Title :
Printed U-shaped slot antennas fed by CPW via inductive coupling
Author :
Fu, Rong ; Zhu, Lei
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A U-shaped slot antenna fed by a coplanar waveguide (CPW) is developed via inductive parallel-coupling between the uniform CPW and a pair of symmetrical U-slot radiators. The series radiation resistance at resonance is first derived versus varied coupling-section and slot dimensions, thereby facilitating the realization of impedance matching. Then, one CPW-fed U-shaped slot antenna is constructed by introducing a half-wavelength shorted-end CPW opposite to the feeding port. Predicted return losses and E- and H-plane radiation patterns are confirmed by measurement of the fabricated antenna.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguide components; electric resistance; impedance matching; microstrip antennas; slot antennas; CPW feed; E-plane radiation patterns; H-plane radiation patterns; U-slot radiators; coplanar waveguide feed; half-wavelength shorted-end CPW; impedance matching; inductive coupling; printed U-shaped slot antennas; return losses; series radiation resistance; Antenna feeds; Antenna measurements; Coplanar waveguides; Coupling circuits; Electric resistance; Equivalent circuits; Geometry; Impedance matching; Resonance; Slot antennas;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2005. IWAT 2005. IEEE International Workshop on
Print_ISBN :
0-7803-8842-9
DOI :
10.1109/IWAT.2005.1461076
