Affiliations: [a] National Key Laboratory of Antennas and Microwave
Technology, Xidian University, Xi'an, Shaanxi, China | [b] School of Physics and Optoelectronic Engineering,
Xidian University, Xi'an, Shaanxi, China
Correspondence:
[*]
Corresponding author: Zhi-Ya Zhang, National Key Laboratory of
Antennas and Microwave Technology, Xidian University, Xi'an 710071, Shaanxi,
China. E-mail: [email protected]
Abstract: The paper proposes a wideband bowtie antenna for indoor base station
applications. By using the inverted L-shaped coupling feed
structure, the impedance bandwidth of the lower band is improved; while using
the four tuning stubs, the upper band is enhanced. Thus, a wide impedance
bandwidth of about 77.8% (VSWR les; 2) ranging from 1.38 to 3.14 GHz is
obtained. In addition, by connecting two folded elements to the patches of the
bowtie dipole, the compact dimensions of the antenna can be achieved. It also
provides stable peak gain, unidirectional radiation patterns and low
cross-polarization over the whole operating band. Owing to these good
performances, the proposed antenna is very suitable for the recent indoor base
station wireless communication services such as 3G, WiFi, WiMax, Bluetooth and
LTE applications, etc.
