Title :
A development of upconverter with the function of nonlinear temperature compensation for Ka-band satellite transponders
Author :
Jeong, Jin-Cheol ; Chang, Dong-pil ; Yom, In-Bok
Author_Institution :
Global Area Wireless Technol. Group, ETRI, Taejon, South Korea
Abstract :
A upconverter (U/C) module with the function of the frequency conversion from 3GHz to 20GHz has been developed for on-board switching Ka-band satellite transponders. A nonlinear gain variation within the temperature range of -15°C∼+65°C could be compensated by using a thermal attenuator at the RF part for linear compensation and using a thermistor at the DC part for nonlinear compensation. The developed U/C module showed the conversion gain of 17.1 ±0.2dB at the ambient temperature, the gain variation of 0.4dBmax at any 400MHz operating frequency band over the operating temperature of -15°C ∼+ 65°C.
Keywords :
attenuators; compensation; microwave frequency convertors; satellite communication; thermistors; transponders; -15 to 65 C; 3 to 20 GHz; frequency conversion; nonlinear gain variation; nonlinear temperature compensation; on-board switching Ka-band satellite transponder; thermal attenuator; thermistor device; upconverter module; Attenuators; Frequency conversion; MMICs; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Satellites; Temperature; Thermistors; Transponders;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1607061
