Broadband High-Gain Periodic Endfire Antenna by Using I-Shaped Resonator (ISR) Structures

Author

Cao, Wenquan ; Zhang, Bangning ; Liu, Aijun ; Yu, Tongbin ; Guo, Daosheng ; Wei, Yi

Author_Institution

Coll. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1470

Lastpage

1473

Abstract

A broadband high-gain periodic endfire antenna is presented in this letter. The gain enhancement is achieved by loading with an I-shaped resonator (ISR) structure in the endfire direction. Parameter extraction for the I-shape unit-cell structure is investigated to analyze its effect on the gain enhancement value of the antenna. Finally, both the ISR-loaded antenna and unloaded one are fabricated to verify the predictions. The measurements show that the ISR-loaded antenna presents gain of about 6.5-9.5 dB in the whole working band (about 5.1-8.3 GHz), which is about 1.5-3.5 dB more than the unloaded one. The advantages of broad bandwidth and high gain make this antenna valuable in wireless communication systems.

Keywords

bow-tie antennas; broadband antennas; microwave antennas; resonators; I-shape unit-cell structure; I-shaped resonator; ISR-loaded antenna; bow-tie antennas; broadband high-gain periodic endfire antenna; frequency 5.1 GHz to 8.3 GHz; gain 6.5 dB to 9.5 dB; gain enhancement; microwave antennas; parameter extraction; wireless communication system; Antenna measurements; Broadband antennas; Gain; Gain measurement; Loaded antennas; Loading; Bowtie antennas; I-shaped resonator (ISR); broadband high-gain antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2232272

Filename

6377230