Title :
A wideband double dipole quasi-Yagi antenna using a microstrip-slotline transition feed
Author :
Ta, Son Xuat ; Han, Jea Jin ; Choo, Hosung ; Park, Ikmo
Author_Institution :
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon, South Korea
Abstract :
This paper describes a wideband double dipole quasi-Yagi antenna fed by a microstrip-to-slotline transition. The transition feed consists of a microstrip radial stub and a slot radial stub, each with the same angle of 90°, but with different radii to achieve wideband impedance matching. Double dipoles with different lengths are utilized as primary radiation elements to enhance bandwidth and achieve stable radiation patterns. The antenna has a bandwidth of 3.65-8.90 GHz for a -10 dB reflection coefficient, and a flat gain of 6.4-7.6 dB across the bandwidth. The proposed antenna could be widely applicable to wideband wireless communication systems due to wideband characteristics, planar structure, and stable radiation pattern.
Keywords :
Yagi antenna arrays; antenna radiation patterns; broadband antennas; dipole antenna arrays; impedance matching; microstrip antenna arrays; bandwidth 3.65 GHz to 8.90 GHz; microstrip radial stub; microstrip-slotline transition feed; microstrip-to-slotline transition; planar structure; radiation elements; slot radial stub; stable radiation patterns; wideband characteristics; wideband double dipole quasi-Yagi antenna; wideband impedance matching; wideband wireless communication systems; Antenna radiation patterns; Broadband antennas; Dipole antennas; Microstrip; Microstrip antennas; Wideband;
Conference_Titel :
Antenna Technology (iWAT), 2012 IEEE International Workshop on
Conference_Location :
Tucson, AZ
Print_ISBN :
978-1-4673-0036-0
DOI :
10.1109/IWAT.2012.6178404
