Spherical near-field to far-field transformation by phase retrieval method

Ohashi, Eriko; Arai, Hiroyuki

doi:10.1587/comex.2.325

Cited by 2 publications

(2 citation statements)

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“…Near field to far field transformation technique is known as using Fourier transforms and the equivalence principle [1,2]. In this paper, near field to far field transformation is based on the current distribution on the antenna by solving the matrix equation [3,4]. The radiation from a linear current wave source is expressed by the following equation:…”

Section: Theory Of Proposed Methodsmentioning

confidence: 99%

“…In generally, a near field to far field transformation technique is applied to solve these difficulty. The near field to far field transformation is usually calculated using the phase and amplitude distributions of the near field, but there is a method using the Phase Retrieval (PR) method as an amplitude-only estimation method [1,2,3]. The PR method takes the near field amplitude information on two planes of the antenna under test and recovers the phase information by repeating the calculation between these two planes.…”

Section: Introductionmentioning

confidence: 99%

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EIRP estimation using a phase-less spherical near field measurement

Mitsui

Arai

2022

IEICE ComEX

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This paper presents a far field estimation method using a phaseless spherical near field data, which overcomes OTA test problems such as measurement cost and time. The method is based on matrix equation of radiation from wire grid model by introducing three techniques such as a wire grid source model, an adjustment of matrix equation, and the optimal sampling method. We confirm that far field estimation is conducted with high accuracy by introducing three new techniques in simulation.

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