Calculation of Wide Angle Radiation Patterns and Caustics of a Dielectric Lens Antenna by a Ray Tracing Method(Antennas, Circuits and Receivers)(<Special Section>Wave Technologies for Wireless and Optical Communications)

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概要

• 論文の詳細を見る

• Recently, dielectric lens antennas are paid attentions in ITS applications. Many lens shape designing methods were already developed. And electrical performances were estimated through a ray tracing method. Here, arbitral lens shapes were expressed by a system of power series. In the case of ray tracing, time-consuming three-coordinate root-finder programs were needed to find intersection points of rays on the lens surfaces. In order to calculate complicated structures such as zoned lenses and complicated rays such as multiple reflections between lens surfaces, simple ray tracing methods are requested. In this paper, a simple ray tracing method that utilizes directly designed discrete points of lens surfaces is developed. In this method, a refracted ray is automatically determined for a given incident ray. As for an intersecting point of a lens surface for an outgoing ray, the nearest point to the refracted vector is found out by employing a simple searching procedure. This method is time-saving compared to the previous three-coordinate root-finding program. Through calculated results of focal points and radiation patterns in wide angle beam steering, effectiveness of a developed method is ensured. Application of the developed ray tracing method of complicated multiple reflections are studied. Reflecting points are found out speedily by the same searching procedure. A calculated example of doubly reflected rays is obtained. Through comparing calculated and measured results of wide angle radiation patterns, effectiveness of a developed method is ensured.

• 社団法人電子情報通信学会の論文
• 2004-09-01

著者

• Sasaki S

  The Department Of Electronical And Electronic Engineering National Defense Academy

• Kezuka Atsushi

  The Department Of Electronical And Electronic Engineering National Defense Academy

• Yamada Yoshihide

  The Department Of Electronical And Electronic Engineering National Defense Academy

• TAJIMA Yousuke

  the Department of Electronical and Electronic Engineering, National Defense Academy

• SASAKI Seigo

  the Department of Electronical and Electronic Engineering, National Defense Academy

• Tajima Yousuke

  The Department Of Electronical And Electronic Engineering National Defense Academy

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• An Adaptive Array Antenna Based on the IQ-Division Bandpass Sampling
• Radiation Pattern Synthesis of a Lens Horn Antenna(Antennas, Circuits and Receivers)(Wave Technologies for Wireless and Optical Communications)
• Calculation of Wide Angle Radiation Patterns and Caustics of a Dielectric Lens Antenna by a Ray Tracing Method(Antennas, Circuits and Receivers)(Wave Technologies for Wireless and Optical Communications)

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