Sideband-separating MMIC receivers for observation in the 3-mm band

James W. Lamb; Kieran A. Cleary; Rohit S. Gawande; Jacob W. Kooi; Michael P. Laxen; Richard L. Plambeck; Rodrigo A. Reeves; Pekka P. Kangaslahti; Mikko Varonen

doi:10.1117/12.2233106

19 July 2016 Sideband-separating MMIC receivers for observation in the 3-mm band

James W. Lamb, Kieran A. Cleary, Rohit S. Gawande, Jacob W. Kooi, Michael P. Laxen, Richard L. Plambeck, Rodrigo A. Reeves, Pekka P. Kangaslahti, Mikko Varonen

Author Affiliations +

Proceedings Volume 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII; 99140H (2016) https://doi.org/10.1117/12.2233106
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

Wideband receivers for the 3-mm band were developed for CARMA, the Combined Array for Research in Millimeterwave Astronomy. Three cryogenic MMIC (monolithic microwave integrated circuit) amplifiers manufactured in InP 35- nm technology are combined in a block with waveguide probes and gain equalizers to cover the 80–116 GHz band. These are followed by a sideband-separating mixer that has two 17 GHZ wide outputs, for upper and lower sidebands. Each receiver has a feed horn followed by a circular-to-linear polarizer and orthomode transducer. The two polarizations are amplified by the cryogenic MMICs, and the outputs downconverted in sideband separating mixers, resulting in four 1–18 GHz channels that can be simultaneously correlated. The first receiver was tested in the lab, and on-sky tests conducted at CARMA. Measured noise temperatures were in the range 40–70 K, with a sideband rejection of about 15 dB.

Citation Download Citation

James W. Lamb, Kieran A. Cleary, Rohit S. Gawande, Jacob W. Kooi, Michael P. Laxen, Richard L. Plambeck, Rodrigo A. Reeves, Pekka P. Kangaslahti, and Mikko Varonen "Sideband-separating MMIC receivers for observation in the 3-mm band", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99140H (19 July 2016); https://doi.org/10.1117/12.2233106

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available