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|Title: ||Ontwerp en realisatie van een 8-kanaals QAM- demodulator via directe conversie voor de 2,45 GHz ISM- band|
|Authors: ||Caron, Hendrik|
|Issue Date: ||2010 |
|Publisher: ||Hogeschool West-Vlaanderen|
|Abstract: ||Wireless communications are very important today. Therefore it is important to do research in wireless systems to develop new technologies. This master thesis is part of a research project at the University College HOWEST, Graaf Karel de Goedelaan, Kortrijk together with the INTEC group of the Ghent University (UGent). This research project deals with the development of an 8x8 IQ-MIMO wireless transmit system for wireless applications in the 2.4-2.5 GHz ISM band. The focus of this master thesis is the wireless reception and demodulation of 8 QAM channels signals.
The first part is the development of the QAM demodulator which is built around the AD8347 of Analog Devices. This component contains the whole demodulator and can be used to demodulate via direct conversion. It also has an internal implemented AGC (Automatic Gain Control) for the preamplifiers. This makes wireless reception possible.
A second part of this thesis is the realization of the local oscillator for the QAM demodulators.
A PLL synthesizer is chosen to build this oscillator. The TRF3750 is a PLL without internal VCO but it has a serial 3 wire interface on board. This makes it possible to build a user interface that controls the PLL synthesizer.
The last part is the development of the user interface. This interface has pushbuttons and a LCD display to make it easy for the user to control the PLL synthesizer.|
|Appears in Collections:||IZE 2010|
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