Development of integrated HEB/MMIC receivers for near-range terahertz imaging
Abstract
We present measurement results for a new type of integrated terahertz receiver, as an extension to previous work by the authors. The receiver we developed integrates quasi-optically coupled phonon-cooled NbN hot electron bolometric (HEB) mixers in close proximity with InP monolithic microwave integrated circuit (MMIC) intermediate-frequency (IF) amplifiers. We have measured antenna radiation pattern, receiver noise temperature, and bandwidth, as well as short-term stability of the integrated receivers. The measurements were performed at 1.6 and 2.5 THz over a very broadband IF frequency range. We have been able to extend the effective bandwidth of these receivers up to 5 GHz, the widest reported for any integrated configuration operating above 1 THz. The suitability of the HEB/MMIC approach for imaging applications has been confirmed through the development of a prototype system for near-range scanning. The results presented here are very promising for the future development of heterodyne focal plane arrays for space-based receivers, medical applications, and surveillance.
Additional Information
© Copyright 2006 IEEE. Reprinted with permission. Manuscript received October 8, 2005; revised February 20, 2006. [Posted online: 2006-06-19] This work was supported by NASA through the Langley Research Center under Contract NAS1-01058 and by CONACyT, Mexico. Grateful acknowledgement is made to Dr. S. Weinreb, Jet Propulsion Laboratory, Pasadena, CA, for supplying the MMIC chips as well as Dr. P. Khosropanah, Chalmers University of Technology, Göteborg, Sweden, for device fabrication. The authors are also grateful to V. Fath, University of Massachusetts at Amherst, for his help on the receiver block assembly.Files
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Additional details
- Eprint ID
- 5997
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- CaltechAUTHORS:RODieeetmtt06
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2006-11-10Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field