Compact, wideband‐printed quasi‐Yagi antenna using spiral metamaterial resonators

Abstract

A novel structure for size reduction and bandwidth enhancement of quasi-Yagi antenna using spiral resonator (SR) metamaterials is presented. The basic resonance is produced through excitation of simple quasi-Yagi antenna elements through a microstrip feedline while parasitic SR metamaterials augment bandwidth. The antenna is designed on an glass-reinforced epoxy laminate sheets (FR4) substrate with a dielectric constant of 4.4 and a thickness of 1.6 mm. Compared to original printed quasi-Yagi antennas, the size of the proposed quasi-Yagi antenna is reduced by ∼53%. Simulation results show that the proposed antenna has the impedance characteristics with a frequency bandwidth of 1.43-3.97 GHz (94%) for return loss more than 10 dB and a gain of 3.4-5.2 dBi in the corresponding frequency range. The designed antenna presents an end-fire radiation with a front-to-back ratio >10 dB. The antenna is fabricated, and measurement results demonstrate compactness and wide bandwidth of the antenna.

Reconfigurable metamaterial structure for 5G beam tilting antenna applications

“…MTMs A c c e p t e d M a n u s c r i p t are artificially engineered materials with electromagnetic characteristics not found in nature. These human-made materials are commonly used in antenna design to enhance the gain, bandwidth, and efficiency and recently to tilt the radiation beam [12][13][14]. In [15], SRR and H-shape were combined in a one-unit cell and used as an array to tilt the radiation beam of a horn antenna by an angle of +10°.…”

Compact dual‐wideband multi‐mode printed quasi‐Yagi antenna with dual‐driven elements

“…Several methods have been proposed to miniaturise the size of conventional Yagi antennas and these are often referred to as quasi-Yagi antennas. They can be summarised as shrinking the dipole size with a meandering technique [7], by applying a stepped slot to reflector, which is shorter than the driven element [8], by adding the electrical length of the Yagi antenna with inductance elements [9], by designing an radiator with arc-shaped on a flexible substrate [10], by representing the folded dipole with a pseudo monopole antenna as a driven element [11], by adding lengthened strip line to the ground plane [12], and by adding a parasitic resonant element [13,14]. However, the dimension of the antenna is basically minimised at the expense of bandwidth.…”

A wideband millimeter‐wave antenna based on quasi‐Yagi antenna with MIMO circular array antenna beamforming for 5G wireless networks

“…On the other side, they have large‐profile. Various designs of these antennas have been established for array antennas like printed and angled‐dipole dipoles, quasi‐Yagi antennas . Microstrip planar antenna can be an appropriate structure for the 5G mobile antenna and array antenna base station due to its aforementioned advantages …”

“…Various designs of these antennas have been established for array antennas like printed and angled-dipole dipoles, quasi-Yagi antennas. 6 Microstrip planar antenna can be an appropriate structure for the 5G mobile antenna and array antenna base station due to its aforementioned advantages. 7 In this effort, a wideband quasi-Yagi antenna is proposed to operate at 5G MMW bands of 27-28 and 37-39 GHz fed by a microstrip-to-slotline.…”