Circularly polarised digital beam forming transmitting array for mobile satellite communications

Abstract

AbitrPCt: This paper presents a circularly polwised Digital Beam Forming (DBFJ antenna array. The a m y consists of4x4 elements (Fig. Z), and forms a building block for high gain DBF arrays for mobile satellite cmmx"mCationi at 30 GHr (Fig. I). After P general introduction, the antenna element and interconnect design will be discussed. Subsequently, the tranmitter architectwe will be introduced to illustrate the camplexily of the whole system.Finally, measurements afthe electronically steered array are presented.InStiNt fiit Hochfrequsnaechnik. Tcchnische Univenim Braunschweig,

Test and qualification of a Fault Tolerant FPGA based Active Antenna System for space applications

“…Analog Beam Forming (ABF) circuits are being replaced by Digital Beam Forming (DBF) techniques. The interest in the development of DBF systems for space applications is growing up quickly [1][2][3][4][5][6]. Complex DBF algorithms can be implemented and an Active Antenna Array can be obtained.…”