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Design of a printed non-planar dual-polarised log-periodic dipole array
Shirinabadi, H
Design of a printed non-planar dual-polarised log-periodic dipole array
Shirinabadi, H ; Sharif University of Technology
1147
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- Type of Document: Article
- DOI: 10.1049/iet-map.2016.0444
- Abstract:
- An efficient and low cost approach to realise a non-planar dual-polarised log-periodic dipole array antenna (LPDA) using printed circuit board technology is proposed which achieves a high bandwidth and operational frequency. The proposed antenna utilises a very short transition from a coaxial cable to a balanced four-conductor transmission line to realise an ultra-wide bandwidth balun and input impedance matching. An analysis of the utilised four-conductor transmission line alongside its comparison to two-conductor transmission line of a planar LPDA is also presented. Two prototypes of the antenna operating over the frequency ranges of 1-13 GHz and 1-18 GHz were designed, fabricated, and tested. An average gain of 6.7 dBi is obtained. Measured voltage standing wave ratio, cross-polarisation and front-to-back ratio of both prototypes are better than 2.6, -14, and 22 dB respectively. © 2016. The Institution of Engineering and Technology
- Keywords:
- Antennas ; Bandwidth ; Dipole antennas ; Directive antennas ; Electric lines ; Log periodic antennas ; Microstrip antennas ; Microwave antennas ; Printed circuit boards ; Cross-polarisation ; Front to back ratio ; Input impedance matching ; Log-periodic dipole array antennas ; Log-periodic dipole arrays ; Operational frequency ; Printed circuit board technology ; Ultrawide bandwidth ; Antenna arrays
- Source: IET Microwaves, Antennas and Propagation ; Volume 11, Issue 4 , 2017 , Pages 490-494 ; 17518725 (ISSN)
- URL: https://ieeexplore.ieee.org/document/7887154