Zobrazeno 1 - 10
of 19
pro vyhledávání: '"E.P. Ekelman"'
Publikováno v:
IET Conference Publications.
Methods of doubling the capacity of the Data Collection System (DCS) on NOAA's geosynchronous operational environment satellite (GOES) were compared for cost and user impact. A methodology of comparing cost was developed. The two architectures that r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a3c57a82f9feb543ece0a7e97881b62
https://doi.org/10.1049/cp.2009.1156
https://doi.org/10.1049/cp.2009.1156
Autor:
P.F. Acsadi, O.P. Gupta, C. Sui, D. He, W.J. Brown, M. Peyghaleh, E.P. Ekelman, J. Patel, C.F. du Toit
Publikováno v:
IEEE International Symposium on Phased Array Systems and Technology, 2003..
Paratek Microwave, Inc. developed a multibeam phased array antenna system at 1.8 GHz, suitable for application as a smart GSM base station antenna. The antenna is also capable of handling GPRS and EDGE extensions to the basic GSM system. The antenna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c3202707859b877eff0580d66c43470
https://doi.org/10.1109/past.2003.1256972
https://doi.org/10.1109/past.2003.1256972
Autor:
E.P. Ekelman
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010).
This paper reports on measurements and analysis to resolve discrepancies in Earth station G/T measurements when using radio stars as calibration sources. The radio star flux expressions for Omega, Orion, and Virgo have been investigated to supplement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adfc3172b2b3fc6f61ec4c6ac21a6440
https://doi.org/10.1109/aps.1999.789492
https://doi.org/10.1109/aps.1999.789492
Autor:
B.S. Lee, E.P. Ekelman
Publikováno v:
Digest on Antennas and Propagation Society International Symposium.
To verify predictions and establish a baseline for comparing analytical results and scan performance, an engineering model with offset confocal paraboloids was designed and built. The model was thoroughly tested and compared with analytically calcula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0e82ed8966ed8d690a8a6967090dcd0
https://doi.org/10.1109/aps.1989.135028
https://doi.org/10.1109/aps.1989.135028
Autor:
E.P. Ekelman, C.B. Abler
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 1996 Digest.
Radio stars have been used to measure the gain of large antennas for many years. The straightforward expressions required, and the simple, direct measurements involved have made this method the most accurate available for this class of antennas. Radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e062725d1e07bdf6dee5872db30df28
https://doi.org/10.1109/aps.1996.549568
https://doi.org/10.1109/aps.1996.549568
Publikováno v:
Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.
Phased-array antenna systems are receiving increased attention for satellite applications due to their ability to form multiple beams, to provide flexible beam power-sharing through distributed amplification, and to rapidly reconfigure and reposition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec106414e25b8695ab120f9c7c0709c8
https://doi.org/10.1109/aps.1994.407931
https://doi.org/10.1109/aps.1994.407931
Autor:
Vincent G. Karasack, E.P. Ekelman, D. Pao, M. Ramesh, K. Hersey, C.G. Du Toit, Shuguang Chen, C. Sui, J. Patel
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229).
The antenna presented uses vertical linear polarization and scans from -45/spl deg/ to +45/spl deg/ in the azimuth plane and has a fixed cosecant squared beam in the elevation plane. This paper presents the performance and measurement results for a 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e1b969497e5058b639f189f9950028a
https://doi.org/10.1109/aps.2001.960220
https://doi.org/10.1109/aps.2001.960220
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