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Computation of Eddy Current Signals and Quantitative Inversion
Computation of Eddy Current Signals and Quantitative Inversion

Ethernet Switch FM4224/ Intel  FM4112 24-Port 10G Ethernet L2
Ethernet Switch FM4224/ Intel FM4112 24-Port 10G Ethernet L2

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On-Chip Techniques for Electromagnetic Interference (EMI)
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full text
full text

... BiCMOS technology. Fig. 4 shows the die micrograph, with the data path running from bottom to top. The total chip area is 2200 µm × 1200 µm, determined by the number of I/O pads ...
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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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