A internal penta-band monopole with a parasitic strip for GSM850/GSM/900/DCS/PCS/UMTS operations

Abstract

A penta-band internal monopole antenna with a novel parasitic strip suitable for GSM850/GSM900/DCS/PCS/UMTS2100 applications is constructed and studied. The proposed antenna is located at the bottom of the edge of the ground plane in main printed circuit board (PCB). It has antenna matching network and one parasitic strip using the new conception of the parasitic mode and second mode. It is an internal penta-band antenna suitable for most Asia, American and European 2G/3G handheld devices. The simulated impedance bandwidth covers the required

An internal Quad-band monopole with Isolation Area for CTIA 3.0 Talk Mode

“…Several antenna structures might be suitable for multi-band operation such as PIFA (Planar Invited-F Antenna) [2], internal monopole antenna with parasitic strip [3] and external helix antenna. Compared with conventional PIFA, monopole prevails in ultra thin phones for its very low profile structure, better bandwidth and good efficiency but monopole is sensitive to the varied boundary around the radiator and groundplane.…”