Zobrazeno 1 - 10
of 168
pro vyhledávání: '"W.V.T. Rusch"'
Autor:
En-Yuan Sun, W.V.T. Rusch
Publikováno v:
IEEE Transactions on Antennas and Propagation. 42:412-417
The authors treat the "entire-tangent" representation of a time-domain electric-field integral equation (TDEFIE) for solving transient scattering problems involving perfectly conducting (PEC) bodies of revolution (BOR). This entire-tangent TDEFIE red
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::171cd7d61f732b914d835d2478706262
https://doi.org/10.1109/8.280730
https://doi.org/10.1109/8.280730
Autor:
En-Yuan Sun, W.V.T. Rusch
Publikováno v:
IEEE Transactions on Antennas and Propagation. 42:9-15
The authors extend the concept of the frequency-domain physical-optics approximation to the time domain, and use it to determine some significant properties of large reflector antennas. When this method is used to determine the equivalent surface-cur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e95922e04045c0f33d5b169087afc373
https://doi.org/10.1109/8.272295
https://doi.org/10.1109/8.272295
Autor:
Aluizio Prata, W.V.T. Rusch
Publikováno v:
Applied optics. 28(4)
A numerically efficient algorithm for expanding a function in a series of Zernike polynomials is presented. The algorithm evaluates the expansion coefficients through the standard 2-D integration formula derived from the Zernike polynomials’ orthog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23c947b095331e0d91b3b410856f4dd2
https://pubmed.ncbi.nlm.nih.gov/20548554
https://pubmed.ncbi.nlm.nih.gov/20548554
Autor:
W.V.T. Rusch
Publikováno v:
Proceedings of the IEEE. 80:113-126
Modern reflector theory and practice, with emphasis on the recent past are reviewed. Included are a brief historical review and performance definitions for the nonspecialist. Special sections are devoted to shaped multiple reflectors, reflector surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::279976a64e6c4eb28983b5b315cc8644
https://doi.org/10.1109/5.119571
https://doi.org/10.1109/5.119571
Autor:
W.V.T. Rusch, M.R. Barclay
Publikováno v:
IEEE Transactions on Antennas and Propagation. 40:1096-1099
A procedure is presented for the synthesis of coated axially symmetric reflector antennas to provide specified far-field radiation patterns. The technique stems from ray tracing from the feed to the aperture plane via reflection from the reflector su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12af26562b5a728b08ebbb54dd010b2c
https://doi.org/10.1109/8.166536
https://doi.org/10.1109/8.166536
Publikováno v:
IEEE Transactions on Antennas and Propagation. 39:774-779
Numerical calculations have been carried out and the beam squint for circular polarized excitation has been measured using a 100 m telescope. The telescope was operated in the Gregorian mode, where the equivalent focal length equals 387.5 m. The feed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e059487c76b0a3a3fe28a39e5f5ce8df
https://doi.org/10.1109/8.86875
https://doi.org/10.1109/8.86875
Autor:
E.-Y. Sun, W.V.T. Rusch
Publikováno v:
IEEE Transactions on Antennas and Propagation. 39:556-559
An efficient series representation is derived for I/sub pab/, a quadratic phase integral commonly encountered in aperture-antenna theory. The accuracy and efficiency of the series formula relative to ordinary numerical integration are discussed. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5367f5be0931be582e0bfb9312cfb723
https://doi.org/10.1109/8.81472
https://doi.org/10.1109/8.81472
Autor:
M.R. Barclay, W.V.T. Rusch
Publikováno v:
IEEE Transactions on Antennas and Propagation. 39:491-496
The moment-method technique utilizing entire domain basis functions is applied to the analysis of large, axially symmetric reflector antennas. The electric surface current is modeled as a finite series of sinusoids whose domain consists of the entire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37b2efcd25fb6c8aa60b1fe3db4905a3
https://doi.org/10.1109/8.81462
https://doi.org/10.1109/8.81462
Autor:
D.C. Jenn, W.V.T. Rusch
Publikováno v:
IEEE Transactions on Antennas and Propagation. 39:1372-1375
A procedure is presented for determining the resistivity of a paraboloid's reflecting surface to obtain a desired sidelobe level. The only requirement is that the normalized aperture distribution due to the feed be greater than the corresponding norm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d60a6b9177c48f5af29247816020d61a
https://doi.org/10.1109/8.99046
https://doi.org/10.1109/8.99046
Publikováno v:
IEEE Transactions on Antennas and Propagation. 38:1141-1149
The equivalent paraboloid is derived for classical offset Cassegrain and Gregorian antennas. The important practical case of systems with circular exit apertures is discussed in detail, and a condition for a symmetric equivalent paraboloid is derived
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24f32a5a05301f1249c0b66bb6d4b309
https://doi.org/10.1109/8.56949
https://doi.org/10.1109/8.56949