Title :
Challenges in 100W CW UHF SSPA for communication payloads
Author :
Doshi, Rajat ; Bansal, Poonam ; Jaiswal, Neeru ; Prajapati, D.R. ; Bijeev, N. ; Bharadhwaj, P.S. ; Kumar, Vipin ; Singh, Sushil
Author_Institution :
Space Applic. Centre, Ahmedabad, India
Abstract :
A 100W CW UHF band SSPA has been developed and qualified for communication payloads in geostationary satellites. The design is based MOSFET devices in push-pull configuration. The Solid State Power amplifier (SSPA) is capable of operating in multi-carrier operation with 3rd Order Inter-Modulation Distortion (IMD) better than 21dBc. The SSPA provides 100W output power with DC power consumption of 320 watts. The design is a four module approach with High power Amplifier designed as balanced amplifier configuration and operating at 54% Power Added Efficiency. A high efficiency 400W Electronic Power Conditioner (EPC) has also been designed and qualified for the SSPA.
Keywords :
MOSFET; differential amplifiers; intermodulation distortion; power amplifiers; satellite communication; DC power consumption; MOSFET devices; UHF SSPA; balanced amplifier configuration; communication payloads; efficiency 54 percent; electronic power conditioner; geostationary satellites; high power amplifier; intermodulation distortion; multicarrier operation; power 320 W; power 400 W; power added efficiency; push pull configuration; solid state power amplifier; Gain; Gallium arsenide; MOSFET; Power amplifiers; Power generation; Space vehicles; Temperature measurement; Efficiency; IMD; MOSFET; SSPA;
Conference_Titel :
Engineering (NUiCONE), 2013 Nirma University International Conference on
Conference_Location :
Ahmedabad
Print_ISBN :
978-1-4799-0726-7
DOI :
10.1109/NUiCONE.2013.6780135
