Zobrazeno 1 - 10
of 157
pro vyhledávání: '"W.L. Stutzman"'
Autor:
Yahya Rahmat-Samii, W.L. Stutzman
Publikováno v:
IEEE Transactions on Antennas and Propagation. 46:745-748
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6295c08743da4f38f4248cea866bb001
https://doi.org/10.1109/tap.1998.686757
https://doi.org/10.1109/tap.1998.686757
Autor:
W.L. Stutzman, Bing Shen
Publikováno v:
IEEE Transactions on Antennas and Propagation. 43:270-276
Spherical reflector systems can achieve pattern scanning without rotation of the main reflector through the use of multiple subreflectors that can move. Also, two subreflectors can be shaped to correct for spherical aberration and to control the aper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb0807d73c95931685db37c72bcb008b
https://doi.org/10.1109/8.371996
https://doi.org/10.1109/8.371996
Autor:
W.L. Stutzman, J.D. Laster
Publikováno v:
IEEE Transactions on Antennas and Propagation. 43:1207-1216
One year of copolarized signal data from the OLYMPUS satellite's 12, 20, and 30 GHz beacons were examined for frequency scaling of attenuation. The statistics of the ratios of attenuation in dB for the frequency pairs 30/20, 20/12, and 30/12 GHz comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f1699d45480420e9feb40a1ae8872ca
https://doi.org/10.1109/8.475092
https://doi.org/10.1109/8.475092
Autor:
D.G. Hundt, W.L. Stutzman
Publikováno v:
Journal of Electromagnetic Waves and Applications. 8:221-235
Measurement distance requirements for electrically large, broad beam antennas are investigated in this paper. Design guidelines are developed for determining far-field measurement distances for various pattern types. Results show that while the popul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c42dd4e36447379d85c17d3cf38df09c
https://doi.org/10.1163/156939394x00056
https://doi.org/10.1163/156939394x00056
Publikováno v:
IEEE Transactions on Antennas and Propagation. 41:801-805
Results from an investigation into a microscale diversity scheme for the purpose of mitigating attenuation due to tropospheric scintillations are presented. Data from an experiment using the 20-GHz Olympus satellite beacon were analyzed to evaluate t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbda26b634fe50e7ecd550280c906815
https://doi.org/10.1109/8.250456
https://doi.org/10.1109/8.250456
Autor:
W.L. Stutzman, B. Shen
Publikováno v:
IEEE Transactions on Antennas and Propagation. 41:778-786
It is frequently desirable to scan the main beam of a large antenna system without moving the main aperture structure. Spherical reflectors have excellent potential in this application. However, they are not commonly used because of poor aperture eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6031f4d02bb2bda998fd8b50dc0e0ef7
https://doi.org/10.1109/8.250440
https://doi.org/10.1109/8.250440
Autor:
W.T. Smith, W.L. Stutzman
Publikováno v:
IEEE Transactions on Antennas and Propagation. 40:57-62
Technologies exist for construction of antennas with adaptive surfaces that can compensate for many of the larger distortions caused by thermal and gravitational forces. However, as the frequency and size of the reflectors increase, the subtle surfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adfa543ad2d1d619fa0ae9b5b9fb2ec4
https://doi.org/10.1109/8.123357
https://doi.org/10.1109/8.123357
Autor:
S.H. Steward, W.L. Stutzman
Publikováno v:
IEEE Transactions on Antennas and Propagation. 38:994-1000
In contrast to secondary pattern superposition, where the fields reflected from the main reflector arising from each element are superimposed in the far field of the reflector, the approach presented here sums the primary fields at the reflector surf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5414ad78f833b4e286069ae795274a13
https://doi.org/10.1109/8.55610
https://doi.org/10.1109/8.55610
Publikováno v:
IEEE Transactions on Antennas and Propagation. 38:1035-1038
Two-site diversity gain measurements made with a pair of 11.4 GHz satellite beacon receivers are compared to predictions based on dual-polarized radar reflectivity data and to values calculated from the Hodge model. All three agree closely. Examinati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42a5a75e9c952dfe349639ce05c4a263
https://doi.org/10.1109/8.55614
https://doi.org/10.1109/8.55614
Autor:
D.B. Dunn, W.L. Stutzman
Publikováno v:
The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design System Theory.
The beam efficiency of an antenna is defined as the ratio of the power contained within the main beam or lobe to the total power contained in the antenna pattern. Many analytical and numerical computational approaches exist to compute beam efficiency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64d94dbc2f57d53f014e7c37d2dbec63
https://doi.org/10.1109/ssst.1992.712199
https://doi.org/10.1109/ssst.1992.712199