A planar-printed E-shaped omnidirectional magneto-electric dipole antenna for WWAN/LTE applications

Abstract

A planar‐printed E‐shaped dual‐wideband magneto‐electric (ME) dipole antenna for WWAN/LTE applications is proposed. Through changing the surface‐current distributions, an E‐shaped electric‐dipole structure is used to provide a dual‐wideband. Besides, to reduce the size of the antenna and improve impedance matching, a novel feeding structure designed with inverted U‐shaped tapered line and meandering L‐shaped line is introduced. Finally, without conventional vertical ground planes, a small‐size one is printed on the back side of the substrate to attain stable gains and omnidirectional radiation patterns. The antenna prototype can attain a bandwidth of 31.6% (0.80–1.10 GHz) with a stable gain of 3.1 ± 0.5 dBi for the lower band, and a bandwidth of 47.5% (1.67–2.71 GHz) with a gain of 3.9 ± 0.7 dBi for the upper band, covering the frequency bands for WWAN/LTE systems. In comparison with the existing ME dipole antennas, the proposed antenna can be easily fabricated at low cost which makes it suitable for WWAN/LTE applications. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1734–1739, 2014

Design of CPW Antenna for Future Wireless Application

“…The frequency bands in the range from 1.71 to 2.69 GHz were referred for LTE communication. For LTE communication, the antenna should hold the following properties such as impedance bandwidth, stable gain and omnidirectional radiation pattern [4]. The antenna design for mm wave range was discussed [13].…”

A wideband antenna using metasurface for the 2G/3G/LTE/5G communications

“…3 Among the numerous antennas, the magneto-electric (ME) dipole antenna, which owns the outstanding advantages such as wide impedance bandwidth, stable gain, good frontto-back ratio (FBR) and low cross-polarization, and so on, is one of the most competitive candidates. 4,5 However, one of the obvious drawbacks of the previous ME dipole antennas is the bulky structure with high profile >0.25 λ c 6 (where λ c is the free-space wavelength at the center frequency). The technology of antenna printed on the multi-layer substrate is one of the most effective ways to obtain low profile feature.…”

A Simple Dual-Wideband Magneto-Electric Dipole Directional Antenna

“…Different kinds of dual-band directional antennas are proposed in [7][8][9][10]. The antenna proposed in [7] consists of a pair of printed dipoles for the lower frequency band and two pairs of dipoles for the higher frequency band.…”

“…Different types of ME dipole antennas were proposed in [6][7][8][9][10][11][12][13][14][15]. As discussed in [6][7][8][9][10][11][12][13][14][15], ME antennas have outstanding radiation and impedance bandwidth performance. A dual-band directional antenna is presented in [8], and the antenna consists of an irregular shorted patch and three planar dipoles.…”

“…Two additional smaller planar dipoles are placed and connected to the irregular short patch for achieving another wideband performance in the higher frequency band (1.58 ∼ 2.62 GHz). A dual-wideband double-layer ME dipole antenna with a modified horned reflector was proposed in [9]. A double-layer folded electric dipole structure with a certain inclination is utilized to provide wideband nature by changing the current distribution.…”