期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2016
卷号：9
期号：10
页码：405-416
出版社：SERSC
摘要：Microstrip patch antennashave made great advancements inwirelesscommunication fieldin recent years. They have many advantages like light weight, low cost, smaller size, easy fabrication, high data rates, and capability to operate at multiband and wideband. They can be directly printed on a PCB and are gaining popularityin mobile phones. As the demand of operational bands increases, the designprocedure of microstrip antenna is becomingvery difficult. The microstrip antennamust be compact in size to employ them in miniaturized portable devices. Microstrip antenna comprise of rectangle, square, circle, triangle, donut,and dipoleshaped patches. This paper presents design and development of amicrostrippatch antenna for multiband wireless applications. The proposed geometry contains a substrate having rectangular radiating patch withsymmetricalE-shaped slots on one side and a ground plane on other side. The designed miniaturized antenna has dimensionsof 25 x 25 x 1.58mm. Theperformanceparameters-operating frequency, return loss (S11),and voltage standing wave ratio (VSWR) are computedfor the designed geometry.The fabricated antenna exhibits five frequency bandsfrom 6.166 to 10.500 GHz. The computed return loss values are -14.9, -10.7, -14.3, -13.5and -14.6 dB at frequencies 6.166, 6.833, 8.166, 9.500 and 10.500 GHz respectively. The observed VSWR values for the resonant frequency peaks are 1.43, 1.82, 1.48, 1.54 and 1.46 respectively. The values obtained for VSWR (between 1 and 2) and S11(below -10dB) are within recommended range for the desired frequency bands. FR4 substrate is used for the fabrication of the antenna having permittivity of 4.4. The performance parameters of fabricated antennageometry are computed using VNA tool.
