Compact Coplanar Waveguide (CPW)-Fed Zeroth-Order Resonant Antennas With Extended Bandwidth and High Efficiency on Vialess Single Layer

Abstract

ease of fabrication and good performance the proposed ZOR may find applications in wireless communication systems. IEEE Trans Microwave Theory Tech 61 (2013) 9. D.K. Upadhyay, S. Pal, An improved zeroth order resonator using left handed metamaterial, J Microwaves Optoelectron Electromag Appl 12 (2013), 131-140. 10. M.A. Abdalla and Z. Hu, Design and analysis of tunable left handed zeroth-order resonator on ferrite substrate, IEEE Trans Magn 44 (2008), 3095-3098. 11. C. Caloz and T. Itoh, Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications, 2nd ed., Wiley and IEEE Press, Hoboken, NJ, 2005 12. M.M. Mansour, M. El-Mala, A.-A.T. Shalaby, E.S.M. El-Rabaie, N.W. Messiha, CRLH ZOR metamaterial, design, simulation and fabrication. Guang-ming and L. lian-gang, Novel zeroth-order resonator antenna based on composite right/left handed (CRLH) transmission line, Cross Strait Quad RegionalABSTRACT: A printed microstrip line-fed fractal antenna is presented with a high fidelity factor for UWB applications. The antenna structure of electrical dimension 0.24 k 3 0.33 k at lower frequency 3.1 GHz is made of a fractal patch, a slotted partial ground plane, and a microstrip feed, which is fabricated on FR4 material of low cost and dielectric. Measured results demonstrates that the fractal antenna achieves fractional bandwidth of 117.88% covering the frequency range from 3.1 GHz to more than 12 GHz with a maximum gain 3.54 dBi at 6.25 GHz. An acceptable analogy is observed between measured and simulation results. The high fidelity factor, sharply surface current distribution, time domain performances, acceptable gain, and nearly omnidirectional radiation characteristic have validated the appropriateness of this proposed fractal antenna for UWB and microwave imaging applications.ABSRACT: A method has been proposed to increase the size of rectangular microstrip patch antenna (RMPA) for mm-wave and terahertz frequencies to increase the fabrication tolerance. The method is experimentally tested on a RMPA designed at 56 GHz frequency where both the simulation and measured results are in good agreement. Moreover, the antenna's overall performance is also improved.

A Compact CPW Fed CRR Loaded Four Element Metamaterial Array Antenna for Wireless Application

“…5(b). It can be observed that all the vectored electric field lines throughout the patch are perpendicular and in the same phase, hence ZOR [31]. Additionally Fig.…”

Meta-Loaded Circular Sector Patch Antenna

“…The CRLH-TL can also be used to design dual-band/multi-band antennas [13], circularly polarized antennas [18], and reconfigurable antennas [19], using their different resonant modes. Recently, the concept of CRLH TL has been introduced for coplanar waveguides (CPW) [20][21][22], and substrate integrated waveguides (SIW) [23,24], which results in features like wide bandwidth and high efficiency.…”

Design of a Compact Quad-Band Hybrid Antenna for Compass/Wimax/Wlan Applications

“…Recently, there has been a great effort on miniaturized [16][17][18], multi-band [19][20][21] or leaky-wave [22][23][24] antennas based on the concept of metamaterials. Nevertheless, from the authors' point of view, the multi-band and/or multifunction antennas based on combination of the metamaterials and monopole antenna have not been fully explored.…”