Wearable electrocardiogram (ECG) is attracting much attention for monitoring heart diseases in healthcare and medical applications. However, an imbalance usually exists between the contact resistances of sensing electrodes, so that a common mode noise caused by external electromagnetic field can be converted into the ECG detection circuit as a differential mode interference voltage. In this stu...

It's not surprisingly when entering this site to get the book. One of the popular books now is the in phase and quadrature imbalance modeling estimation and compensation. You may be confused because you can't find the book in the book store around your city. Commonly, the popular book will be sold quickly. And when you have found the store to buy the book, it will be so hurt when you run out of...

Control of a magnetic bearing device is addressed by parameter varying control. Within the structure of decentralized PID controllers we compare linear interpolation and switching strategies with and without hysteresis. Piecewise LPV decentralized PID controllers are found to be an interesting alternative. Our method exploits the possibility to pre-compute for every parameter value an H∞ optima...

Double) Low-IF receiver architectures avoid the need for expensive image-reject and channel selection filters and so reduce cost. This approach however introduces the need for an accurate in-phase and quadrature version of the first local oscillator. In this document we present a way to digitally measure amplitude and phase imbalances and compensate for them. Simulations show image-reject value...

Marx modulators operated by solid-state switches (e.g. MOSFET, IGBT) offer an alternative to traditional high voltage (HV) modulators for rf power sources. They have the merits of compact size, high-energy efficiency, high reliability, pulse width control and cost reduction. However, Marx modulators need a complex voltage compensation circuit if they are employed in long pulse applications such...

IQ imbalance that is prominent in Decision-directed architecture can cause significant degradation in the performance of wireless communication systems. In this paper, a discussion of a new algorithm that uses both training and data symbols in a decision-directed fashion to jointly estimate and compensate for the effects of the channel and high receiver I/Q imbalance is presented.