presented by;
Ajaya Kumar Kavala


Technique for measuring the Dielectric constant using open ended coaxial cable in the microwave frequency region
Introduction of Dielectrics
• Dielectric is an entity ,in which equal positive and negative charges separated by equal small distance.
• In which each molecule has permanent dipole moment P
• This type of materials are known as polar materials
• Different molecules has different different directions of the dipole moment.
• In Non polar materials ,The ....etc

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An antenna is defined by Oxford Dictionary as ? a usually metallic device for radiating or receiving radio waves ?. The IEEE Standard Definitions of terms for Antennas ( IEEE Std 145-1973) defines the antenna or aerial as ? a means for radiating or receiving radio waves ?. In other words the antenna is the transitional structure between free-space and a guiding device. The guiding device or transmission line may take the form of a coaxial line or a hollow pipe (wave guide) and it is used to transport electromagnetic energy from the transmitting ....etc

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ABSTRACT

Low-k dielectrics are the very latest path breaking development in the field of Integrated Electronics. It is well on its way replacing the Al / SiO2 interconnects with the help of copper in CMOS fabrication of IC Chips. The CMOS technology has an in-built coupling capacitance which increases the time delay, thereby reducing associated processing speeds. This was compensated by reducing the thickness of the Al / SiO2 interconnects. There is a limit to the reduction in t ....etc

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An antenna is defined by Oxford Dictionary as “ a usually metallic device for radiating or receiving radio waves “. The IEEE Standard Definitions of terms for Antennas ( IEEE Std 145-1973) defines the antenna or aerial as “ a means for radiating or receiving radio waves ”. In other words the antenna is the transitional structure between free-space and a guiding device. The guiding device or transmission line may take the form of a coaxial line or a hollow pipe (wave guide) and it is used to transport electromagnetic energy from the tr ....etc

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ABSTRACT
To achieve desirable biomimetic motion, actuators must be able to reproduce the important features of natural
muscle such as power, stress, strain, speed of response, efficiency, and controllability. It is a mistake, however, to
consider muscle as only an energy output device. Muscle is multifunctional. In locomotion, muscle often acts as an
energy absorber, variable-stiffness suspension element, or position sensor, for example. Electroactive polymer
technologies based on the electric-field-induced deformation of polymer d ....etc

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A dense gas is defined as any gas whose density is greater than the density of the ambient air through which it is being dispersed. This result can be due to a gas with a molecular weight greater than that of air or a gas with a low temperature due to auto-refrigeration during release, or other processes. The importance of dense gas dispersion has been recognized for some time. Early field experiments (Van Ulden, 1974; Puttock et al., 1982; Koopman et al., 1984) have confirmed that the mechanisms of dense gas dispersion differ markedly from neu ....etc

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I AM MISS NIBEDITA DOING ENGINEERING WANT TO KNOW ABOUT THE TOPIC DIELECTRIC RESONANT ANTENNA. I WANT THE ABSTRACT AND FULL REPORT FOR SEMINAR.

THANKING YOU
NIBEDITA ....etc

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Ajaya Kumar Kavala
Research Scholar
Department of Physics
IIT Patna


Introduction of Dielectrics

Dielectric is an entity ,in which equal positive and negative charges separated by equal small distance.
In which each molecule has permanent dipole moment P
This type of materials are known as polar materials
Different molecules has different different directions of the dipole moment.
In Non polar materials ,The centre of the positive charge distribu ....etc

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The High frequency attenuation in shielded distribution cable has been extensively studied. But in the case of solid dielectric cable, this has not been done. A solid dielectric cable has a bit more complex structure including the semiconducting “bedding” layers and a moisture barrier.high frequency loss is created by these sources.The purpose of these bedding layers is to seal the cable against moisture ingress and also accomodate for the thermal expansion of the cable. The cables studied here are the ones with a corrugated copper sheat ....etc

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8) Alpha Partial Dispersion

MAIN PURPOSE:
* Ernest Rutherford was a New Zealand born scientist. In 1909, he did some experiment using gold fails and alpha particles. Alpha particles consist of two protons and neutrons bonded to each other, since they have no electrons, they are positively charged with two charge units. View the configuration of the experiment and understand the Rutherford experiment.
* There is a source of fast moving alpha particles that have a considerable amount of energy. The alpha particle streak is dire ....etc

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