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>

An Integrated Two-Mode Tunable Channelized Low-Noise Active Filter

2018 ◽  
Vol 27 (06) ◽  
pp. 1850090
Author(s):  
Amin Alahyari ◽  
Massoud Dousti ◽  
Mohammad Bagher Tavakoli
Keyword(s):  
Bandpass Filter ◽  
Impedance Matching ◽  
Low Noise ◽  
Active Filter ◽  
Center Frequency ◽  
Pass Filter ◽  
Filter Output ◽  
Band Stop Filter ◽  
Circuit Input

In this paper, a new structure for an integrated channelized active filter is proposed. This filter can be used as a channelized bandpass filter and again as a channelized band-stop filter. This is fulfilled by using one biasing voltage. In designing a three-channel bandpass filter, a recursive differential structure is used. Moreover, by subtracting bandpass filter output from an all-pass output, the proposed three-channel band-stop filter is achieved. A wideband amplifier plays the role of an all-pass filter. In addition, to decrease the noise of this filter, a noise-canceling circuit is adopted. By using this circuit, input impedance matching is obtained simultaneously. The center frequencies of the two-mode channelized filter are 2, 4 and 6[Formula: see text]GHz. In each of them, the center frequency is controlled via two biasing voltages. The maximum center frequency shift is 450[Formula: see text]MHz. For designing the proposed circuit, GaAs 0.15[Formula: see text][Formula: see text]m technology is applied. The occupied area is [Formula: see text][Formula: see text]mm2.

Design and simulation of HBT differential Low Noise Amplifier and LC active filter

2011 ◽  
Author(s):  
Monire Sadat Miri ◽  
Jalil Ghahramani ◽  
M. Soleimani Farrokh ◽  
Shahab Rezakhani ◽  
A.M. Kordalivand
Keyword(s):  
Low Noise ◽  
Active Filter ◽  
Low Noise Amplifier ◽  
Noise Amplifier

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 Research, Design and Fabrication Microwave Modules of Receiver for NanoDragon satellite at S band

2019 ◽  
Vol 35 (2) ◽  
Author(s):  
Bui Thi Ha ◽  
Bach Gia Duong
Keyword(s):  
Research Design ◽  
Transmission Rate ◽  
Local Oscillator ◽  
High Gain ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Two Stage ◽  
Ground Station ◽  
Noise Amplifier

Abstract: In the paper, the new microwave modules of NanoDragon satellite’s receiver were designed and fabricated. Purpose of this design is not only reduce budget but also respond to frequency requirement, bandwidth and transmission rate. The microwave modules consist of low noise amplifier (LNA), mixer and local oscillator (LO). These modules operate at S band according to requirement of satellite. Firstly, each module was designed, simulated, fabricated and measured. Then they were integrated together. Output of integrated microwave modules is IF signal with bandwidth is suitable for demodulation PCM – PM (BPSK). And have high gain value conform to receiver’s requirement. Simulation result of low noise amplifier is 19.108 dB at 2.9 GHZ. Simulation result of integrating two stage LNA become 2-stage LNA have gain value over 38 dB. Gain value obtained is 11.5 dB when measurement. Integrating microwave modules result is 10.5 dB with gain value. That mean this microwave modules of receiver operated very well. LNA was very good. This subsystem can apply for NanoDragon satellite’s receiver and receiver of ground station. Keywords: Receiver, Microwave Modules of Receiver, Satellite, NanoDragon satellite, LNA, Mixer, LO, IF.

A Wideband Low-Noise Amplifier with Active and Passive Cross-Coupled Feedbacks

2018 ◽  
Vol E101.C (1) ◽  
pp. 82-90
Author(s):  
Chang LIU ◽  
Zhi ZHANG ◽  
Zhiping WANG
Keyword(s):  
Low Noise ◽  
Low Noise Amplifier ◽  
Noise Amplifier

A dual-band low noise amplifier

2014 ◽  
Author(s):  
Z. Zhang ◽  
Z.H. Li ◽  
W.R. Zhang ◽  
F.Y. Zhao ◽  
C.L. Chen ◽  
...  
Keyword(s):  
Low Noise ◽  
Low Noise Amplifier ◽  
Dual Band ◽  
Noise Amplifier
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