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This paper describes a new field probe taking full advantage of the 1: 4 OMJ bandwidth overcoming the aperture size problem by applying different apertures on the same OMJ. The apertures are circularly symmetric so the exchange of apertures can be performed rapidly without the need to repeat calibration and alignment procedures for the full probe.
Standard Gain Horns (SGH) often find use in modern antenna measurements. They are utilized frequently either as measurements antenna or as reference antenna in antenna gain measurements by comparison or substitution method [1]. They also find use as source antennas in anechoic test chambers and for many other purposes such as fixed site antennas. The most widespread SGH geometry has a rectangular...
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