%0 Journal Article
%@ 2088-8708
%A Tran, Van Hoi
%A Ngo, Thi Lanh
%A Nguyen, Xuan Truong
%A Nguyen, Huu Duc
%A Bach Gia, Duong
%D 2016
%F SisLab:2172
%J International Journal of Electrical and Computer Engineering
%N No.5
%P P.2282-P.2290
%T Design of a Front-End for Satellite Receiver
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2172/
%V Vol.6,
%X 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.