This paper proposes a new type of double flower shaped DGS structure which when etched on the metallic ground plane of a simple microstrip line gives low-pass filter characteristics. This is due to the metamaterial behaviour of the DGS. The frequency characteristics of the DGS are investigated by simulating the structure in Mom based IE3D simulator. The effective parameters of the metamaterial ...

We propose in this paper the design, realization and experimental characterization of a low-profile metamaterial “bent” monopole antenna with a total height of 0.027λ0 and a fractional bandwidth of 24.4% around 1.3GHz. The metamaterial (MTM) structure is a dual-layer mushroom-like electromagnetic band gap (DLEBG) conceived and optimized to improve the antenna’s operating bandwidth. Moreover, a ...

In this paper, we propose a metamaterial (MTM)-based low-profile wideband antenna and its array using substrate integrated cavity (SIC) feed structure for 5G wireless cellular networks. The proposed consists of two sets square mushroom-like arrays; semi-ground plane microstrip line-fed bow-tie radiator. Due to the unique in-phase reflection characteristic metamaterial, performance is maintained...

In this paper, a unique negative refractive index-metamaterial (NRI-MTM) structure is proposed for traffic alert and collision avoidance system (TCAS) aircraft application. The NRI-MTM unit-cell combination of square circular split ring structures. metamaterial (SCM) designed on the top 1.6 mm thick FR-4 substrate, with single bottom substrate. total dimension SCM 23 × 23mm <sup xmlns:mml="http...

Metamaterials, which are called as left-handed materials, exhibit electromagnetic properties that do not exist in nature, such negative refractive index and reverse Doppler effect, at the frequency range for they designed. These unique of metamaterials have made them indispensable a wide variety applications sensor applications, signal absorption, antenna, energy harvesting. In this study, desi...

An approach for enhancing the operating bandwidth of classic dual-band power divider (PD) is proposed by using metamaterial (MTM) units. To overcome limitation EM simulation and improve design efficiency, we propose an artificial neural network (ANN) that enables inverse prediction MTM-PD geometry from its desired physical response. In ANN approach, convolutional long short-term memory are comb...

This is a review paper in which electrically small metamaterial-based antennas are discussed from the industrial point of view using mobile phones as the application example and dual band microstrip antenna with metamaterial structure for dual band operation. The most interesting feature of the design is the ability of enhancing the gain and total efficiency of the antenna without affecting the...

This work builds a metamaterial (MTM) superstrate loaded on patch of microstrip antenna for wireless communications. The MTM is made up four G-shaped resonators FR-4 substrate with relative permittivity 4.4 and has total area (8×16) mm2, higher than the patch. increases gain while also raising input reflection coefficient. When it 9 mm above patch, increased from 3.28 dB to 6.02 dB, when 7 coef...

Recently, various structures such as zeroth order antennas, dual band branch line couplers, compact ring hybrids, broadband baluns, and so on, have been introduced by using metamaterial transmission lines (MTM TLs) of the composite right/left handed (CRLH) or the LC loaded (LCL) lines [1-2]. In general, most of passive circuits in RF/microwave systems are designed by using -90 or -180 phase s...

Metamaterial leaky wave antennas (MTM-LWAs), one kind of frequency scanning antennas, exhibit frequency-space mapping characteristics that can be utilized to obtain a sufficient field of view (FOV) and reconstruct shapes in both remote sensing and microwave imaging. In this article, we utilize MTM-LWAs to conduct a spectrally encoded three-dimensional (3D) microwave tomography and remote sensin...