Development of receiving APAA using DBF for HAPS to provide IMT-2000 service system

Author

Ku, Bon-Jun ; Park, Jong-Min ; Kim, Yang-Su ; Ahn, Do-Seob

Author_Institution

Commun. Satellite Dev. Center, Electron. & Telecommun. Res. Inst., Seoul, South Korea

Volume

4

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

2540

Abstract

High altitude platform station (HAPS) would be located at 20 km above sea level and has a multibeam antenna system. In the multibeam antenna system using the same frequency in all beams, we need a strict radiation beam pattern to reduce the interference between beams and into other services. We analyze the required minimum errors of amplitude and phase distribution on each channel because they affect the sidelobe level in the radiation beam pattern. The statistical simulation results investigated in this paper reveal that the active phased array antenna (APAA) system based on the digital beamforming (DBF) technology is an efficient solution for the HAPS payload. We introduce a prototype of a receiving DBF APAA with 19 elements, and demonstrate the characteristics in IMT-2000 frequency bands.

Keywords

3G mobile communication; antenna phased arrays; antenna radiation patterns; array signal processing; multibeam antennas; radiofrequency interference; receiving antennas; 20 Km; IMT-2000 service; amplitude error; beam interference; digital beamforming technology; frequency band; high altitude platform station; multibeam antenna system; phase distribution; radiation beam pattern; receiving active phased array antenna; sea level; sidelobe level; Array signal processing; Interference; Pattern analysis; Payloads; Phased arrays; Prototypes; Radio frequency; Read only memory; Satellite antennas; Sea level;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285994

Filename

1285994