Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
A high efficiency power amplifier at x-band for satellite communication
Date
2003-12-01
Author
Sen, Ozlem
Dudak, Celal
Nakiboğlu, Barış
Metadata
Show full item record
Item Usage Stats
229
views
0
downloads
Cite This
Efficiency linearity trade off is an important criteria in low earth orbit (LEO) satellite transmitter. In this paper, two X-band power amplifiers, one class A power amplifier and one harmonically terminated class A amplifier, are designed with an output power of 7W, total gain of 18.5dB and bandwidth of 200MHz are designed and compared in terms of efficiency and linearity. With acceptable linearity, the former is expected to give 30% efficiency while the later is expected to give 50% efficiency at 8.2GHz with FLM7785-4F and FLM7785-12F internally matched transistors from Fujitsu Quantum Devices. © 2003 by the American Institute of Aeronautics and Astronautics, Inc.
Subject Keywords
Communication satellites
,
Economic and social effects
URI
https://hdl.handle.net/11511/86241
DOI
https://doi.org/10.2514/6.2003-2386
Conference Name
21st International Communications Satellite Systems Conference and Exhibit, ICSSC 2003, 15 - 19 Nisan 2003
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
A two stage solid state power amplifier at X-band for satellite communication
Sen, Özlem; Dudak, C.; Nakiboğlu, Barış (2003-01-01)
Low earth orbit (LEO) satellites play an important role in earth observation and communication fields. Since communication with LEO has time limitation, it is important to have high data rate transmitters in addition to having properties as small volume, lightness and efficiency. In this work, an X-band (8.2 GHz) solid state power amplifier is designed with an output power of 7W, total gain of 18.0dB and bandwidth of 200MHz as a part of an onboard transmitter with data rate of 100 Mbps. The power amplifier ...
A Control moment gyroscope based on rotational vibrations, dynamic model and experimentation
Arberkli, Ferhat; Azgın, Kıvanç; Department of Mechanical Engineering (2018)
Satellite attitude determination and control system is one of the main subsystems of a spacecraft. Within this domain, there are several types of actuators; such as reaction wheels, control moment gyroscopes (CMG), propulsion systems and magnetic torque rods. All of them are common and currently being used on modern satellites and space stations depending on the application. Conventional reaction wheel and CMG operation are based on the continuous rotation of their rotor mass to exchange angular momentum be...
X Band TX reject waveguide bandpass filter design for satellite communication systems
Çelebi, İrem; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2018)
For several applications such as satellite communication, filters are required since antenna systems are operating as both receiving and transmitting. There is a possibility of leakage from transmit to the receive path in these kind of systems which needs to be isolated in order to protect equipments after filter. Low loss, high isolation and bandpass characteristics are desired for the filtering, which can be validated with waveguide filters. In this study, bandpass waveguide filter design operating in X-Band f...
Experimental and computational evaluation of transient behavior of a typical satellite monopropellant propulsion system
Çilli Tarçın, Ayşegül; Aksel, Mehmet Haluk; Ak, Mehmet Ali; Department of Mechanical Engineering (2014)
In this study, a typical satellite monopropellant propulsion system is numerically modeled by using a commercial software and analyses are conducted regarding the priming operation of satellite propulsion system. Analyses are performed for different tank pressures, downstream line pressures, distance between the tank and orifice, distance between the orifice and latch valve, distance between the latch valve and exit valve, orifice diameter and pipe diameters. Moreover, a test setup is constructed and tests ...
Link analysis for BILSAT-1
Telli, Ali; Es, Alphan (2006-03-11)
,BILSAT-1, a 130 kg micro satellite, is Turkey's,2 first Low Earth Orbit Earth (LEO) observation satellite(1,2). The project was started in August 2001 at Surrey Satellite Technologies Limited (SSTL)'s facilities in Guildford, UK and BILSAT-1 was launched successfully from Plesetsk Cosmodrome, Russia in 27 September 2003. The main objective of the mission is remote sensing. The communications subsystem is a core system for Earth observation satellite. It is generally used for telemetry/telecommand signaling...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
O. Sen, C. Dudak, and B. Nakiboğlu, “A high efficiency power amplifier at x-band for satellite communication,” Yokohama, Japonya, 2003, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/86241.