Log-periodic dipole antenna with low cross-polarization

Author

Pivnenko, Sergey

Author_Institution

Orsted-DTU, Tech. Univ. of Denmark, Lyngby

fYear

2006

fDate

6-10 Nov. 2006

Firstpage

1

Lastpage

4

Abstract

In this work, log-periodic antennas with improved cross-polarization level were studied. It was found that some modifications of the traditional design lead to an essential improvement of the co-to-cross polarization ratio up to 40 dB. An improved design of a log-periodic dipole antenna with low cross-polarization level is described. Some recommendations regarding improvement of the polarization characteristics of log- periodic antennas in general are also given. It was also found that log-periodic antennas can be attributed to the class of so-called first-order (m = plusmn1) antennas, which is an important requirement for probes in spherical near- field antenna measurements.

Keywords

dipole antenna arrays; electromagnetic wave polarisation; log periodic antennas; co-to-cross polarization; first-order antenna; log-periodic dipole antenna; spherical near-field antenna measurement; Antenna measurements; Arm; Broadband antennas; Dipole antennas; Feeds; Frequency measurement; Log periodic antennas; Log-periodic dipole antennas; Polarization; Probes;

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.2006.4585044

Filename

4585044