VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T07:39:35ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2016-12-17T16:18:24Z2016-12-17T16:19:56Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/2174This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/21742016-12-17T16:18:24ZDesign of aC-Band Low-Noise Block Front-end for Satellite ReceiversThis paper describes the study, design and fabrication of a C-band low-noise block front-end for satellite receivers. The front-end consists of a low-noise amplifier, two band pass filters in C-band and L-band, a down-converter and an intermediate frequency amplifier. To reduce noise figure and increase bandwidth, the low-noise amplifier was designed using T-type of matching network with negative feedback. The down-converter used a voltage controlled oscillator with phase locked loop to reduce the phase noise. The front-end converts input signals from C-band (3.4 GHz-4.2 GHz) to the L-band (950 MHz-1750 MHz). The low-noise block has successfully been designed and fabricated with parameters: Overall gain is greater than 60 dB; the noise figure is less than 1dB; phase noise of local oscillator obtains-107.57dBc/Hz at 50KHz.Hoi Tran VanTruong Nguyen XuanLanh Ngo ThiGia Duong Bachduongbg@vnu.edu.vn