Analysis of a Miniaturized Modified Multifrequency Printed Antenna with Broadband Characteristics for WLAN Application

Abstract

In this article, a compact rectangular microstrip patch antenna with coaxial probe feed is presented for WLAN and HiperLAN wireless applications. The proposed microstrip patch antenna with multiple slots offers multiresonant frequency bands for different applications. The proposed antenna is very simple in structure and occupies 192 mm2 (16 mm × 12 mm) in size. The antenna is constructed with an FR4 substrate. The designed antenna offers size reduction, multiple resonating frequencies, and broadband characteristics by modifying the patch. The size of the proposed antenna has been reduced by 60.55% as compared to the conventional rectangular patch antenna. The proposed antenna resonates at multiple frequencies such as 3.62 GHz, 5.79 GHz, and 6.36 GHz. The proposed antenna at multiple resonant frequencies offers low VSWR, good adaptation, considerable gain, and stable broadside radiation patterns. The proposed antenna configuration has been designed and analyzed by MOM-based EM simulator IE3D.