Registered
TRANSMITTING AND RECEIVING APPARATUS AND METHOD IN ADAPTIVE ARRAY ANTENNA SYSTEM CAPABLE OF
- Inventors
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Park Hyeong Geun, Bang Seung Chan, Kim Soobum
- Application No.
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10974272 (2004.10.26)
- Publication No.
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20050140546 (2005.06.30)
- Registration No.
- 7205936 (2007.04.17)
- Country
- UNITED STATES
- Project Code
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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)