A 2.0 GS/s Two-Stage Quad-Channel Digital Downconverter for a 380 GHz Spaceborne Atmospheric HO Monitoring Instrument
- Resource Type
- Periodical
- Authors
- Tang, A.; Khanal, S.; Virbila, G.; Livesey, N.; Werner, F.; Chattopadhyay, G.; Chang, M.F.
- Source
- IEEE Transactions on Circuits and Systems II: Express Briefs IEEE Trans. Circuits Syst. II Circuits and Systems II: Express Briefs, IEEE Transactions on. 70(1):21-25 Jan, 2023
- Subject
- Components, Circuits, Devices and Systems
Finite impulse response filters
Switches
Space vehicles
Transmitters
Terrestrial atmosphere
Read only memory
Frequency measurement
SWITCH
water vapor absorption
digital downconversion
DDC
stratosphere
- Language
- ISSN
- 1549-7747
1558-3791
This brief presents a quad-channel 2.0 GS/s digital downconverter (DDC) chip in 65nm CMOS that supports the NASA Stratospheric Water Inventory and Tomography by Convective Hydration (SWITCH) spaceborne instrument. The presented DDC chipset provides a wide input bandwidth and allows the transmitted 380 GHz signals to be channelized to perform the atmospheric measurements. The prototype DDC chip is implemented in a 65nm CMOS technology and consumes 177mW of DC power.