This paper describes the performance of the Aperture Coupled Microstrip Planar Array in C-band. The basic concept of aperture coupling is to achieve the wide frequency bandwidth & low back radiation. The enhancement of the bandwidth in the present case is achieved by coupling to the microstrip antenna on one substrate from the microstrip line feed on another parallel substrate through an aperture in the ground plane, which separates the two substrates. A design procedure for aperture coupled microstrip antennas based on transmission line model is presented. The novel coaxial to microstrip line transition is devised and implemented to feed the aperture coupled microstrip antenna elements in planar array to achieve the wide impedance and pattern bandwidth. The experimental results of Return loss plot & Radiation pattern for aperture coupled microstrip planar array antenna are presented.
Medical images require proper attention during the information embedding since the information which is to be embedded should not disturb the image quality. The remedy for the distortion caused by embedding data into medical images can be overcome by using lossless data hiding techniques. QR Code are consisting of relevant medical information that can be retrieved easily. In the present, information security become vital asset at the communication services, thereby concealing of information become a dilemma. For this issue, we employ a method known as Steganography in which the data is concealed in a medium like text, image etc., and appears to be normal, without affecting the quality of the hidden medium. Watermarking enables the protection of data format which is embedded with other data format and provides ownership access to the end user in unrecognizable format. Both steganography and watermarking techniques employ greater security to the information which can be embedded within a data format of any type.
Blood group testing is one of the vital tasks in the area of medicine, in which it is very important during emergency situation before victim requires blood transfusion. Presently, the blood tests are conducted manually by laboratory staff members, which is time consuming process in the emergency situations. Blood group identification within shortest possible time without any human error is an important factor and very much essential. Image processing paves a way in determining blood type without human intervention. Images which are captured using high resolution microscopic camera during the blood slide test in the laboratory which are used for blood type evaluation. The image processing techniques which include thresholding and morphological operations are used. The blood image is separated into sample wise and blood type is decided based on the agglutination effects in those sample images. This project facilitates the identification of blood group even by common people who are unaware of the blood typing procedure.
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