A Miniaturized Printed Circuit CRLH Antenna-based Hilbert Metamaterial Array

Abstract

With the development of communication systems and antennas, various challenges arise that require antennas of small size with enhanced performance. Metamaterials (MTM) defects introduced a considerable solution to such a challenge. Therefore, in this paper, a lightweight with low profile antenna is designed based on a novel design of a Composite Right/Left-Handed CRLH-MTM Hilbert array. The proposed CRLH-MTM unit cell consists of a T-symmetric CRLH unit cell conjugated to the 3rdorder Hilbert on the ground plane through a T-stub structure to enhance the gain-bandwidth product. CST-MWS is used to stimulate and design the proposed antenna structure. The antenna parameters are optimized to evaluate the antenna performance in gain and S11. As a result, the antenna can operate forward and backwards with a large scanning angle ranging from +34 o to -134 o with changing frequency, and dual-band extended from 3.3GHz to 4.2GHz 4.86GHz 5.98GHz with a maximum gain of 7.24dBi and 3.74dBi, respectively. The beam steering is achieved by trough controlling the switching operation of PIN diodes. As a result, the antenna can scan up to 8° from 34° to 42° at 3.5GHz with constant gain along with the operating range.

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

“…The work of [33] considers the issues of a printed reconfigurable asymmetric antenna based on new metamaterial structures for 5 G applications, [34] proposes a scheme of a metamaterial patch antenna with circular polarization for modern applications, and analysis of an innovative fractal asymmetric antenna is carried out in [35]. For MIMO state-of-the-art 5 G applications, [36] considers the optical remote control of a miniaturized self-powered 3D reconfigurable MIMO antenna array printed on CRLH for 5 G applications, [37] simulates a miniature reconfigurable MIMO antenna array with optical remote control, printed on a CRLH 3D printer for 5 G applications, and in [38], simulations of a miniature printed circuit of a Hilbert metamaterial grating based on a CRLH antenna were carried out.…”

“…As can be seen from the works [33–38], the issues of analysis and synthesis of a digital antenna array with 32 × 32 elements have not been carried out simultaneously. Therefore, the scientific results obtained in the proposed work differ from the results obtained in the works [33–38].…”

Steerable composite right–left‐hand‐based printed antenna circuitry for 5G applications

“…Such property nominated this antenna to suit the applications of smart wireless communication systems. It is good to mention that the main benefit of using the meander line based on Hilbert geometry is reduce the antenna size within a limited substrate size trough increasing the surface current path on the antenna patch 13 …”

Reconfigurable CRLH‐inspired antenna based on Hilbert curve EBG structure for modern wireless systems

“…Such a combination realizes a LH branch printed circuit; however, the effects of the parasitic conductors could realize the RH branch that limits the desired antenna performances 9 . Therefore, to improve the antenna performance, a third‐order Hilbert curve structure, see Figure 1D, is etched on the back surface of the substrate to magnify the magnetic field impinging that increases the current displacement concentration toward the CRLH unit cell 10 . In addition, the proposed design is excited with an asymmetrical coplanar wave feed structure to suppress the back‐surface wave retardation though introducing a self‐reflection effect by a half‐circle matching circuit.…”