PCB design of balanced log-periodic antennas

Author

Weng, Tzu-Hsuan ; Lin, Yi-Cheng

Author_Institution

Graduation Inst. of Commucation Eng., Nat. Taiwan Univ., Taipei

fYear

2009

fDate

23-27 March 2009

Firstpage

1495

Lastpage

1498

Abstract

Log periodic antennas are widely used in EMI/Antenna measurement because of their ultra wideband properties. When designing a planar log-periodic antenna, the feeding method is a main issue. In this paper, a planar log-periodic antenna is fed by a planar Marchand balun. The whole design is illustrated on a PCB without any supporting device. The bandwidth ranges from 1.2 GHz to 3.3 GHz, with maximum radiation at the broadside. Additionally, shielding striplines are employed in the antenna design to suppress the crosspolarization component with successful results.

Keywords

antenna feeds; antenna testing; baluns; electromagnetic interference; electromagnetic wave polarisation; log periodic antennas; microstrip antennas; planar antennas; printed circuit design; ultra wideband antennas; EMI-antenna measurement; PCB design; crosspolarization component; feeding method; planar Marchand balun; planar log-periodic antenna design; shielding striplines; ultra wideband property; Antenna feeds; Antenna measurements; Bandwidth; Broadband antennas; Electromagnetic interference; Frequency; Impedance matching; Log periodic antennas; Transmitting antennas; Ultra wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on

Conference_Location

Berlin

Print_ISBN

978-1-4244-4753-4

Electronic_ISBN

978-3-00-024573-2

Type

conf

Filename

5067897