Dual-Band Hybrid Antenna Structure With Spatial Diversity for DTV and WLAN Applications

This communication presents the design of a dual-band hybrid antenna for digital television (DTV) and wireless local area network (WLAN) applications. Radiations are produced with spatial diversity for WLAN applications to realize multiple-input-multiple-output functionality and omnidirectional coverage. The structure embeds two slots into an ultrawideband monopole body for high- and low-frequency operations, which are excited by three ports of DTV and WLAN. The resultant frequency bandwidth covers most of the global DTV frequencies and the free WLAN band at 2.45 GHz. The radiations exhibit omnidirectional patterns for all three cases. Numerical and measurement results are presented to demonstrate the characteristics of radiation.