A 1x4 focal plane array using 230 GHz SIS mixers

Conference item

A new 1x4 focal plane array centered around 230 GHz is presented in this paper. The size of the array was limited to 4 pixels due to the space available in the test cryostat; however, we can expand the design in the future. On the front of the array block there are 4 waveguides flanges for the RF feed horns, while the local-oscillator signal enters through a separate waveguide on the side. The local-oscillator power is multiplexed using cascaded E-plane power dividers and then combined with the RF signals using directional couplers. Preliminary tests of the array block have now been completed. They show reasonable local-oscillator distribution and excellent RF signal isolation. Future work will involve testing the noise properties of the array block and improving the local-oscillator distribution.

Authors: Garrett, J; Leech, J; Boussaha, F; Chaumont, C; Ellison, B

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: International Symposium on Space Terahertz Technology
• Host title: 29th International Symposium on Space Terahertz Technology (ISSTT 2018)
• Pages: 240-244
• Publication date: 2019-03-01
• Acceptance date: 2017-12-04
• Event title: 29th International Symposium on Space Terahertz Technology (ISSTT 2018)
• Event location: Pasadena, California, USA
• Event website: https://www.isstt2018.com/
• Event start date: 2018-03-26
• Event end date: 2018-03-28
• ISBN: 9781510874749
• Language: English