scholarly journals PENGARUH TEMPERATUR SISTEM PADA FIGURE OF MERIT STASIUN BUMI PITA S DAN PITA X

2010 ◽  
Vol 1 (2) ◽  
Author(s):  
Achmadi Surjo ◽  
Sulistyo Atmadi
Keyword(s):  
Figure Of Merit ◽  
Band System ◽  
Elevation Angle ◽  
Satellite Communications ◽  
Sensing System ◽  
Ground Station ◽  
Ground Segment ◽  
X Band ◽  
Communications System ◽  
Space Segment

One of the veri important in a satellite communications system is the figure of merit for space segment as well as for the ground segment. The parameter which will be discussed in this paper is the figure of merit of a ground station of S band and X band for remote sensing system application. The parameters which influences it are antenna gain and temperature of system. The antenna which will be used is parabola antenna whose magnitude gain depends on diamter and efficiency of reflector. While the ground station antenna moves to track the desired satellite, so the elevation angle changes as well as the azimuth angle. On S band system influence of rain cab be ignored, while on the X band the influence needs to be considered. From the analysis conducted at 0.1 time percentage, the result is influence of rain to the "figure of merit is necessary to be estimated.

scholarly journals A microwave active filter for nanosatellite’s receiver front-ends at s-bands

2019 ◽  
Vol 9 (2) ◽  
pp. 973
Author(s):  
Linh Ta Phuong ◽  
Bernard Journet ◽  
Duong Bach Gia
Keyword(s):  
Bandpass Filter ◽  
Vital Role ◽  
Low Noise ◽  
Active Filter ◽  
Coupled Line ◽  
Satellite Technology ◽  
Ground Station ◽  
Ground Segment ◽  
Noise Amplifier ◽  
Space Segment

<p>In satellite technology, the communication between space segment and ground segment plays a vital role in the success of the mission. This paper is targeted at study, design and fabrication of a microwave active filter for the receiver front-ends using coupled line filter structure, which can be applied to the nanosatellite’s communication subsystem. The whole active filter module is a combination of a microstrip bandpass filter and a preceding two-stage wideband low noise amplifier using FET devices. The proposed module operates in the frequency range of 2 - 2.4 GHz, which can be divided to 10 frequency slots of about 40 MHz for each. These frequency slots will be used for the S-band multi-frequency receiving function of the ground station, as well as the nanosatellite. The simulated and measured results of this active filter configuration are presented.</p>

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