Dual-spiral line loaded monopole antenna for quadband applications
This paper presents the dual-spiral strip line-loaded monopole antenna for multiband applications was presented. The antenna occupies a volume of 37 times 12 times 7 mm3 and supports a dual wide band covering Cellular, PCS, UMTS, and IMT-2000 bands. Considering its small size, dual wide bandwidth, and monopole-like radiation patterns, the proposed antenna is very suitable as an internal multiband antenna for mobile phone applications.