Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Anthony R. Kerr"'
Autor:
Tannaz Farrahi, Robert M. Weikle, Michael E. Cyberey, Anthony R. Kerr, Jiwei Lu, Arthur W. Lichtenberger
Publikováno v:
IEEE Transactions on Applied Superconductivity. 29:1-6
The current state-of-the-art approach for superconductor–insulator–superconductor (SIS) junction fabric-ation is based on magnetron sputtering and the Gurvitch Al overlayer trilayer process, where an Al overlayer is deposited onto the Nb base ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af95d04658993a6b6823fcb1e309de6e
https://doi.org/10.1109/tasc.2018.2884967
https://doi.org/10.1109/tasc.2018.2884967
Autor:
P. Dindo, J. E. Effland, Anthony R. Kerr, S. K. Pan, Arthur W. Lichtenberger, Eugene F. Lauria, Stephane Claude
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 4:201-212
As the Atacama Large Millimeter/submillimeter Array (ALMA) nears completion, 73 dual-polarization receivers have been delivered for each of Bands 3 (84-116 GHz) and 6 (211-275 GHz). The receivers use sideband-separating superconducting Nb/Al-AlOx/Nb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5b6c206f87e99c847285a7b4488f7c9
https://doi.org/10.1109/tthz.2014.2302537
https://doi.org/10.1109/tthz.2014.2302537
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 4:39-48
This paper presents a study characterizing the connection repeatability and reflection coefficient of submillimeter waveguide flanges in the 500-750 GHz band (WR-1.5 or WM-380). The connection repeatability of four types of flange was measured using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cf4aed9fcda2bef71bc563e8e05ef14
https://doi.org/10.1109/tthz.2013.2283540
https://doi.org/10.1109/tthz.2013.2283540
Autor:
J Randa, Anthony R. Kerr
Publikováno v:
IEEE Microwave Magazine. 11:40-52
We have presented a close look at effects of order hf/kT in noise measurements and in the definition of noise quantities-noise temperature, noise figure, etc. Given the perennial push to higher frequency, lower noise, and smaller uncertainty, such ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cbf3f4c1be255ab6b5a57dd0239d870
https://doi.org/10.1109/mmm.2010.937732
https://doi.org/10.1109/mmm.2010.937732
Autor:
Anthony R. Kerr, Ricardo Finger
Publikováno v:
International Journal of Infrared and Millimeter Waves. 29:924-932
Measurements of microwave attenuation at room temperature and 4.2 K have been performed on some conductors commonly used in receiver input circuits. The reduction in loss on cooling is substantial, particularly for copper and plated gold, both of whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c72d7275fb13d0946b78bb4615948671
https://doi.org/10.1007/s10762-008-9394-1
https://doi.org/10.1007/s10762-008-9394-1
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:3525-3528
High-energy-gap superconductors with low resistive loss and high-current-density tunnel barriers are important to increasing the operating range of THz electronics. This paper describes the development of superconducting NbTiN thin films and AlN tunn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::909e6677695e3fcf6edbebb451ac997b
https://doi.org/10.1109/tasc.2007.899353
https://doi.org/10.1109/tasc.2007.899353
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:194-197
180-degree IF hybrids are potentially useful for balanced superconductor-insulator-superconductor (SIS) mixers. We have developed a compact Nb-based 180-degree hybrid for 4-12 GHz which addresses concerns of element size, ohmic loss, and IF bandwidth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33d74ee86dc7262f239ed84163a757a1
https://doi.org/10.1109/tasc.2007.897384
https://doi.org/10.1109/tasc.2007.897384
Publikováno v:
2015 IEEE MTT-S International Microwave Symposium.
In 1979, John Tucker showed that if the nonlinearity of a mixer diode is so sharp that its conductance changes significantly over a voltage increment hf/e, then its mixer characteristics are no longer described by classical mixer theory (e.g., as nor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23d1c73ba0b62c18abea1d9a17383240
https://doi.org/10.1109/mwsym.2015.7166809
https://doi.org/10.1109/mwsym.2015.7166809
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:3878-3881
We have fabricated high quality Nb/Al-oxide/Al/Nb edge junctions using a Nb/SiO/sub 2/ bi-layer film as the base electrode, suitable for use as traveling wave mixers. An edge is cut in the bi-layer with an ion gun at a 45 degree angle using a photore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f06128a0ba3a6775050fc12cab52fecc
https://doi.org/10.1109/77.783874
https://doi.org/10.1109/77.783874
Autor:
Anthony R. Kerr
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 47:325-329
Recent advances in millimeter- and submillimeter-wavelength receivers and the development of low-noise optical amplifiers focus attention on inconsistencies and ambiguities in the standard definitions of noise quantities and the procedures for measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2442486574da1f797753cac9f28f2a12
https://doi.org/10.1109/22.750234
https://doi.org/10.1109/22.750234