Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2012-04-14
Sieth, M., et al., "Technology developments for a scalable heterodyne MMIC array at W-band," Microwave Conference (EuMC), 2011
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
The copyright owner is the European Microwave Association, EuMA
Scientific paper
We report on the development of W-band (75-110 GHz) heterodyne receiver technology for large-format astronomical arrays. The receiver system is designed to be both mass-producible, so that the designs could be scaled to thousands of receiver elements, and modular. Most of the receiver function- ality is integrated into compact Monolithic Microwave Integrated Circuit (MMIC) amplifier-based multichip modules. The MMIC modules include a chain of InP MMIC low-noise amplifiers, coupled-line bandpass filters and sub-harmonic Schottky diode mixers. The receiver signals will be routed to and from the MMIC modules on a multilayer high frequency laminate, which includes splitters, amplifiers, and frequency doublers. A prototype MMIC module has exhibited a band-averaged noise temperature of 41 K from 82-100 GHz and a gain of 29 dB at 15 K, which is the state- of-the-art for heterodyne multi-chip modules.
Church Sarah
Cleary Kieran
Gaier Todd
Gawande Rohit
Harris Andrew
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