Automatic design of compact multi-band archimedes spiral antenna using capacity coupling

Author

Maruyama, Tamami ; Cho, Keizo

Author_Institution

NTT DoCoMo, Inc., Yokosuka

fYear

2007

fDate

9-15 June 2007

Firstpage

4136

Lastpage

4139

Abstract

This paper investigates the influence of the capacity coupling on the antenna characteristics. In order to obtain logical results, we adopt the spiral of Archimedes for the scroll configuration and change the mutual and capacity coupling between the meander lines on the layers by changing initial radius r₀ and distance d between the layers of the spiral. After basic study of the antenna characteristics when r₀ and d are changed using a fixed meander line configuration, we investigate the influence of downsizing the antenna on the mutual and capacity coupling using parallel calculation of the GA (genetic algorithm).

Keywords

genetic algorithms; multifrequency antennas; spiral antennas; antenna characteristics; capacity coupling; compact multiband Archimedes spiral antenna; genetic algorithm; meander line configuration; mutual coupling; parallel calculation; Broadband antennas; Cities and towns; Directive antennas; Mutual coupling; Radio spectrum management; Resonance; Resonant frequency; Spirals; Telephone sets; Ultra wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-0877-1

Electronic_ISBN

978-1-4244-0878-8

Type

conf

DOI

10.1109/APS.2007.4396451

Filename

4396451