The objective of the effort is to design a compact Bluetooth/UWB antenna design with 5GHz WLAN notchi function.
Among short-range wireless communication systems, Ultra-wideband (UWB) technology, with a frequency allocation of 3.1-10.6 GHz, has gained a lot of popularity from researchers and the wireless industry alike due to the high data transfer rate (110-200 Mb/s) and low power consumption. However, since UWB covers the frequency spectrum of Wireless Local Area Network (WLAN) operating at 5.2 GHz (5150-5350 MHz) and 5.8 GHz (5725-5825MHz), a frequency notched function in the UWB antenna design is greatly desirable to avoid interferences from WLAN. Since 2002, various antenna structures and methods to notch a specific frequency band have been introduced. Moreover, a planar integrated antenna working on both Bluetooth and UWB has been recently introduced for systems operating in those two communication systems.
(1) UWB antenna design
(2) 5GHz frequency notch function
(3) Integrate Bluetooth antenna