Results 271 to 280 of about 94,464 (307)
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Miniaturization of an UWB Dual-Polarized Antenna
2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB), 2015For some UWB applications (short range radars,medical imaging), it has been shown that the use of an antennathat supports a dual-polarization can enhance their accuracy.However, the size of classic UWB dual-polarized antennas makestheir integration into small devices difficult.
Lorho, Nina +5 more
openaire +1 more source
2009
This invention relates to an antenna (1 ) of the type comprising a casing (3) having a reflector (5) defining a slot (7) and a PCB board (9) carrying a plurality of radiating elements (10) and a feed harness (11 ). The radiating elements and the feed harness form a dual polarized antenna pattern. The PCB is mounted in the casing and protrudes outwardly
BROWNE JAMES +3 more
openaire +2 more sources
This invention relates to an antenna (1 ) of the type comprising a casing (3) having a reflector (5) defining a slot (7) and a PCB board (9) carrying a plurality of radiating elements (10) and a feed harness (11 ). The radiating elements and the feed harness form a dual polarized antenna pattern. The PCB is mounted in the casing and protrudes outwardly
BROWNE JAMES +3 more
openaire +2 more sources
1982
This paper presents a new fiber optic gyro configuration that is designed to provide independence from the principal bias errors due to the phase modulator. The configuration operates with optimum Π/2 phase shift for gyro sensitivity, 2x increase in scale factor and has been experimentally shown to provide a lOx improvement in immunity to modulator ...
J. G. Hanse, G. L. Mitchell, P. E. Bjork
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This paper presents a new fiber optic gyro configuration that is designed to provide independence from the principal bias errors due to the phase modulator. The configuration operates with optimum Π/2 phase shift for gyro sensitivity, 2x increase in scale factor and has been experimentally shown to provide a lOx improvement in immunity to modulator ...
J. G. Hanse, G. L. Mitchell, P. E. Bjork
openaire +1 more source
Dual band dual polarized antenna for SAR
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015A novel antenna consisting of a C band dual polarized waveguide slot antenna and an L band slot antenna with shared apertures is presented. The antenna meets the requirement of a dual band SAR application.
Wei Wang +4 more
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Dual polarized dual‐band MIMO antenna
Microwave and Optical Technology Letters, 2016ABSTRACTFor multiple‐input‐multiple‐output (MIMO) system a dual‐band dual‐polarized antenna is presented. The antenna which is presented in this thesis produces a linearly polarized and circularly polarized radiation fields. The measured return losses of −18.89 and −21.86 dB are achieved at 2.43 GHz and 3.22 GHz, respectively.
Rekha Sharma, Usha Kiran Kommuri
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Dual-band dual polarization microstrip antenna
IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450), 2004This paper describes the development of a multilayer dual-band dual-polarized antenna operating at L and C bands with a common aperture. Unlike earlier approaches, slot coupled patches are employed at both bands to reach cross-polarization suppression better than 30 dB.
A. Vallecchi, G.B. Gentili, M. Calamia
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A dual-polarization rain profiling algorithm
IEEE Transactions on Geoscience and Remote Sensing, 2006A new attenuation correction algorithm based on profiles of reflectivity, differential reflectivity, and differential propagation phase shift is presented. A solution for specific attenuation retrieval in rain medium is proposed, which solves the integral equations for reflectivity and differential reflectivity with cumulative differential propagation ...
Sanghun Lim, Venkatachalam Chandrasekar
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MODELLING OF DUAL-POLARIZATION INTERFEROMETRY IN STELLARATORS
Problems of Atomic Science and Technology, 2019The dual polarization interferometers have been designed and applied in the Uragan-3M and Uragan-2M torsa-trons. However, an extensive modeling of microwave propagation through the plasma in the sheared magnetic field should be provided for correct interpretation of data.
Filippov, V., Grekov, D., Azarenkov, N.
openaire +2 more sources
2016
In this chapter, we study dual polar spaces. These are certain point-line geometries that are closely related to polar spaces. We study several properties of these geometries and describe several families. Dual polar spaces are examples of near polygons.
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In this chapter, we study dual polar spaces. These are certain point-line geometries that are closely related to polar spaces. We study several properties of these geometries and describe several families. Dual polar spaces are examples of near polygons.
openaire +1 more source
A dual-band dual-polarized radar antenna
2001 CIE International Conference on Radar Proceedings (Cat No.01TH8559), 2002In a dynamic radar cross section (RCS) measurement system, dual-band and dual-polarization performance is generally required by the antenna system and polarization performance in the two bands should be the same. Some problems including dual-band coplane, dual-band composed feed and polarized conversion are produced.
null Yang Bochao, null Huang Yong
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