A wide band folded and bended internal loop antenna for mobile handsets

A novel folded and bended internal loop antenna (FABILA) with wide bandwidth for GPS and PCS bands is proposed and designed. This single-feed antenna incorporates two shorting pins to be small, compact, highly efficient, and low profile. By carefully choosing the type, substrate thickness, and position of antenna relative to other metallic objects on the printed circuit board, a wider impedance band (470 MHz) is achieved with minimum occupied volume, which fully covers the frequency range for the GPS and PCS bands. The proposed antenna has maximum gain of 3 dBi and average gain of -2 dBi.