Title :
Representation of a stepped-radius antenna by a loaded antenna
Author :
Yokota, T. ; Sakitani, A. ; Egashira, S.
Author_Institution :
Dept. of Electron., Saga Univ., Japan
Abstract :
Presents a new method to represent a stepped-radius antenna by a uniradius loaded antenna with lumped impedances. The stepped-radius antenna can be analyzed by applying the moment method to the integral equation of a loaded antenna with lumped impedances. The authors investigate the validity of this method by numerical results. The numerical examples of the current distributions and the input impedances for these antennas, are presented and discussed. Furthermore, as an application of this method, an improvement of the input impedance characteristic of a stepped-radius antenna is presented.<>
Keywords :
antenna theory; current distribution; electric impedance; integral equations; lumped parameter networks; method of moments; current distributions; input impedance characteristic; integral equation; lumped impedances; moment method; stepped-radius antenna; uniradius loaded antenna; Conductors; Current distribution; Frequency; Impedance; Integral equations; Loaded antennas; Moment methods; Reflection; Transmission line antennas; Transmission line theory;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407749
