A R Khan - Academia.edu (original) (raw)
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Papers by A R Khan
IEEE Transactions on Microwave Theory and Techniques, 2000
This paper describes a dual-polarized rectenna capable of producing a 50-V output voltage that ca... more This paper describes a dual-polarized rectenna capable of producing a 50-V output voltage that can be used for driving mechanical actuators. This study demonstrates a circuit topology that allows the output of multiple rectenna elements to be combined in order to step up the output voltage. In this paper, an independent rectifying circuit is used for each of two orthogonal polarizations. By proper combination, the output voltage is doubled over that of the single polarization case. Such panels are being explored for use on the next-generation space telescope to eliminate wiring between actuators and provide for true mechanical isolation.
Page 1. Income and Inequality in China: Composition, Distribution and Growth of Household Income,... more Page 1. Income and Inequality in China: Composition, Distribution and Growth of Household Income, 1988 to 1995* Azizur Rahman Khan and Carl Riskin The first comprehensive effort to estimate household income1 and its ...
Chemical Engineering Science, 1990
A new method is given for the calculation of the drag force, pressure gradient and friction facto... more A new method is given for the calculation of the drag force, pressure gradient and friction factor for sedimenting suspensions and fluidised beds of uniform spherical particles in liquids. A comparison is made with previous methods of correlation. In addition, the relationship between the various drag coefficients for particles in concentrated suspensions is clarified. The importance of the particle-to-vessel diameter ratio in determining the value of the drag coefficient is established.
Chemical Engineering Communications, 1989
The published correlations for the velocity-voidage relationship observed during fluidization and... more The published correlations for the velocity-voidage relationship observed during fluidization and sedimentation of uniformly sized spherical particles in solid-liquid systems are compared with published experimental results. It is found that the expression suggested by ...
Chemical Engineering Communications, 1987
Chem. Eng. Comm. 1987, vol62, pp. 135-150 Photocopying permitted by license only 0 1987 Gordon an... more Chem. Eng. Comm. 1987, vol62, pp. 135-150 Photocopying permitted by license only 0 1987 Gordon and Breach Science Publishers SA Printed in the United States of America ... THE RESISTANCE TO MOTION OF A SOLID SPHERE IN A FLUID ... Department of Chemical Engineering, ...
IEEE Transactions on Microwave Theory and Techniques, 2000
This paper describes a dual-polarized rectenna capable of producing a 50-V output voltage that ca... more This paper describes a dual-polarized rectenna capable of producing a 50-V output voltage that can be used for driving mechanical actuators. This study demonstrates a circuit topology that allows the output of multiple rectenna elements to be combined in order to step up the output voltage. In this paper, an independent rectifying circuit is used for each of two orthogonal polarizations. By proper combination, the output voltage is doubled over that of the single polarization case. Such panels are being explored for use on the next-generation space telescope to eliminate wiring between actuators and provide for true mechanical isolation.
Page 1. Income and Inequality in China: Composition, Distribution and Growth of Household Income,... more Page 1. Income and Inequality in China: Composition, Distribution and Growth of Household Income, 1988 to 1995* Azizur Rahman Khan and Carl Riskin The first comprehensive effort to estimate household income1 and its ...
Chemical Engineering Science, 1990
A new method is given for the calculation of the drag force, pressure gradient and friction facto... more A new method is given for the calculation of the drag force, pressure gradient and friction factor for sedimenting suspensions and fluidised beds of uniform spherical particles in liquids. A comparison is made with previous methods of correlation. In addition, the relationship between the various drag coefficients for particles in concentrated suspensions is clarified. The importance of the particle-to-vessel diameter ratio in determining the value of the drag coefficient is established.
Chemical Engineering Communications, 1989
The published correlations for the velocity-voidage relationship observed during fluidization and... more The published correlations for the velocity-voidage relationship observed during fluidization and sedimentation of uniformly sized spherical particles in solid-liquid systems are compared with published experimental results. It is found that the expression suggested by ...
Chemical Engineering Communications, 1987
Chem. Eng. Comm. 1987, vol62, pp. 135-150 Photocopying permitted by license only 0 1987 Gordon an... more Chem. Eng. Comm. 1987, vol62, pp. 135-150 Photocopying permitted by license only 0 1987 Gordon and Breach Science Publishers SA Printed in the United States of America ... THE RESISTANCE TO MOTION OF A SOLID SPHERE IN A FLUID ... Department of Chemical Engineering, ...