands.

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Fabrication and Analysis of a Triple Band Patch Antenna