Low-Profile Circularly Polarized Rectifying Antenna for Wireless Power Transmission at 5.8 GHz
Abstract
Portable devices operating without batteries aresometimes desired in wireless applications such as RFID (RadioFrequency Identification) and telemetry. A novel circularlypolarized shorted annular ring-slot rectenna (rectifying antenna)on a 0.5 mm thick flexible microwave laminate is proposed for thepowering of these devices. Output dc voltage of 1.3 V and axialratio of 1.5 dB were measured when 32 dBm microwave powerwas transmitted a ....etc

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Indian Instituite Of Technology ? Bombay
IIT Bombay, set up by an Act of Parliament, was established in 1958, at Powai, a northern suburb of Mumbai. Today the Institute is recognised as one of the centres of academic excellence in the country. Over the years, there has been dynamic progress at IIT Bombay in all academic and research activities, and a parallel improvement in facilities and infrastructure, to keep it on par with the best institutions in the world. Institutes in positions of excellence grow with time. The ideas and ideals on whic ....etc

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Abstract

An electromagnetic generator without moving
parts includes a permanent magnet and a magnetic core including first
and second magnetic paths. A first input coil and a first output coil
extend around portions of the first magnetic path, while a second input
coil and a second output coil extend around portions of the second
magnetic path. The input coils are alternatively pulsed to provide
induced current pulses in the output coils. Driving electrical current
through each of the input coils reduces a level of flux from the
per ....etc

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my name is Himansu Bal .I study in +3 final year science .I have math honors so I want a cover page for my seminar ....etc

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Hi am loveneesh i would like to get details on project on moving coil galvanometer ..My friend Justin said project on moving coil galvanometer will be available here ....etc

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ABSTRACT
A method for rapid visual recognition of personal identity is described, based on the failure of statistical test of independence. The most unique phenotypic feature visible in a person?s face is the detailed texture of each eye?s iris: an estimate of its statistical complexity in a sample of the human population reveals variation corresponding to several hundred independent degrees-of-freedom. Morphogenetic randomness in the texture expressed phenotypically in the iris trabeclar meshwork ensures that a test of statistical independenc ....etc

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Photocatalysis is an advanced oxidation process and receiving widespread attention in recent times for completely mineralizing organic contaminants in water and air. As a first part of our study, the parameters (dissolved oxygen, catalyst concentration, and light intensity) influencing intrinsic kinetics of phenol degradation is investigated using immersion-well batch reactor with 6 and 125 W UV-A lamps. At high light intensity, dissolved oxygen concentration in the slurry decides the optimum catalyst loading. At low light intensity comparable ....etc

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SIDEWINDER MISSILE

WHY IT IS CALLED SIDEWINDER MISSILE

The AIM-9 Sidewinder is a heat-seeking, short-range, air-to-air missile carried by fighter aircraft and recently, certain gunship helicopters. It is named after the Sidewinder snake, which also detects its prey via body heat. The Sidewinder was the first truly effective air-to-air missile, widely imitated and copied. Its latest variants remain in active service with many air forces

SMART WEAPONS
Short-range, air-to-air missile.
Missiles like the ....etc

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hello plz send me detail of
Pneumatic Multipurpose Grinding Machine

with bolck ddig, working principal, role model or etc ............................


thanks a lot
your well wisher
Ravi ....etc

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Introduction


Welding using friction as the major resource
No filler material involved
Welds created by,
a) Frictional heating
b) Mechanical deformation

History
Invented by TWI in 1991 in England
28 organizations worldwide use FSW

Friction Welding

Heat from mechanical energy conversion

Linear friction welding
Rotary friction welding
Material Suitability

Copper and its alloys
Lead
Titanium and its alloys
Magnesium alloys
Zinc
Plastics
Mild steel
....etc

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An automotive AM/FM hidden antenna using the slot between the body of the automobile and a metal solar heat-reduction film in the front windshield is described. Such solar heat-reduction metal films are becoming common and thus represent an opportunity to incorporate an antenna at only marginal cost. The radio frequency (RF) input impedance and gain patterns are described, and techniques for impedance matching are shown. ,Theoretical and experimental antenna patterns are compared in this seminars,The application of this mobile system to the me ....etc

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