This paper focuses on the design and implementation of a front-end for a Vinasat satellite receiver with auto-searching mechanism and auto-tracking satellite. The front-end consists of a C-band low-noise block down-converter and a L-band receiver. The receiver is designed to meet the requirements about wide-band, high sensitivity, large dynamic range, low noise figure. To reduce noise figure and increase bandwidth, the C-band low-noise amplifier is designed using T-type of matching network with negative feedback and the L-band LNA is designed using cascoded techniques. The local oscillator uses a voltage controlled oscillator combine phase locked loop to reduce the phase noise and select channels. The front-end has successfully been designed and fabricated with parameters: Input frequency is C-band; sensitivity is greater than -130 dBm for C-band receiver and is greater than -110dBm for L-band receiver; output signals are AM/FM demodulation, I/Q demodulation, baseband signals.
Collaboration network of the authors
11 authors ·
20 co-authorship links
· 9 across different organisations
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Trung tâm Vũ trụ Việt Nam
VNU University of Engineering and Technology
Hai Phong University of Management and Technology
Hiroshima University
Laboratoire de Photonique Quantique et Moléculaire
Affiliation unknown
Different organisations
Same organisation
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Laboratoire de Photonique Quantique et Moléculaire
1
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