Vol. 110

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2010-11-26

Unequally Spaced and Excited Resonant Slotted-Waveguide Antenna Array Based on an Improved Resonant-Slot Coupled Cavity Chain Composite Right/Left-Handed Waveguide

By Ying Chen, Shao-Wei Liao, Jie Wei, and Jiang-Hua Xu
Progress In Electromagnetics Research, Vol. 110, 421-435, 2010
doi:10.2528/PIER10101905

Abstract

This paper presents a new unequally spaced and excited resonant slotted-waveguide antenna array. It is realized by employing an improved resonant-slot coupled cavity chain composite right/left-handed (CRLH) waveguide. As the CRLH waveguide works at the infinite wavelength frequency, all the slot elements along the waveguide wall are excited in-phase. Thus both the element spacings and excitation amplitudes are introduced into the synthesis to realize a resonant slotted-waveguide antenna array. A seven-element unequally spaced and excited antenna array which generates pencil beam is synthesized, simulated and fabricated. The results show, with comparison to the equally spaced but unequally excited resonant slotted-waveguide antenna array, the proposed unequally spaced and excited array produces a lower peak sidelobe level (PSLL).

Citation


Ying Chen, Shao-Wei Liao, Jie Wei, and Jiang-Hua Xu, "Unequally Spaced and Excited Resonant Slotted-Waveguide Antenna Array Based on an Improved Resonant-Slot Coupled Cavity Chain Composite Right/Left-Handed Waveguide," Progress In Electromagnetics Research, Vol. 110, 421-435, 2010.
doi:10.2528/PIER10101905
http://jpier.org/PIER/pier.php?paper=10101905

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