Journal ArticleDOI
A 275–370 GHz Receiver Employing Novel Probe Structure
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TLDR
In this article, the authors presented the results of the development of a 275-370 GHz, fixed-tuned double sideband (DSB) receiver based on superconductor-insulator-superconductor (SIS) junction mixer.Abstract:
We present the results of the development of a 275–370 GHz, fixed-tuned double sideband (DSB) receiver based on superconductor-insulator-superconductor (SIS) junction mixer. The mixer block uses a full height rectangular waveguide and employs a novel radial-like probe structure with integrated bias-T. The measured uncorrected receiver noise temperature is 30–50 K corresponding to about 2–3 quantum noise across the full frequency band with an IF from 3.8 to 7.6 GHz. The mixer is to be used on the Atacama Pathfinder EXperiment (APEX) submillimeter telescope in Chile.read more
Citations
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Journal ArticleDOI
Hot-electron bolometer terahertz mixers for the Herschel Space Observatory.
TL;DR: Low noise terahertz mixers developed for the heterodyne spectrometer onboard the Herschel Space Observatory employ double slot antenna integrated superconducting hot-electron bolometers (HEBs) made of thin NbN films, characterized in terms of detection sensitivity across the entire rf band.
Journal ArticleDOI
A 275–425-GHz Tunerless Waveguide Receiver Based on AlN-Barrier SIS Technology
Jacob Kooi,Attila Kovács,M. C. Sumner,Goutam Chattopadhyay,R. Ceria,David P. Miller,Bruce Bumble,Henry G. LeDuc,J. A. Stern,Thomas G. Phillips +9 more
TL;DR: In this article, a 275-425-GHz tunerless waveguide receiver with a 3.5-8-GHz IF was reported, which achieved an unprecedented 43% instantaneous bandwidth, limited by the receiver's corrugated feedhorn.
A Waveguide-to-Microstrip Transition with a DC/IF Return Path and an Offset Probe
Sheng-Cai Shi,Junji Inatani +1 more
TL;DR: In this article, a waveguide-to-microstrip transition with a built-in DC/IF return and an offset probe is proposed for the applications of submillimeter-wave superconductor-insulator-superconductor (SIS) mixers.
Journal ArticleDOI
A Technology Demonstrator for 1.6–2.0 THz Waveguide HEB Receiver with a Novel Mixer Layout
TL;DR: In this article, a balanced waveguide hot-electron bolometer (HEB) mixer operating in the 1.6-2.0 GHz band has been presented, which greatly facilitates handling and mounting of the mixer chip via self-aligning as well as provides easy electrical interfacing.
Journal ArticleDOI
Millimeter-Wave Wideband Waveguide Power Divider With Improved Isolation Between Output Ports
Ahmed Gouda,Cristian Daniel López,Vincent Desmaris,Denis Meledin,Alexey Pavolotsky,Victor Belitsky +5 more
TL;DR: In this article, a thin-film-based power divider for millimeter-wave and THz frequency bands was proposed. But the performance of the power dividers is limited to the frequency band 150-220 GHz.
References
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Journal ArticleDOI
High quality refractory Josephson tunnel junctions utilizing thin aluminum layers
TL;DR: In this paper, high quality all-refractory Josephson tunnel junctions based on Nb/Al−oxide−Nb and Nb−Al−Ooxide−Al/Nb structures are reported.
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85--115-GHz Receivers for Radio Astronomy
TL;DR: In this paper, Pb alloy superconducting tunnel junction mixers operating at 4.5 K were used for low-noise receivers for radio astronomy with double-sideband receiver noise temperature between 70 and 200 K.
Journal ArticleDOI
Waveguide-to-microstrip transition with integrated bias-T
TL;DR: In this article, a waveguide-to-microstrip transition with an integrated bias-T is presented, which couples the RF field of a full-height waveguide to a microstrip line or directly to an active component.
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A Fourier Transform Spectrometer for Measurement of Atmospheric Transmission at Submillimeter Wavelengths
TL;DR: In this paper, a Fourier transform spectrometer for measurements of atmospheric transmission in the spectral interval 300 GHz to 3.5 THz is described, which has been used to evaluate prospective sites for radio astronomical observations at frequencies above 1 THz.