A multiband element antenna (120) used in combination with a unique metal
chassis design that enhances antenna performance and that enables the
design of a compact and efficient antenna system. A cellular flip phone
(100) that has a conductive chassis includes a flip up antenna (120) that
pivots between an extended and a retracted position. The antenna (120)
pivots at a point that is located on one edge of the top of the cell
phone body (102). The conductive chassis of the flip cover (104) is
grounded to the flip phone body (102) at a single point or single surface
that is substantially opposite the antenna RF feed (122). Conductive
surfaces of the cellular flip phone body (102) are grounded at a single
point that is near the antenna RF feed point (122). This grounding
arrangement has been found to control the flow of induced currents on the
conductive portions of the flip cover (104) and body (102), thereby
improving the performance of the device's antenna (120).