Results 251 to 260 of about 53,982 (285)
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Dual-polarized broadband dipole
IEEE Antennas and Wireless Propagation Letters, 2003A dual-polarized, broadband antenna made up of two single-polarized dipoles is presented. The antenna is mounted on a ground plane to produce a low-profile structure. Two fractal-like elements are used, but a very wide bandwidth is only achieved by making adjustments to the shape to reduce the coupling between the two polarizations.
J. Perruisseau-Carrier +2 more
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Jointly Shaped Dual Polarization Systems
Optical Fiber Communication Conference (OFC) 2021, 2021We present a probabilistic shaping algorithm whereby both polarization streams of a dual-polarized system are shaped together. The proposed method offers 0.2-0.92 dB gains over existing shaping schemes for the same block-length.
Mrinmoy Jana +3 more
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IEEE Journal of Quantum Electronics, 1977
Simultaneous laser oscillation of four nondegenerate polarization and propagation direction eigenstates of a single TEM 00 mode was observed in a ring laser cavity. The observed polarization and frequency properties of the ring laser were analyzed in terms of the Jones matrix calculus.
V. Sanders, R. Kiehn
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Simultaneous laser oscillation of four nondegenerate polarization and propagation direction eigenstates of a single TEM 00 mode was observed in a ring laser cavity. The observed polarization and frequency properties of the ring laser were analyzed in terms of the Jones matrix calculus.
V. Sanders, R. Kiehn
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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
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Dual-polarization mode-locked Nd:YAG laser
Optics Letters, 2012A mode-locked solid-state laser containing a birefringent element is shown to emit synchronously two frequency combs associated to the two polarization eigenstates of the cavity. An analytical model predicts the polarization evolution of the pulse train, which is determined by the adjustable intracavity birefringence. Experiments realized with a Nd:YAG
Thévenin, Jérémie +2 more
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Spatial modulation with dual-polarized antennas
2015 IEEE International Conference on Communications (ICC), 2015In this work, multiple-input multiple-output (MIMO) communication employing spatial modulation (SM) is considered with dual-polarized antennas over correlated Rayleigh and Rician channels. A general average bit-error probability (ABEP) upper bounding framework is presented for the dual-polarized SM-MIMO systems.
Zafari, G., Koca, Mutlu, Sari, Hikmet
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Mainbelt Asteroids: Dual-Polarization Radar Observations
Science, 1985Observations of 20 asteroids in the main belt between Mars and Jupiter provide information about the nature of these objects' surfaces at centimeter-to-kilometer scales. At least one asteroid (Pallas) is extremely smooth at centimeter-to-meter scales.
S J, Ostro, D B, Campbell, I I, Shapiro
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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.
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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
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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
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FPIR: The dual polarization antenna
2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013Full Polarization Interferometric Radiometer (FPIR) is concept of one dimensional synthetic radiometer. This paper introduces the design of the FPIR antenna. A novel linear array antenna is described with emphasis on the simulation of the antenna pattern, design of the stripline feeding network and simulation of the polarimetric isolation.
Jingye Yan +6 more
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