Tomographic imaging of electrically large objects in 2-D and 3-D environments using ultra-wideband (UWB) sensor arrays is described. Object cross-section electric properties is the most difficult part to model.Different industrial, medical, and security applications use microwave signals to penetrate and sense light opaque materials with reasonable spatial resolution.Increased level of spatial resolution and materialelectrical parameter measurement accuracy of Wideband signals, such as those produced with ultra-wideband (UWB) systems makes it ....etc

[:=Read Full Message Here=:]

Short Range Personal Radar
INTRODUCTION:
The idea to create a type of close proximity radar system came from a student in one of my classes. We went ahead and decided to streamline the idea into the course as one of the projects we'd build. After a week or two of prep time we finally agreed on the project setup & parts that we'd use. This is not meant to be an advanced project, thusly the difficulty is set at medium. Below is an example of what short range personal radar could be used for. It's meant to be a bit comical ....etc

[:=Read Full Message Here=:]

Point range trees ....etc

[:=Read Full Message Here=:]

ABSTRACT”
In this Modern era, image Transmission and processing plays a major role. It would not be possible to retrieve information from satellite and medical images without the help of Image processing techniques. Image Enhancement is the art of examining images for identifying objects and judging their significance. The proposed work uses the concept of GA to find the image with best Signal to noise Ratio (SNR). The basic GA does not require extensive knowledge of the search space, such as likely solution bounds or functional derivat ....etc

[:=Read Full Message Here=:]

Abstract

We investigate whether, and to what extent, the physical phenomenon of long-lifetime resonant electromagnetic states with localized slowly-evanescent field patterns can be used to transfer energy efficiently over non-negligible distances, even in the presence of extraneous environmental objects. Via detailed theoretical and numerical analyses of typical real-world model-situations and realistic material parameters, we establish that such a non-radiative scheme can lead to ‘‘strong coupling’’ between two medium-range ....etc

[:=Read Full Message Here=:]

An Implementation of Fast-Locking and Wide-Range Reversible SAR DLL
Seminar By:
Arun Das M
S7 AEI
College Of Engineering, Trivandrum
2007-11 batch




Contents
Introduction
Delay Locked Loop
Proposed Reversible SAR
RSAR Lock-in Strategy
Architecture of RSAR DLL
1. 11-Bit RSAR controller
2. Control-Bit Selection Circuit
3. DCDL
4. Timing Controller
Implementation & Testing
Conclusion
References

Introduction
This brief proposes a novel ....etc

[:=Read Full Message Here=:]

abstract
This system uses RF transmission technology. The RF transceiver module which I use has a range up to 100 metres in ideal conditions. This module can transmit and receive 4-bit parallel data with or without 8 address bits using a specific encoder and decoder ICâ„¢s. Another module can be designed such that it can transmit and receive 8-bit parallel data with or without 10 address bits using a specific encoder and decoder ICâ„¢s. The advantage of having the address bits is that message transfer can be made secure.
8-bit ....etc

[:=Read Full Message Here=:]

Submitted by
SURENDRA JALU


WIDE RANGE BAND PASS FILTER
DESCRIPTION:
Third-Order Wideband Bandpass Filter
This circuit demonstrates the operation and characteristics of a wideband bandpass filter, constructed by cascading a second-order low-pass and a high-pass filter. As a result, a 300 Hz to 3 kHz bandpass voice filter is formed.
Experiments:
Set the function generator to 1 kHz and the oscilloscope's time base to 0.2 ms/DIV. Increase the input frequency, about 1 kHz at a time up to 4 kHz, constantl ....etc

[:=Read Full Message Here=:]

The main goal of this project is to design and develop a short range intelligent digital radio wireless hub. And this hub must be able communicate between adjacent buildings on the campus using digital transmitter and receiver modules(Easy-Radio style). It also must have some interfacing capability like four LEDs for output and four digital inputs, a local USB interface and also mesh interconnection capability. For example,messages could be passed from hub to hub to provide bi-directional communication between them.
Key areas of this project ....etc

[:=Read Full Message Here=:]

different antennas have been developed and investigated for RKE (Remote Keyless Entry) and related automotive applications. These antennas include small printed-on-dielectric passive and active, printed-on glass, and whip-splitter types. Key antenna parameters-including size, performance, antenna shape-are proposed, investigated,The characteristics of small antennas taking into account the often significant effect of the cable length and direction position have also been investigated and are presented; solutions are also presented that eliminat ....etc

[:=Read Full Message Here=:]