A method to design multiband RF pulses for magnetic resonance imaging is described. The method is based on the Shinnar-Le Roux transform and involves a phase correction that provides control over the phase of the excited bands. The theory behind the method and this phase correction is outlined. The method is demonstrated with the design of RF pulses for Hadamard encoding and Haar wavelet encodi...

In this paper, a BSIMSOI RF gate resistance model for FDSOI MOSFET is introduced and verified. With the addition of the gate resistance model, the RF characteristic of FDSOI MOSFET could be modeled well. Self-heating effect (SHE) will affect RF data fitting significantly. A simple method to extract thermal resistance is proposed.

The medical use of radio frequency (RF) is based on an oscillating electrical current forcing collisions between charged molecules and ions, which are then transformed into heat. RF heating occurs irrespective of chromophore or skin type and is not dependent on selective photothermolysis. RF can be delivered using monopolar, bipolar, and unipolar devices, and each method has theoretical limits ...

In this paper, a novel method for extracting an RF pilot carrier signal in the coherent receiver is presented. The RF carrier is used to mitigate the phase noise influence in n-level PSK and QAM systems. The performance is compared to the use of an (ideal) optically transmitted RF pilot tone. As expected an electronically generated RF carrier provides less efficient phase noise mitigation than ...

In this study we compare the relative merits of Z-cut and X-cut lithium niobate (LN) electrooptic modulators. The finite element method (FEM) has been used to implement a full wave analysis of the two structures and determine the microwave effective index Nm, the characteristic impedance Zc, the microwave losses αc and the half wave voltage VπL, operating at frequency range from 0.1 to 100GHz. ...

We measured diffusing capacities for carbon monoxide (DLCO) and nitric oxide, lung volume, and cardiac output by a rebreathing technique at two alveolar O2 tensions (PAO2) at rest and exercise. Membrane diffusing capacity for CO (DMCO) and VC were estimated from DLCO by the Roughton-Forster (RF) method and also from simultaneous lung diffusing capacity for NO and DLCO measured at one O2 tension...

A time-domain shooting method based coupled device and circuit simulator suitable for accurate simulation of RF circuits is presented. The simulator supports accurate numerical models for diodes, BJTs, and MOSFETs. These combined with the accelerated steady-state method allow accurate and efficient steady-state simulation of RF circuits.

This study presents the simulation, fabrication and characterization ofmicromechanical radio frequency (RF) switch with micro inductors. The inductors areemployed to enhance the characteristic of the RF switch. An equivalent circuit model isdeveloped to simulate the performance of the RF switch. The behaviors of themicromechanical RF switch are simulated by the finite element method software,Co...

With the globalization of the integrated circuit (IC) design flow of chip fabrication, intellectual property (IP) piracy is becoming the main security threat. While most of the protection methods are dedicated for digital circuits, we are trying to protect radio-frequency (RF) designs. For the first time, we applied the split manufacturing method in RF circuit protection. Three different implem...