A 211-275 GHz Sideband Separating SIS Mixer for APEX
Paper in proceeding, 2007
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.
SIS mixer
sideband separating mixers
quadrature hybrid
Author
Vessen Vassilev
Chalmers, Department of Radio and Space Science, Advanced Receiver Development
Raquel Monje
Chalmers, Department of Radio and Space Science, Advanced Receiver Development
Alexey Pavolotskiy
Chalmers, Department of Radio and Space Science, Advanced Receiver Development
Dimitar Milkov Dochev
Chalmers, Department of Radio and Space Science, Advanced Receiver Development
Victor Belitsky
Chalmers, Department of Radio and Space Science, Advanced Receiver Development
Proceedings of the 17th International Symposium on Space Terahertz Technology, 10-12 May 2006, Paris, Edited by Dr. Alain Maestrini and Dr. Gérard Beaudin
145-148
Subject Categories
Telecommunications
Other Electrical Engineering, Electronic Engineering, Information Engineering