Title :
A simple model of designing CPW-fed slot antenna
Author_Institution :
Dept. of Electron. Eng., Wu-Feng Inst. of Technol., Ming-Hsiung, Taiwan
Abstract :
The author discusses a simple model which can be used to determine the dimensions of a slot antenna. This simple model can determine easily the width and the length at a given resonant frequency. It offers a good method to find the dimensions of a slot antenna by two-port transmission line theory. If the reflection coefficient is 1/3 in a two-port network, then the reflection in the CPW-fed slot antenna is zero. According to this rule and considering the extension length of the stub-end for a slot antenna, it is easy to find the dimension of the slot antenna at a given frequency. A longer slot length needs a wider slot width in a resonant condition. When the slot length is constant, the wider slot width will arise at the larger cross polarization level in the x-z plane.
Keywords :
antenna feeds; coplanar waveguides; electromagnetic wave polarisation; resonance; slot antennas; transmission line matrix methods; ABCD matrix; CPW-fed slot antenna design; cross polarization level; extension length; reflection coefficient; resonant frequency; slot antenna dimensions; slot length; slot width; stub-end; two-port network; two-port transmission line theory; Antennas and propagation; Bandwidth; Coplanar waveguides; Dipole antennas; Impedance; Moment methods; Reflection; Slot antennas; Transmission line matrix methods; Transmission line theory;
Conference_Titel :
Antennas, Propagation and EM Theory, 2000. Proceedings. ISAPE 2000. 5th International Symposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6377-9
DOI :
10.1109/ISAPE.2000.894851
