A novel type of compact coplanar waveguide antenna

A coplanar waveguide antenna (CWA) is proposed and investigated experimentally. The CWA consists of an open coplanar waveguide circuit and is fed by a coplanar waveguide with a characteristic impedance of 50 Ω. The measured return loss shows that the radiation mainly comes from the slot surrounding the open coplanar waveguide circuit. The area of the CWA is about 1/8 that of the corresponding microstrip antenna. © 1993 John Wiley & sons, Inc.