Summary
International Symposium on Antennas and Propagation
2008
Session Number:1C06
Session:
Number:1C06-2
Design of Millimeter-wave Slotted-Waveguide Planar Antenna for Sub-array of Beam-scanning Antenna
Kunio Sakakibara, Akihiro Kawasaki, Nobuyoshi Kikuma, Hiroshi Hirayama,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
Beam-scanning antennas are attractive for high-bit-rate data communication systems and high resolution sensing systems in millimeter-wave band. Waveguide antenna is one of the most attractive antennas for such millimeter-wave systems because of its low loss and high efficiency characteristics in high frequency band. Horizontally-beam-scanning antennas such as phased arrays and DBF (Digital Beam Forming) systems consist of multiple vertically-long sub-arrays arranged in horizontal direction as shown in Fig. 1. Beam scanning is achieved by giving individual phase to each sub-array from beamforming network. We developed a vertically-long slot-array antenna composed of two feeding waveguides in the millimeter-wave band. One of the solutions for grating lobe suppression is introduced in this paper. Feasibility of the proposed antenna is confirmed by experiments.