Title :
Low-power radio-frequency SiGe analog-to-digital converter
Author :
Thompson, Willie L., II ; Hall, Wesley G. ; Piepmeier, Jeffrey R. ; Johnson-Bey, Charles T.
Author_Institution :
Microwave Instrum. Technol. Branch, NASA Goddard Splace Flight Center, Greenbelt, MD, USA
Abstract :
A low-power, radio-frequency analog-to-digital converter (RF-ADC) for soil moisture remote sensing was designed and fabricated. The RF-ADC is the fundamental component used in a direct-sampling digital radiometer, which is proposed to minimize the power dissipation and system complexity for synthetic thinned array radiometer. The circuit was implemented using 0.8-μm 35-GHz silicon germanium BiCMOS technology. The total power dissipation was 222 mW.
Keywords :
BiCMOS integrated circuits; analogue-digital conversion; hydrological equipment; hydrology; low-power electronics; moisture; radiometers; remote sensing; soil; 0.8 micron; 222 mW; 35 GHz; BiCMOS; RF-ADC; SiGe; analog-to-digital converter; direct-sampling digital radiometer; low-power SiGe ADC; power dissipation; radiofrequency SiGe ADC; remote sensing; silicon germanium; soil moisture; synthetic radiometer; thinned array radiometer; Analog-digital conversion; Circuits; Germanium silicon alloys; Microwave radiometry; Power dissipation; RF signals; Radio frequency; Sampling methods; Silicon germanium; Switches;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1293823
