Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Wide-Band Slot Antennas with CPW Feed Lines: Hybrid and Log-Periodic Designs



Alpesh Bhobe, Christopher L. Holloway, Melinda Piket-May, Richard Hall


In microwave and millimeter wave applications, slot antennas fed by coplanar waveguides (CPW) are receiving increasing attention. These antennas have several useful properties, such as wider bandwidth as compared to microstrip patch antennas and easier integration of solid-state active devices. In this paper novel CPW-fed wideband slot antennas are presented. The design procedure of CPW-fed Hybrid Slot Antennas (HSA) having impedance bandwidths up to 57% are described. Theoretical and measured results are shown. We also describe the design procedure of CPW-fed log-periodic slot antenna (LPSA). The impedance matching and the radiation characteristics of these structures were studied using method of moment technique. Simulated and measured results for different dielectrics are presented.
IEEE Transactions on Antennas and Propagation


CPW feed antenna, log-periodic, slot antenna, wide-band antenna


Bhobe, A. , Holloway, C. , Piket-May, M. and Hall, R. (2004), Wide-Band Slot Antennas with CPW Feed Lines: Hybrid and Log-Periodic Designs, IEEE Transactions on Antennas and Propagation, [online], (Accessed April 24, 2024)
Created October 10, 2004, Updated October 12, 2021