Title :
Compact, dualband T-junction Zeroth-Order Resonant antenna with extended bandwidth
Author :
Amani, N. ; Kamyab, M. ; Jafargholi, A.
Author_Institution :
Fac. of Electr. & Comput. Eng., K.N. Toosi Univ. of Technol., Tehran, Iran
Abstract :
A new compact, dualband Zeroth-Order Resonant (ZOR) antenna with proper gain, improved efficiency and widened impedance bandwidth is presented. The Co-Planar Waveguide (CPW) feed is used to simplify fabrication process, neglect via holes and facilitates shunt elements mounting as well as series on a surface. T-junction discontinuity makes the proposed antenna distinctive. Circuit model of the structure and dispersion diagram demonstrated that it occupies CRLH features. By means of the integrity property of the T-junction, antenna´s efficiency is increased up to 70%. The tapered line is employed to improve bandwidth up to 30%, by creating an incremental step in the main line of the T-junction. These characteristics are verified by EM simulator and compared with experimental results.
Keywords :
coplanar waveguides; multifrequency antennas; waveguide antennas; CPW feed; EM simulator; circuit model; co-planar waveguide feed; dispersion diagram; dualband T-junction zeroth-order resonant antenna; fabrication process; shunt elements mounting; tapered line; widened impedance bandwidth; Antennas; Bandwidth; Capacitance; Coplanar waveguides; Inductance; Microstrip; Resonant frequency; Composite right/left handed transmission line (CRLH TL); Metamaterial (MTM); T-junction discontinuity; ZOR antenna;
Conference_Titel :
Electrical Engineering (ICEE), 2013 21st Iranian Conference on
Conference_Location :
Mashhad
DOI :
10.1109/IranianCEE.2013.6599669
