@article {273,
	title = {Scanning-beam antenna on metamaterials coplanar structure for wireless applications},
	journal = {Journal of Digital Information Management},
	volume = {9},
	year = {2011},
	note = {Export Date: 10 July 2014},
	month = {2011},
	pages = {111 - 116},
	abstract = {A scanning-beam antenna on metamaterial coplanar structures is presented. The proposed antenna is, in essence, a composite of Right/Left-Handed (CRLH) coplanar waveguide (CPW) structure incorporating distributed periodic structures with L-C high-pass filter topology which support left-handed (LH) waves. The negative refractive index (NRI) properties of these structures are shown theoretically, numerically and validated by full-wave simulations. The supported LH wave is fully characterized and based on the composite right/left-handed transmission-line (CRLH-TL) theory; and the dispersion characteristics, refractive indexes and Bloch impedance are derived theoretically. In addition, formulas to extract equivalent-circuit parameters from full-wave simulation are given. Since the distance d between adjacent cells of the array is small, d \&lt; \&lt; λo and the array becomes a uniform leaky-wave antenna (LWA) for a 10-cell operating near 10 GHz. Simulated radiation pattern, gain, and associated loss budget are presented. The results of LWA exhibit scanning-beam capability from backfire-to-endfire direction and accord well with the theoretical analysis. The antenna is printed on thin and flexible substrate (h = 25 μm). Furthermore, since the antenna is implemented with low-cost and CPW technology, it is a good candidate for integrated RF/microwave systems that can be used in digital wireless communications and radars.},
	keywords = {Coplanar Structure, Microwave systems, Scanning-Beam Antenna},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-80053027377\&partnerID=40\&md5=64150e3e06edecef1c364f45804780d2},
	author = {Hamdi, A.}
}
