Title :
Optimal impedance matching design for broadband Archimedean spiral antennas
Author :
Lisboa, A.C. ; Vieira, D.A.G. ; Saldanha, R.R.
Author_Institution :
Dept. of Electr. Eng., Univ. Fed. de Minas Gerais, Belo Horizonte, Brazil
Abstract :
This paper presents an optimization problem formulation to design broadband antennas with optimal impedance matching considering that the source impedance is tunable inside a range. Usually an antenna is designed to match a given source impedance, which can be too constraining. The new optimization problem formulation is introduced to answer a less strict query: which impedance is optimal for the behavior inside a frequency range of a given antenna? The formulation is used to investigate Archimedean spiral antennas.
Keywords :
broadband antennas; impedance matching; optimisation; spiral antennas; broadband Archimedean spiral antenna; optimal impedance matching; optimization problem formulation; Antennas and propagation; Broadband antennas; Design optimization; Frequency; Ground penetrating radar; Impedance matching; Paper technology; Shape; Spirals; Wire;
Conference_Titel :
Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-7059-4
DOI :
10.1109/CEFC.2010.5481412
