A printed UWB antenna using embedded slits for 3.5/5.5 GHz band notching

摘要

This paper presents a printed UWB antenna with notched bands. To reduce the EMI at 3.5 and 5.5 GHz, two invert L-shaped narrow slits embedded into both ground planes and modified U-shaped narrow slit embedded into radiating patch are applied for band notching of those bands, respectively. The proposed antenna provides operating frequency ranges of 3.1-3.3 GHz, 3.8-5.2 GHz and 5.9-12 GHz. Nearly omni-directional and bi-directional radiation patterns in H and E-planes are given, respectively. Therefore, this antenna is suitable to use for general UWB communication systems with the EMI reduction at 3.5 and 5.5 GHz.