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A novel birdcage type Radio Frequency (RF) receiver coil sensor with passive type detuning circuits integrated on the end-rings of the coil sensor has been implemented. A simulation model of the RF receiver coil sensor with the passive type detuning circuits has also been proposed. The simulation model completely explains the working principle of the RF receiver coil sensor with the passive type detuning...
A novel double-tuned radio-frequency (RF) receiver coil for use in magnetic resonance imaging (MRI) systems has been demonstrated based on a birdcage-type circuit. The receiver coil utilises the end-ring current as well as the leg current of the birdcage-type circuit to detect the nuclear magnetic resonance (NMR) signals of different elements simultaneously. It was designed to detect the NMR signals...
In this paper we are demonstrating a novel method of designing and implementing a modified birdcage type Radio Frequency (RF) coil for small animal Nuclear Magnetic Resonance (NMR) imaging. This RF coil is basically a band pass type birdcage coil which is specifically designed to perform the whole body NMR imaging of small animal at 1.5T MRI systems. The designed RF coil contains the saw tooth shaped...
A simple transmission power control technique has been proposed and demonstrated to realize an energy efficient sensor network over existing CATV infrastructures. The sensor network has been implemented by using the wasted bandwidth of the coaxial cables of a conventional CATV network and supports automatic transmission power control to enhance the network lifetime. The transmission power control...
The CATV infrastructure has been deployed in most houses and buildings and the coaxial cables of the CATV infrastructure usually can provide sufficient bandwidth to accommodate other services as well as CATV service. We have proposed and demonstrated a novel remotely powered sensor network over the existing CATV infrastructure composed of coaxial cables, splitters and so on. The proposed sensor network...
A novel sensor network by using the coaxial cable infrastructure of the CATV network has been demonstrated. The sensor network has been implemented by using the wasted bandwidth of the coaxial cable (900-MHz band) of the CATV network without any change of the existing infrastructure. We have confirmed the performance of the sensor network by measuring the packet error rate (PER) for various data rates...
Radio frequency coil is the core component used in the detection of nuclear magnetic resonance signal. Usually the radio frequency coil is designed for operation on a specific magnetic field strength based magnetic resonance imaging system. This paper describes the method of implementing a modified birdcage type receive only radio frequency coil which has the ability to detect the nuclear magnetic...
We have derived an analytic expression for the scalability of the video-overlay system in the FTTH network and shows that the scalability strongly depends on both the optical amplifier noise and the configuration of the distribution network.
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