The existing planar near-field antenna test range at Alcatel Space (ASP) in Toulouse has recently been enlarged and the frequency bandwidth increased to 18.5 GHz to allow for the testing of large fully integrated space flight antennas. This upgraded test range, including a specific reconfigurable ...
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Near field Cassegrain antenna - has collecting reflector with circular segment steps movable by flap device to produce 180 degree phase shiftThe antenna consists of a primary radiator (1) (eg a horn), an auxiliary reflector (2), a collecting reflector (3) and a main reflector (4). The ...
Oguri, F. Matsuda, Holographic phase-retrieval method of near-field antenna pattern measurement for bolometer-array-equipped millimeter-wave telescopes. J. Astronom. Telesc. Instrum. Syst. 9(2), 028003 (2023). https://doi.org/10.1117/1.JATIS.9.2.028003 Article ADS Google Scholar H. ...
The scattered field obtained from simulations at 500 Hz is shown in Fig. 1b. It can be seen that the propagation of the reflected wave is basically along the vertical direction. However, the phenomenon of diffraction occurs in the near-field and also at the two extremities of the plate, ...
A rotatable reflector antenna system that supports on-the-move communications to and from a mobile land, airborne, or maritime vehicle with a remote communication device, such as a
Alignment of illuminator of a reflector antenna on the basis of the near-field configuration The possibility of positioning the feed in a reflector antenna by visually observing the phase distribution of the field on the plane situated in front of ... EI Vainberg,IA Zhosan,IA Kolosov,... -...
. These conductive pattern layers have a function as an antenna or a circuit. The conductive pattern layer in an embodiment of the present invention may be directly formed on the surface of the laminated film of the present invention. Alternatively, a method of providing a conductive pattern ...
antenna aperture of the prior art MW motion sensor100as it is well known in the art that an antenna aperture is the portion of a plane surface very near the antenna and normal to the direction of maximum radiant intensity, through which the major part of the radiation passes. In other ...
Near field Cassegrain antenna - has lobe widened by moving region of auxiliary reflector between horn radiator and collecting reflectorThe antenna consists of a primary radiator (1),(eg a horn), an auxiliary reflector (2), a collecting reflector (3) and a main reflector. The auxiliary ...