Enhanced bandwidth PIFA antennas for 900/1800 MHz and WiFi 2400 MHz band with a dielectric cover

Abstract

This paper is dedicated to the development of PIFA antennas with a dielectric cover for different frequency bands. A PIFA antenna on FR-4 with ∊ = 4.4 and thickness h = 2 mm was simulated, manufactured and tested for use with the GSM 900/1800 MHz transceiver. On the same substrate, an antenna for Wi-Fi (2.4 GHz) was designed. For antennas, regions of 65 by 10 and 45 by 10 millimeters respectively were allocated. The antennas have a double-layered cover made of polyethylene and polyurethane with dielectric constants of 1.2 to 1.5 and 6 to 8 respectively.