Real-time, 3D localization of the prostate for intensity-modulated radiotherapy can be accomplished with passively charged radio frequency transmitters and superconducting quantum interference device (SQUID) magnetometers. The overall system design consists of an external dipole antenna as a power source for charging a microchip implant transmitter and SQUID magnetometers for signal detection. ...

The principle object of this paper is to offer a modified design of Rogowski coil based on its frequency response. The improvement of the integrator circuit for nullifying the phase difference between the waveforms of the measured-current and the corresponding terminal voltage is a further object of this investigation. This paper addresses an accurate, yet more efficient measuring and protect...

Introduction: Preclinical MRI and spectroscopy applications at very high field demand improved shimming capabilities. Our goal is to improve shimming techniques in a 31cm bore 9.4T MR scanner with the development of an optimized high strength dynamic shim system. There are two types of challenges surrounding dynamic shimming: one is shim-shim interactions, and the other is interactions between ...

The separability of a resistor-inductorcapacitor-mutual inductance (RLCM) network is defined in this paper. Some separability, reducibility and controllability (observability) criteria of RLCM networks over ( ) F z are derived. Two illustrative examples are given. Index Term—RLCM Networks, Separability, Reducibility, Controllability

This paper cover the analysis and construction of current to voltage transducer based on Rogowski coil which satisfy the requirements of high-accuracy measurement of AC current (up to 20 A at power supply frequency, with the aiming uncertainty of 100 parts per million). Primary source of ac current uncertainty measured by this type of transducer is nonuniform density of turns which, in case of ...

Mutual inductance is a phenomenon caused by the circulation of the magnetic flux in the core of an electrical machine. It is the result of the effect of the current flowing in one phase on the other phases. In conventional three-phase machines, such an effect has no influence on the electrical behaviour of the device. Although these machines are powered by power inverters, no problem should occ...

Introduction: Clinic hyperpolarized He gas human lung imaging has been widely conducted in recent years. Multi-channel coil designed for human lung parallel imaging has been reported [1] to accelerate the imaging speed. Large asymmetric birdcage coil were also developed to replace the single loop coil for better B1 homogeneity [2]. This work presents a design of a coil system for hyperpolarized...

Wireless power transfer system plays a key role in the present and future days, because of their upgraded comfort safety merits less green-house gas (GHG) emissions, cell phones, laptops electric vehicle charging. In this paper, basic two resonance circuits were analyzed using an inductive wireless (IWPT) system, at 1.5 kW, 120-mm, 85 kHz frequencies. It includes analyzing, designing, comparing...