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A new mechanical phase shifter, a new phased array antenna using the phase shifter and its applications will be shown. The structure of new phase shifter is simpler than previous one we had presented which can reduce a cost and a size of the phased array antenna. The advantage in cost contributes to realize new applications adopting phased array antennas. The front of this paper explains the principle...
This paper describes the thrust and the airgap flux distribution of 2-pole PM linear synchronous motor, The feature of a Halbach array is discussed by comparing with two different type magnet arrangements. One is a conventional magnet arrangement. The other is composed of a Halbach array with a back yoke. 3-D boundary integral equation method is applied to these models. The thrust and the flux density...
Flux concentration in the airgap may attain by adding a Halbach magnet array on the surface of the main magnetic pole of a 2-pole permanent magnet linear synchronous motor (PMLSM). Thrust characteristics significantly change depending on the amount of flux concentration. In this paper, the thrust characteristics by changing the magnet width of normal component in a Halbach array are calculated using...
Outdoor MIMO propagation tests were carried out in an urban area in the Danish city of Aalborg in order to investigate some parameters that affect cellular MIMO base-station antennas. We experimentally examined the 2-by-2 MIMO channel responses of base-station arrays with differently-spaced antennas. From these trials, a clear dependence was found between antenna spacing and fading correlation, going...
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