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Near Field Gain Correction for Standard Gain Horn Antennas

Hyeonjin Chung, R. C. Rudduck

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Abstract

Abstract : Near field corrections are usually required when the far field gain is to be measured for horn antennas. In this research, the object was to investigate the use of the Geometrical Theory of Diffraction (GTD) for calculating near field corrections. Both the GTD and the equivalent line source integration (LSI) method were used for the calculation of the on-axis near fields for non-corrugated pyramidal horns. For the corrugated horns, the aperture integration method (API) was used. Keywords: Hom antennas; Gain.

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What this paper is about

Abstract : Near field corrections are usually required when the far field gain is to be measured for horn antennas. In this research, the object was to investigate the use of the Geometrical Theory of Diffraction (GTD) for calculating near field corrections. Both the GTD and the equivalent line source integration (LSI) method were used for the calculation of the on-axis near fields for non-corrugated pyramidal horns. For the corrugated horns, the aperture integration method (API) was used. Keywords: Hom antennas; Gain.

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Available abstract

Abstract : Near field corrections are usually required when the far field gain is to be measured for horn antennas. In this research, the object was to investigate the use of the Geometrical Theory of Diffraction (GTD) for calculating near field corrections. Both the GTD and the equivalent line source integration (LSI) method were used for the calculation of the on-axis near fields for non-corrugated pyramidal horns. For the corrugated horns, the aperture integration method (API) was used. Keywords: Hom antennas; Gain.

Key concepts: French horn, Horn antenna, Aperture (computer memory), Near and far field, Optics, Physics, Directional antenna, Field (mathematics)

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