Title :
Tapered Slot Antenna With Band-Notched Function for Ultrawideband Radios
Author :
Lee, Dae-Heon ; Yang, Hae-Yong ; Cho, Young-Ki
Author_Institution :
Attached Inst. of Electron. & Telecommun. Res. Inst., Daejeon, South Korea
fDate :
7/4/1905 12:00:00 AM
Abstract :
A novel tapered slot antenna (TSA) with a band-notched function for ultrawideband (UWB) radios is proposed in this letter. By inserting an Archimedean spiral-shaped slot into a microstrip open-circuit circular stub of microstrip-slotline transition, a UWB operation with a notched frequency band can be obtained. Measured data for the optimized case show the bandwidth for the VSWR <; 2 to be 8.8 GHz (from 2.4 to 11.2 GHz) with a notched band frequency from 4.6 to 6.2 GHz. By inserting the resonance slot on the nonradiating part of the antenna, the proposed antenna is capable of avoiding the spatial-dependent bandstop characteristics. Also, the designed antenna has a small size of 50 × 50 mm2, which is a size reduction of 40% with respect to previous similar antennas.
Keywords :
microstrip antennas; microwave antennas; slot antennas; ultra wideband antennas; ultra wideband communication; Archimedean spiral-shaped slot; TSA; UWB operation; UWB radios; VSWR; band-notched function; frequency 2.4 GHz to 11.2 GHz; microstrip open-circuit circular stub; microstrip-slotline transition; notched frequency; spatial-dependent bandstop characteristics; tapered slot antenna; ultrawideband radios; Antenna measurements; Antenna radiation patterns; Frequency measurement; Slot antennas; Ultra wideband antennas; Band-notch function; half-wavelength slot; tapered slot antenna (TSA); ultrawideband (UWB) antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2204718
