Printed log-periodic dipole antenna with an embedded UWB balun

Author

Keng-Chih Lin ; Yi-Cheng Lin

Author_Institution

Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

1361

Lastpage

1363

Abstract

A microstrip-fed planar log-periodic dipole antenna integrated with a printed ultra-wideband balun on the same PCB is presented. The in-band (1~6GHz) impedances and radiation performance are stable in simulated and measured results. A cross polarization discrimination (XPD) of 20dB is achieved. The stability of main beam direction in the radiation patterns reveals the fixed phase center and the balance of the wideband balun. The novel design of the meander shape along the quasi-transmission line in the antenna and the ground shape of the balun may contribute to the good XPD and bandwidth.

Keywords

antenna feeds; antenna radiation patterns; baluns; dipole antennas; electric impedance; electromagnetic wave polarisation; log periodic antennas; microstrip antennas; planar antennas; transmission lines; ultra wideband antennas; PCB; XPD; antenna radiation pattern; beam direction stability; cross polarization discrimination; embedded UWB balun; in-band impedance; meander shape; microstrip-fed planar log-periodic dipole antenna; printed log-periodic dipole antenna; printed ultra-wideband balun; quasitransmission line; radiation performance; Antenna measurements; Antenna radiation patterns; Broadband antennas; Dipole antennas; Frequency measurement; Impedance matching; Wideband; Antennas; broadband antennas; log periodic antennas; log-periodic dipole antennas; microstrip antenna arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421920

Filename

6421920