Prototype of 21-GHz Band Beam Forming Network for Array-fed Imaging Reflector Antenna

被引：0

作者：

Nagasaka, Masafumi ^{[1
]}

Nakazawa, Susumu ^{[1
]}

Kamei, Masashi ^{[1
]}

Tanaka, Shoji ^{[1
]}

Saito, Tomohiro ^{[1
]}

机构：

[1] Japan Broadcasting Corp NHK, Sci & Technol Res Labs, Setagaya Ku, Tokyo, Japan

来源：

2015 45TH EUROPEAN MICROWAVE CONFERENCE (EUMC) | 2015年

关键词：

satellite broadcasting; satellite antennas; phased arrays; phase shifters;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A 21-GHz band satellite broadcasting system is being studied as a means of delivering 8K (Super Hi-Vision), 3DTV and other advanced forms of broadcasting. We assumed the use of two 300-MHz wideband channels in the 21.4 to 22.0-GHz band and devised an array-fed imaging reflector antenna (array-fed IRA) to supply enough power for a transponder with such a wide band. The array-fed IRA effectively exploits limited resources because it can control radiation patterns; the 21-GHz band suffers from severe fading due to rain. To confirm the feasibility of the array-fed IRA system, we are currently manufacturing an engineering model of an array-fed IRA, which has a beam forming network (BFN) and a feed array consisting of 32 horn antennas, for a 21-GHz band broadcasting satellite. To evaluate the characteristics of the BFN, we fabricated and tested a prototype of the BFN composed of a 32-divider, 32 phase shifters, and 32 attenuators. Measured results showed that the BFN complies with our requirements.

引用

页码：1455 / 1458

页数：4