(A) design of digital beamforming system using SDR and GNUradioSDR과 GNUradio를 이용한 디지털 빔 형성 시스템 설계

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Phased array technology has been developing with advances in integrated circuits, analysis and design programs. The conventional beamforming techniques have disadvantages that the more number of array antennas increase, the more complexity of beamforming system is large. For example, additional analogue block or analogue circuits should be needed to shift phase. Because of this reason, next-generation phased arrays will build on digitization, which can easily do digital signal processing and do not have to need additional analogue parts. However, there is not much research on this field yet. This dissertation proposes a digital array antenna beamforming system and technique. Because digital beamforming system is consist of lots of RF parts and analogue circuits, even if all reference signal synchronized is used, there is a phase difference between input signals due to chip tolerance, and temperature. To solve this problem, digital array calibration technique was designed using digital processing block with correlation coefficient. Also, digital phase shifter was designed with digital mixer and digital source. Using these digital processing blocks, three array digital beamforming system is fabricated and experiment results equal to simulation results are obtained.
Advisors
Park, Seong Ookresearcher박성욱researcher
Description
한국과학기술원 :전기및전자공학부,
Publisher
한국과학기술원
Issue Date
2017
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2017.2,[iii,49 p. :]

Keywords

Phase Shifter; Digital Beamforming; Linear Phase Array Antenna; DIgital Signal Processing; Arraya Factor; 위상변조기; 디지털 빔 형성; 선형배열안테나; 디지털 신호처리; 가중계수

URI
http://hdl.handle.net/10203/243251
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=675356&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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