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Registered TRANSMITTING AND RECEIVING APPARATUS AND METHOD IN ADAPTIVE ARRAY ANTENNA SYSTEM CAPABLE OF

실시간 오차 보정 기능을 가진 적응 배열 안테나 시스템에서의 송수신 장치 및 그 방법
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Inventors
Park Hyeong Geun, Bang Seung Chan, Kim Soobum
Application No.
10974272 (2004.10.26)
Publication No.
20050140546 (2005.06.30)
Registration No.
7205936 (2007.04.17)
Country
UNITED STATES
Project Code
03MM1100, Research on 4G Mobile Communications Technology, Han Ki Chul
Abstract
Disclosed are a transmitting and receiving apparatus and method in an adaptive array antenna system capable of real-time calibration. Transfer functions in the transmitting and receiving apparatus are estimated by injecting a calibration signal to each of transmit and receive channels and analyzing the signals that has passed through the transmit and receive channels. An RF CW sinusoidal signal of a single frequency can be used as the calibration signal to simplify a process of signal processing in a baseband. In addition, in the calibration of the receiving apparatus, gains of all receive channels are controlled using an identical signal. Thus, a relative transfer function characteristic of the receive channels is constant irrespective of the gains of the receivers.
KSP Keywords
Adaptive array, Adaptive array Antenna, Array antenna, Array antenna system, Real-Time, Real-Time calibration, Signal Processing, Sinusoidal signal, Time calibration, distributed antenna systems(DAS), relative transfer function(RTF), single frequency, transfer function(DTF)