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6.1 Digital Transmission Systems
6.1 Digital Transmission Systems

... • A continuous representation of a continuous event. • An analog connection is one which continuously varies in amplitude and frequency. • The amplitude of the signal is representation of its loudness while the frequency represents its tone or pitch. ...
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... Ungrounded sources occur in instrumentation as a requirement for safety or performance. The input circuitry of an instrument has a finite input current requirement. This current must return to output ground. If this path is not provided, the instrument may appear to work but in reality it is functio ...
Analog Devices Welcomes Hittite Microwave Corporation
Analog Devices Welcomes Hittite Microwave Corporation

... frequency performance. By using the same technique of floating the ground off chip, a negative bias attenuator can be made into a positive bias attenuator. Furthermore, since the capacitance is off chip it will be possible to make adjustments to achieve the desired frequency response. Since GaAs FET ...
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... by UL and TUV for use across the line in mains voltage applications. C: Component 2220JA250472KXTB16, this component is a Y2/X1 rated safety capacitor certified by UL and TUV for use between live and ground in mains voltage applications. DC side D: Tank capacitor, usually a high capacitance value fo ...
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... supply voltage for the separate analog and digital sections of the device and an ADP3303 ultrahigh precision regulator that acts as a supply to the on-board universal serial bus controller, which interfaces to the AD5933. The user can power the entire circuitry from the USB port of a computer. The e ...
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BASIC ELEMENTS AND COMPONENTS OF AN AMPLIFIER

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Communication and Sensing Circuits on Cellulose

... 3.2. Oscillators Oscillators are pervasive circuits that can be used to transmit RF signals, to convert their frequency (in conjunction with mixers) or to send identification information (RFID). For these reasons they are one of the most important building blocks of a communication system hardware. ...
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PENAPIS LULUS RUANG GELOMBANG MIKRO

... A bandpass filter is an electronic device or circuit that allows signals between two specific frequencies to pass, but that discriminates against signals at other frequencies. Some bandpass filters require an external source of power and employ active components such as transistors and integrated ci ...
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AC GUI Stand Alone

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TR41.9.2-03-11-034-MR2-GeneralInformation

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Effects of Bonding and Packaging on Circuit Operation Speed

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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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