Multi-beam antenna device

A multi-beam antenna suppressing an increase in loss of a Rotman lens to achieve enhanced gain. <α, where: is a spatial beam-forming angle of an array antenna viewed from the a front of the antenna; and α is an angle between a center line of a Rotman lens, and a line segment connecting one of the...

Full description

Saved in:
Bibliographic Details
Main Authors OOTA MASAHIKO, NOMURA TAKETO
Format Patent
LanguageEnglish
Published 15.04.2014
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:A multi-beam antenna suppressing an increase in loss of a Rotman lens to achieve enhanced gain. <α, where: is a spatial beam-forming angle of an array antenna viewed from the a front of the antenna; and α is an angle between a center line of a Rotman lens, and a line segment connecting one of the input ports and an intersecting point S2 of the center line with a curve segment having a plurality of output ports A shape of the Rotman lens such that: =( /α)(Ln/F)<1, and G is less than when =α, where: F is a distance between one input port and S2; 2 Ln is an aperture length of the array antenna; and G is a size of the Rotman lens, defined as a distance between S2 and an intersecting point of the center line with a curve segment having input ports.
Bibliography:Application Number: US200913131752