Dual-Wideband Complementary Antenna With a Dual-Layer Cross-ME-Dipole Structure for 2G/3G/LTE/WLAN Applications

Abstract

A novel dual-wideband complementary patch antenna with a dual-layer cross-magneto-electric (ME)-dipole structure is proposed for 2G/3G/LTE/WLAN applications. In order to provide dual-wideband and complementary characteristics, an inverted U-shaped feeding structure is introduced to feed dual-layer cross-ME-dipole patches. The upper-layer cross-ME-dipole patches mainly serve the upper frequency band, while the lower-layer ones chiefly work for the lower frequency band. In addition, hook-shaped patches are placed on the corner of upper-layer electric dipoles to broaden the impedance bandwidth of the upper frequency band. Moreover, a box-shaped reflector is employed to attain high and stable gain. The prototype antenna can offer an impedance bandwidth of 51.3% (1.68-2.84 GHz) with a stable gain of dBi, and an impedance bandwidth of 11.4% (5.31-5.95 GHz) with a gain of dBi for the lower and upper bands, respectively. Hence, it can be suitable for 2G/3G/LTE/WLAN base-station communications.Index Terms-Complementary antenna, cross-magneto-electric (ME)-dipole, dual-layer structure, dual-wideband antenna.

A Multiband antenna using plus‐shaped fractal‐like elements and stepped ground plane

“…Also good impedance match and stable radiation patterns in the band of the interest are the basic desired characteristics of the multiband and wideband antennas. Many techniques have been extensively investigated to obtain multiband characteristics by employing radiators on the patch such as square, circular, triangular, hook‐shaped, bow‐tie patch, Y‐shaped patch, fork‐shaped radiator, or metamaterial inspired antenna . Fractal structures also can be a good candidate for designing multiband antenna as they offer scaling and self‐similarity properties and eventually help in miniaturization with multiband characteristics.…”

“…Fractal antenna geometries recently in use are Moore-shaped fractal, Apollonius circle fractal, Moore-Koch Hybrid Fractal Antenna (MKHFA), and H-shaped fractal. [9][10][11][12] In spite of many advantages, these antennas suffer from some serious drawbacks, such as large antenna dimensions, 1,[4][5][6]12 requirement of high-cost substrate materials, 5,6,10 complex structure, 5,10 or very narrow bandwidth. 2,3,[6][7][8][9]11,12 Thus, there have been considerable efforts made by researchers in designing compact, low-cost, simple, and multiband antenna.…”

A Novel Wideband Dual-Band Dual-Polarized Magneto-Electric Dipole Antenna

“…In recent years, several dual-polarized antennas with good performances were designed based on slot antennas [3,4] and dipole antennas [5,6]. Several studies have been focused on the development of dualband antenna elements [7][8][9][10][11][12][13][14][15][16]. To realize multiple bands, the most general method in the patch antenna is to etch various slots on the radiation patch or ground plane.…”

Low-Profile Broadband Dual-Polarized Dipole Antenna on Amc Reflector for Base Station

“…The microstrip patch antennas [1][2][3] have a low-profile characteristic, but their application in the base station is restricted because of their narrow bandwidth and big loss. The dipole antennas [4][5][6] can always be designed reasonably to meet the current mobile communication requirements of bandwidth. In [7], the antenna utilizes two crossed planar bow-tie dipoles to achieve ±45 • dual polarizations, which has an impedance bandwidth of 45% for VSWR < 1.5, and the isolation between the two ports is more than 30 dB.…”