Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Michael H. Francis"'
Autor:
Ronald C. Wittmann, Michael H. Francis
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
We define and calculate sensitivity for several actual and simulated probes. Probe sensitivity can have a significant impact on the measurement uncertainty associated with probe deconvolution in near-field spherical-scanning, antenna measurements.
Externí odkaz:
https://doaj.org/article/88deb76b0da74c819f7f0721a0e4323e
Publikováno v:
International Journal of Antennas and Propagation, Vol 2012 (2012)
We discuss the mitigation of truncation errors in spherical-scanning measurements by use of a constrained least-squares estimation method. The main emphasis is the spherical harmonic representation of probe transmitting and receiving functions; howev
Externí odkaz:
https://doaj.org/article/dd15979e07b2473dabf71229894c79da
Publikováno v:
2022 Antenna Measurement Techniques Association Symposium (AMTA).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bcbc8a77d84365ee5d8b80fc11a5fe8
https://doi.org/10.23919/amta55213.2022.9954969
https://doi.org/10.23919/amta55213.2022.9954969
Autor:
Michael H. Francis, Bobby Reynolds
This book is about the myriad of Yellowstone National Park collectibles and souvenirs, from 19th-century horseshoes dipped in the park's thermal springs to contemporary books and artwork. Included are exquisite hand-painted Limoges porcelain, histori
Autor:
Michael H. Francis, David R. Novotny, Albin J. Gasiewski, Joshua A. Gordon, Lavanya Periasamy, Ronald C. Wittmann, Jeffrey R. Guerrieri, Alexandra E. Curtin, Miranda L. Butler
Publikováno v:
IEEE Antennas and Propagation Magazine. 59:96-102
Three-dimensional (3-D) printing is finding applications across many areas and may be a useful technology for antenna fabrication for cube satellites (CubeSats). However, the quality of an antenna produced using 3-D printing must be considered if thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f276b0ab13b1eb5187497770665c59b3
https://doi.org/10.1109/map.2017.2655574
https://doi.org/10.1109/map.2017.2655574
Autor:
Michael H. Francis, Miranda L. Butler, Jeffery R. Guerrieri, Joshua A. Gordon, Ronald C. Wittmann, David R. Novotny, Alexandra E. Curtin
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:5351-5362
The National Institute of Standards and Technology (NIST) recently developed a new robotic scanning system for performing near-field measurements at millimeter-wave (mm-wave) frequencies above 100 GHz, the configurable robotic millimeter-wave antenna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61bf59ec53df11a56f7e4cb2f35c6a00
https://doi.org/10.1109/tap.2015.2496110
https://doi.org/10.1109/tap.2015.2496110
Autor:
Michael H. Francis, Ronald C. Wittmann
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
We define and calculate sensitivity for several actual and simulated probes. Probe sensitivity can have a significant impact on the measurement uncertainty associated with probe deconvolution in near-field spherical-scanning, antenna measurements.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::859d881ea2cbc78f8a81cff24318303f
https://doi.org/10.1155/2014/587874
https://doi.org/10.1155/2014/587874
Autor:
Jeffrey R. Guerrieri, Michael H. Francis, Alexandra E. Curtin, Ronald C. Wittmann, Joshua A. Gordon, David R. Novotny
Publikováno v:
2016 10th European Conference on Antennas and Propagation (EuCAP).
NIST has developed a multi-purpose test range for performing several types of antenna testing including spherical, cylindrical, and planar near-field scanning, as well as extrapolation measurements. This range uses a commercial, off-the-shelf, six-ax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b9795746831137e11621db2fd72180
https://doi.org/10.1109/eucap.2016.7481971
https://doi.org/10.1109/eucap.2016.7481971
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 60:2627-2633
An intercomparison of two W-band (75-110 GHz) standard gain horn antennas of nominal gains 24 and 27 dB has been performed at the Korea Research Institute of Standards and Science (KRISS), National Physical Laboratory (NPL), and National Institute of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bf93c7a5586c0fb2eaacd5d9f0f2e24
https://doi.org/10.1109/tim.2010.2103413
https://doi.org/10.1109/tim.2010.2103413
Autor:
Ronald C. Wittmann, Michael H. Francis
Publikováno v:
Modern Antenna Handbook
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33900ccb73f2b0f8daffd04cf19e86ee
https://doi.org/10.1002/9780470294154.ch19
https://doi.org/10.1002/9780470294154.ch19