Xem 1-9 trên 9 kết quả Noise figure
  • This book is about RF system analysis and design at the level that requires an understanding of the interaction between the modules of a system so the ultimate performance can be predicted. It describes concepts that are advanced, that is, beyond those that are more commonly taught, because these are necessary to the understanding of effects encountered in practice. It is about answering questions such as:

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  • What does FIESTA stand for? What’s a bounce point artefact? What’s the equation for a stimulated echo? This book will be an invaluable source of reference for anyone working in the field of magnetic resonance, from the novice academic student to the experienced medical professional. The book brings together more than 800 terms of reference in common usage in the diverse field of MR imaging and spectroscopy. Explanations are amplified with equations, examples and figures, and further references are provided.

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  • Besides the considerations of noise and noise figure, the capabilities of receivers are highly dependant on the type of receiver design. Most receiver designs are trade-offs of several conflicting requirements.

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  • Photoscape là một chương trình đơn giản nhỏ gọn nhưng có đủ những chức năng cơ bản để bạn chỉnh sửa và hoàn thiện hình ảnh của bạn. Photoscape có những tính năng chính sau Viewer: xem hình, quản lý folder hình ảnh, slide show. .• Editor: Frames, Resize, Rotate, Brightness, Color, Contrast, Auto Level, Auto Contrast, Whitebalance, Curves, Sepia, Negative, Sharpen, Blur, Noise Reduction, Vignetting, Bloom, Gradient, Texture, Fisheye, Clipart, Balloon, Text, Figures, Crop, Red Eye Removal, Mosaic .

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  • Increasing the iMEMS Accelerometer’s Output Scale Factor Figure 15 shows the basic connections for using an external buffer amplifier to increase die output scale factor. The output multiplied by the gain of the buffer, which is simply the value of resistor R3 divided by RI. Choose a convenient scale factor, keeping in mind that the buffer pin not only amplifies the signal, but my noise or drift as well. Too much pin can also cause the buffer to saturate and clip the output waveform. Note that the “+” input of the external op amp uses the offset null pin of...

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  • Electromagnetic Compatibility Engineering started out being a third edition to my previous book Noise Reduction Techniques in Electronic Systems, but it turned out to be much more than that, hence, the title change. Nine of the original twelve chapters were completely rewritten. In addition, there are six new chapters, plus two new appendices, with over 600 pages of new and revised material (including 342 new figures).

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  • Interference suppression and CDMA overlay 7.1 NARROWBAND INTERFERENCE SUPPRESSION To get an initial insight into the problem, we assume that the received signal after frequency down conversion has the form x(i) = b · c(i) + J (i) + n(i) (7.1) where at sampling instant iTc , b is data, c(i) is the code, J (i) is the narrowband interference, Tc is the chip interval and n(i) is the Gaussian noise. The receiver structure is shown in Figure 7.1. For the two types of filters, from Figures 7.2 and 7.3 we define vectors of input samples and filter taps as follows: Xi1 =...

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  • Linear System Theory In this chapter, the fundamental relationships between the input and output of a linear time invariant system, as illustrated in Figure 8.1, are detailed. Specifically, the relationships between the input and output time signals, Fourier transforms and power spectral densities, are established. Such relationships are fundamental to many aspects of system theory, including analysis of noise in linear systems, and low noise amplifier design.

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  • Noise is a key concern for people living near transport infrastructure, and can be damaging to both health and general well-being. Although train noise is already much less intrusive than noise from air and road traffi c (see Figure 5), the railway sector wants to reduce noise even further, especially that caused by freight trains. Many of these trains still use loud cast-iron brake blocks, unlike passenger trains, most of which use disc brakes.

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