Broadband Characteristics of a Planar Folded Dipole Antenna with a Feed Line

A simple printed antenna with broadband property and omnidirectional radiation patterns of wire dipole

“…The diversification of smart wireless devices in recent years has been the strongest motivation for the rapid development of various studies on printed antennas [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37]. Generally, these antennas can be categorized by the authors into several types such as patches [10,11,12], monopoles [13,14,15,16,17,18,19,20], or dipoles [21,22,…”

“…On the other hand, when dealing with these antennas, designers may be possible to obtain dual polarization [4,5,35], low cross polarization [13,26], or a desired radiation pattern [20,36], but in most works as listed in References, designers often try to increase the antenna's resonant bandwidth by adjusting the shapes of conductor parts on the substrate. Concerning the type of printed dipole antennas [21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37], although antenna models in these works can provide impressive bandwidth enhancement, other features of some of them may disappear or be unsuitable in 1 Dept. of Radar Technology, Le Quy Don Technical University, 236 Hoang Quoc Viet, Hanoi, Vietnam 2 Dept.…”

Broadband asymmetric folded dipole antenna for LTE base station

“…To reduce the cost and to have low profile geometry, planar printed antennas have gained more attention among the research community [6][7][8][9]. In [6], a planar folded dipole antenna was proposed. Using a A/ 4 feed line, broad impedance bandwidth of 35 % (0.75 -I.OS GHz) for Sl1 < -10 dB was obtained.…”

“…In [9], a three segment microstripline feed with combined asymmetric folded dipole was reported. It achieves a The antennas presented in [6][7][8][9] have broad impedance bandwidth but all measured at -10 dB. In this paper, a hook shaped microstrip line along with coplanar asymmetric folded dipoles is presented.…”

Fundamental characteristics of a strip folded dipole antenna with a feed line having a hemispherical structure

“…Therefore, the broadband antenna for handset is required. In our paper [1], [2], the strip folded dipole antenna (SFDA) with a feed line has been introduced and its characteristic has been analyzed in a free space or on the dielectric substrate. SFDA has a broadband characteristic and the feed line of a SFDA works impedance transformer.…”