Circular arrays of log-periodic antennas for broadband applications

Author

Ergül, Özgür ; Gurel, Levent

Author_Institution

Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

1

Lastpage

6

Abstract

Circular arrays of log-periodic (LP) antennas are designed for broadband applications. A sophisticated electromagnetic simulation environment involving integral equations and fast solvers is developed to analyze the LP arrays both accurately and efficiently. The resulting matrix equation obtained by the discretization of the electric field integral equation is solved iteratively via the multilevel fast multipole algorithm (MLFMA). Genetic algorithms interacting with MLFMA is employed to optimize the excitations of the array elements to increase the frequency independence and also to add the beam-steering ability to the arrays.

Keywords

beam steering; broadband antennas; electric field integral equations; genetic algorithms; iterative methods; log periodic antennas; matrix algebra; array beam-steering; broadband application; circular log-periodic antenna array; electric field integral equation; electromagnetic simulation environment; genetic algorithm; iterative solution; matrix equation; multilevel fast multipole algorithm; Antenna arrays; Antenna feeds; Broadband antennas; Directive antennas; Electromagnetic analysis; Frequency; Genetic algorithms; Integral equations; Log periodic antennas; MLFMA; Log-periodic antennas; circular antenna arrays; genetic algorithms; multilevel fast multipole algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation, 2006. EuCAP 2006. First European Conference on

Conference_Location

Nice

Print_ISBN

978-92-9092-937-6

Type

conf

DOI

10.1109/EUCAP.2006.4584913

Filename

4584913