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Simple 1 MM Receivers with a Fixed Tuned Double Sideband SIS Mixer and a Wideband INP MMIC Amplifier

Engargiola, G. and Navarrini, A. and Plambeck, R. L. and Wadefalk, N. (2004) Simple 1 MM Receivers with a Fixed Tuned Double Sideband SIS Mixer and a Wideband INP MMIC Amplifier. International Journal of Infrared and Millimeter Waves, 25 (12). pp. 1733-1755. ISSN 0195-9271. doi:10.1007/s10762-004-0194-y.

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We report on techniques to broaden the intermediate frequency (IF) bandwidth of the Berkeley‐Illinois‐Maryland Array (BIMA) 1mm Superconductor‐Insulator‐Superconductor (SIS) heterodyne receivers by combining fixed tuned Double Side Band (DSB) SIS mixers and wideband Monolithic Microwave Integrated Circuit (MMIC) IF amplifiers. To obtain the flattest receiver gain across the IF band we tested three schemes for keeping the mixer and amplifier as electrically close as possible. In Receiver I, we connected separate mixer and MMIC modules by a 1″ stainless steel SMA elbow. In Receiver II, we integrated mixer and MMIC into a modified BIMA mixer module. In Receiver III, we devised a thermally split block in which mixer and MMIC can be maintained at different temperatures–in this receiver module the mixer at 4 K sees very little of the 10–20 mW heat load of the biased MMIC at 10 K. The best average receiver noise we achieved by combining SIS mixer and MMIC amplifier is 45 ‐50 K DSB for ν_(LO) = 215–240 GHz and below 80 K DSB for ν_(LO) = 205 ‐ 270 GHz. Over an IF frequency band of 1 – 4 GHz we have demonstrated receiver DSB noise temperatures of 40 – 60 K. Of the three receiver schemes, we feel Receiver III shows the most promise for continued development.

Item Type:Article
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Additional Information:© 2004 Springer Science+Business Media, Inc. Received 13 September 2004.
Subject Keywords:Millimeter waves; MMIC amplifiers; Radio Astronomy; SIS mixers; Wideband
Issue or Number:12
Record Number:CaltechAUTHORS:20191204-103606954
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Official Citation:Engargiola, G., Navarrini, A., Plambeck, R. et al. Int J Infrared Milli Waves (2004) 25: 1733.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100179
Deposited By: Tony Diaz
Deposited On:04 Dec 2019 19:39
Last Modified:16 Nov 2021 17:52

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