Internal Dual-band Low Profile Antenna for T-DMB/UHF Mobile Handset Applications

A novel low profile and dual-band antenna for the frequency band of T-DMB (terrestrial digital multimedia broadcasting) and UHF (ultra high frequency) applications are presented. By folding an inverted-L antenna with open stubs, the low profile and dual band property are achieved. To operate over T-DMB (180-210 MHz) and UHF (470-810 MHz) frequency bands, the impedance matching with two open stubs is used for the proposed antenna. Radiation patterns are omni-directional for all frequency bands. Details of the proposed antenna as well as the measured results are presented