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2D Beam Scanning Planar Antenna Array Using Composite Right/Left-Handed Leaky Wave Antennas
Tokio KANEDA Atsushi SANADA Hiroshi KUBO
Publication
IEICE TRANSACTIONS on Electronics
Vol.E89-C
No.12
pp.1904-1911 Publication Date: 2006/12/01 Online ISSN: 1745-1353
DOI: 10.1093/ietele/e89-c.12.1904 Print ISSN: 0916-8516 Type of Manuscript: Special Section PAPER (Special Section on Emerging Microwave Techniques) Category: Planar Antennas Keyword: array antennas, 2D beam scanning, leaky-wave antennas, Butler matrices, composite right/left-handed transmission lines, metamaterials,
Full Text: PDF(2.4MB)>>
Summary:
A novel two-dimensional (2D) beam scanning antenna array using composite right/left-handed (CRLH) leaky-wave antennas (LWAs) is proposed. The antenna array consists of a set of CRLH LWAs and a Butler matrix (BM) feeding network. The direction of the beam can be scanned two-dimensionally in one plane by changing frequency and in the other plane by switching the input ports of the BM. A four-element antenna array in the microstrip line configuration operating at 10.5 GHz is designed with the assistance of full-wave simulations based on the method of moment (MoM) and the finite-element method (FEM). The antenna array is fabricated and radiation characteristics are measured. The wide range 2D beam scanning operation with the angle from -30 deg to +25 deg in one plane by sweeping frequency from 10.25 GHz to 10.7 GHz and with four discrete angles of -46 deg, -15 deg, +10 deg, and +35 deg in the other plane by switching the input port is achieved.
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