Tipo: materialTypeLabelAnálitica de Seriada

A new look at phaseless planar near-field measurements: limitations, simulations, measurements, and a hybrid solution /

Autor: Farhad Razavi, S.
Tema(s):
Resumen: In this paper, we have revisited the phase-retrieval problem for planar near-field antenna measurements. It will be shown that the complexity of retrieval procedures is a function not only of the independency of different sets of measurements, but also of the characteristic of the antenna under test (AUT). Antenna-pattern features, such as its beam direction, will have a profound effect on the success of phase-reconstruction algorithms. The failure of a well-known phase-retrieval method, the iterative Fourier technique choice of the initial guess. To alleviate the deficiency of the iterative Fourier technique, a simple but effective initial guess is sought by the use of the Differential Evolutionary Algorithm. This global search technique tries to find the best initial phase guess that minimizes an error criterion. Subsequently, this best guess is fed to the iterative Fourier phase-retrieval routine for further phase refinements. Having done this, the far-field can subsequently be constructed. The improvement in the phase-reconstruction algorithm is examined through a series of simulations and measurements

Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
    Valoración media: 0.0 (0 votos)
No hay ítems correspondientes a este registro

SOLICITAR EL ARTICULO EN EL PROGRAMA DE ELECTRONICA Y TELECOMUNICACIONES

Electrónica y Telecomunicaciones

Sistemas

In this paper, we have revisited the phase-retrieval problem for planar near-field antenna measurements. It will be shown that the complexity of retrieval procedures is a function not only of the independency of different sets of measurements, but also of the characteristic of the antenna under test (AUT). Antenna-pattern features, such as its beam direction, will have a profound effect on the success of phase-reconstruction algorithms. The failure of a well-known phase-retrieval method, the iterative Fourier technique choice of the initial guess. To alleviate the deficiency of the iterative Fourier technique, a simple but effective initial guess is sought by the use of the Differential Evolutionary Algorithm. This global search technique tries to find the best initial phase guess that minimizes an error criterion. Subsequently, this best guess is fed to the iterative Fourier phase-retrieval routine for further phase refinements. Having done this, the far-field can subsequently be constructed. The improvement in the phase-reconstruction algorithm is examined through a series of simulations and measurements

No hay comentarios en este titulo.

para colocar un comentario.
Universidad Católica de Colombia
La Universidad Católica de Colombia es una Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación, reconocida mediante Resolución Número 2271 de julio 7 de 1970 del Ministerio de Justicia.
Universidad Católica de Colombia © Copyright 2017
Universidad Católica de Colombia • PBX: (57 1) 3 27 73 00 - (57 1) 3 27 73 33
Bogotá, Avenida Caracas # 46 -72, sede Las Torres • Bogotá, Carrera 13 # 47 – 30, Sede 4​ • Bogotá, Diagonal 46 A # 15 B – 10, sede El Claustro
Bogotá, Carrera 13 # 47 – 49, sede Carrera 13