Title :
Wideband submillimeter receivers based on series distributed SIS junctions
Author :
Tong, Cheuk-yu Edward ; Grimes, Paul K. ; Blundell, Raymond ; Wang, Ming-Jye
Author_Institution :
Harvard-Smithsonian Center for Astrophsyics, Cambridge, MA 02138, USA
Abstract :
The IF bandwidth of an SIS mixer is limited by its capacitance. A series distributed design reduces the effective junction capacitance and the junctions can be reused as low impedance matching elements, limiting the capacitance of the RF matching network. In this paper, the analysis of this novel design is explored. Two receivers incorporating two types of series distributed SIS mixers were tested at 220 and 350 GHz. IF bandwidths of up to 16 GHz and low noise performance have been demonstrated.
Keywords :
Bandwidth; Capacitance; Junctions; Mixers; Noise; Receivers; Temperature measurement; Distributed mixers; SIS mixers; Submillimeter receivers; ultra wideband receivers;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6259608
