Dual-band printed antenna for mobile telephone applications

Hidden antennas for vehicles

“…This section describes advances made on telephone antennas, presenting two dual band designs with a low profile operating at 900 and 1800MHz. The first is a wide bandwidth printed inverted F (PIFA) antenna [4,5] while the second is hybrid antenna based an antenna by Delavaud [6], both being designed to fit under plastic panels on a vehicle. The operating bands were initially for dual 900/1800MHz operation and more recently adding the UMTS band at 2GHz.…”

“…7 shows the geometry of a PIFA antenna designed to operate at the 900 and 1800 MHz telephone bands. The conductors have been cut away to provide a dual resonant frequency response with wide bandwidths [5]. This antenna was specifically designed as an emergency call antenna to be mounted in the bumper of a car.…”

Microstrip Patch Antenna With Skew-F Shaped DGS for Dual Band Operation

“…Several methods have been considered in the literature for dual band operation of the antennas [3][4][5][6][7][8][9][10][11][12][13]. A new approach using the defect in the ground plane of microstrip antenna has been presented in this work.…”

Single and Double Layer Planar Multiband PIFAs

“…This paper reports a new compact multiband PIFA which evolves from a dual band design described in [8] that covered the GSM and DCS bands and possessed dipole type radiation patterns.…”

“…A series of design innovations made to the original PIFA of [8] will be reported. In all cases Zeland's IE3D software was used to theoretically study and optimize the design of these new antennas.…”