Title :
Unidirectional uwb array antenna using leaf-shaped bowtie elements and flat reflector
Author :
Ito, Y. ; Ameya, M. ; Yamamoto, M. ; Nojima, T.
Author_Institution :
Hokkaido Univ., Sapporo
Abstract :
A study of a UWB array antenna is presented, which is composed of leaf-shaped bowtie radiating elements printed on a dielectric substrate. With the use of a flat reflector, the presented antenna has unidirectional radiation characteristics and higher directivity in comparison with omnidirectional UWB antennas. In the maximum radiation direction of the proposed antenna, the actual gain of 10.3-13.3 dBi is achieved over the frequency range of 4.1-10.0 GHz (-3 dB gain bandwidth of 91%).
Keywords :
antenna radiation patterns; broadband antennas; directive antennas; microwave antenna arrays; Unidirectional UWB array antenna; antenna radiation direction; flat reflector; frequency 4.1 GHz to 10 GHz; gain 10.3 dB to 13.3 dB; leaf-shaped bowtie radiating elements; omnidirectional UWB antennas; unidirectional radiation characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20082741
