DocumentCode :
44097
Title :
Bandwidth Enhancement of SIW Horn Antenna Loaded With Air-Via Perforated Dielectric Slab
Author :
Yang Cai ; Zu-Ping Qian ; Ying-Song Zhang ; Jun Jin ; Wen-Quan Cao
Author_Institution :
Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
Volume :
13
fYear :
2014
fDate :
2014
Firstpage :
571
Lastpage :
574
Abstract :
A substrate integrated waveguide (SIW) horn antenna loaded with air-via perforated dielectric slab for bandwidth enhancement is proposed in this letter. The narrow impedance bandwidth of the planar horn antenna is mainly resulting from the discontinuity between the substrate and air. By simply drilling air-vias with different diameters in the substrate extended from the horn aperture, a smooth transition from substrate to air can be achieved, which can enhance the impedance bandwidth of the antenna in much degree. Measured results show that the enhanced impedance bandwidth of 40% from 16 to 24 GHz is obtained with the return loss |S11| below -10 dB. In addition, stable radiation patterns are observed over the entire operating band.
Keywords :
antenna radiation patterns; horn antennas; microwave antennas; planar antennas; slabs; substrate integrated waveguides; SIW horn antenna; air-via perforated dielectric slab; bandwidth enhancement; frequency 16 GHz to 24 GHz; horn aperture; impedance bandwidth; planar horn antenna; stable radiation patterns; substrate integrated waveguide horn antenna; Antenna measurements; Bandwidth; Dielectric constant; Horn antennas; Slabs; Substrates; Air-via; bandwidth enhancement; dielectric slab; substrate integrated waveguide (SIW);
fLanguage :
English
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
Publisher :
ieee
ISSN :
1536-1225
Type :
jour
DOI :
10.1109/LAWP.2014.2312917
Filename :
6776449
Link To Document :
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