Open AccessDesign of a Front-End for Satellite Receiver
Author(s) -
Tran Van Hoi,
Ngo Thi Lanh,
Nguyễn Xuân Trường,
Nguyễn Hữu Đức,
Bach Gia Duong
Publication year - 2016
Publication title -
international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.277
H-Index - 22
ISSN - 2088-8708
DOI - 10.11591/ijece.v6i5.pp2282-2290
Subject(s) - local oscillator , low noise amplifier , demodulation , radio receiver design , baseband , amplifier , computer science , noise figure , bandwidth (computing) , electrical engineering , automatic gain control , noise (video) , sensitivity (control systems) , rf front end , electronic engineering , frequency band , front and back ends , telecommunications , engineering , radio frequency , transmitter , channel (broadcasting) , artificial intelligence , image (mathematics) , operating system
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.