Title :
Very broadband loaded monopole antennas
Author :
Yegin, K. ; Martin, A.Q.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA
Abstract :
A novel antenna design method is proposed and applied to overcome the narrowband characteristics of the monopole antenna by loading it with lumped elements. A genetic algorithm based optimization technique is used to determine the load values, their respective locations and the matching network elements. A bandwidth ratio of 20:1 within the frequency range of 23-460 MHz is achieved with a 2 meter long loaded monopole antenna, and by electronically switching three different matching networks a bandwidth ratio of 64:1 is obtained between 15 MHz to 960 MHz.
Keywords :
genetic algorithms; impedance matching; lumped parameter networks; monopole antennas; 15 to 960 MHz; 2 m; HF; UHF; VHF; antenna design method; bandwidth ratio; broadband loaded monopole antennas; electronically switching; frequency range; genetic algorithm; load locations; load values; lumped elements; matching network elements; narrowband characteristics; optimization technique; Bandwidth; Broadband antennas; Design methodology; Frequency; Genetic algorithms; Loaded antennas; Minimization; Narrowband; Spread spectrum communication; Voltage;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.630128
