1. |
|
|
2. |
- Belitsky, Victor, 1955, et al.
(författare)
-
Facility Heterodyne Receiver for the Atacama Pathfinder Experiment Telescope
- 2007
-
Ingår i: Proceedings of Joint 32nd International Conference on Infrared Millimeter Waves and 15th International conference on Terahertz Electronics, Sept 3-7, 2007, City Hall, Cardiff, Wales, UK. ; , s. 326-328
-
Konferensbidrag (refereegranskat)
|
|
3. |
|
|
4. |
|
|
5. |
- Vassilev, Vessen, 1969, et al.
(författare)
-
A 211-275 GHz Sideband Separating SIS Mixer for APEX
- 2007
-
Ingår i: Proceedings of the 17th International Symposium on Space Terahertz Technology, 10-12 May 2006, Paris, Edited by Dr. Alain Maestrini and Dr. Gérard Beaudin. ; , s. 145-148
-
Konferensbidrag (refereegranskat)abstract
- We present the results of the development and characterization of the sideband separating (2SB) SIS mixer for the APEX band 1, 211-275 GHz.All mixer components, except the IF hybrid, are integrated into a single mixer block. The sideband separation is achieved by using a quadrature scheme where a local oscillator (LO) pumps two identical SIS mixers. The RF power is divided using a waveguide branch line coupler and directed with 900 phase difference to the ends of the substrate, where each path is coupled to the mixer chip through a waveguide to microstrip transition. Preliminary tests of this 2SB mixer show a sideband suppression ratio of about 12 dB and a typical SSB noise temperature of 80K.
|
|