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Chapter 2 - Portal UniMAP
Chapter 2 - Portal UniMAP

... form of a crystal filter designed to provide the exact selectivity required by a given application. – SAW filters are normally used at very high radio frequencies where selectivity is difficult to obtain. – They are widely used in modern TV receivers, radar receivers, wireless LANs, and cell phones. ...
AVL58 5.8G Video Link User Manual
AVL58 5.8G Video Link User Manual

... The AVL58 includes both Video Link Transmitter (TX) and Video Link Receiver (RX), working in the ISM frequency band of 5.8GHz (5645- 5945MHz MHz). Analogue modulated video signals are sent wirelessly by the TX module to the RX module, and then the video signal will be demodulated and sent to a displ ...
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IC NOTES PPT

... Monostable multivibrator is one which generates a single pulse of specified duration in response to each external trigger signal. It has only one stable state. Application of a trigger causes a change to the quasistable state.An external trigger signal generated due to charging and discharging of th ...
Chapter 4 (Part 2) - Digital Transmission
Chapter 4 (Part 2) - Digital Transmission

RFMD2081 45MHz TO 2700MHz IQ MODULATOR WITH SYNTHESIZER/VCO Features
RFMD2081 45MHz TO 2700MHz IQ MODULATOR WITH SYNTHESIZER/VCO Features

... delivers ultra-fine step sizes and low spurious products. The synthesizer/VCO, combined with an external loop filter, allows the user to generate local oscillator (LO) signals from 90MHz to 5400MHz. The LO signal is buffered and routed to a high accuracy quadrature divider (/2) that drives the balan ...
IRS2980 Press Presentation
IRS2980 Press Presentation

... • CRAMP determines the PWM frequency • PWM direct input is possible through ADIM (replace CRAMP with resistor to set threshold) ...
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... to the HDMI port. The video noise in the details of SD video is removed to produce a clear picture. Now you can enjoy not only your DVDs but also your VCR tapes and games with much greater clarity and detail. Analogue to HDMI up-conversion, I/P converter and scaler on HDMI to HDMI Analogue video inp ...
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A New Zero-Field Paramagnetic Resonance Spectrometer

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... The integrated receiver included a wide-band AGC amplifier. The first stage was a variable-gain stage in the Gilbert-cell configuration as shown in Fig. 2. The second and third gain stages were dc-coupled emitter-coupled pairs with emitter-follower buffers, with the second stage employing transimped ...
Signal Encoding Techniques
Signal Encoding Techniques

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... of a microcontroller. To reduce spurious components in the output spectrum, the sharp edges can be reduced with a series RC. For 4.8 MHz output clock, a series 50 W into 10 pF will reduce spurs to < –50 dBc. Defaults on power-up to divide by 16. ...
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Leak Mk1 FM Tuner restoration
Leak Mk1 FM Tuner restoration

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... behavior makes them appear to have some of the properties of particles. In general, however, it is easier to picture electromagnetic radiation in space as horizontal and vertical lines of force oriented at right angles to each other. These lines of force are made up of an electric field (E) and a ma ...
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... signal lines to minimize coupling. Additionally, signal lines connecting the feedback and gain resistors should be short enough so that their associated inductance does not cause high frequency gain errors. Line lengths on the order of less than 5 mm are recommended. If long runs of coaxial cable ar ...
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... insensitivity due to the inherently low loss of fibers, allowing for new types of connectivity and network organization in modern digital systems and data-centers. Wavelength-division multiplexing (WDM) may also be realized to place many data channels on a single optical fiber, thereby increasing th ...
2-Series Graphic Equalizers - HARMAN Professional Solutions
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Linköping University Post Print On-Chip Stimulus Generator for Gain,
Linköping University Post Print On-Chip Stimulus Generator for Gain,

... five-stage configurations (Fig. 4). The VFast and VSlow control signals enable or disable the input differential pair of the dual VCDL to work in either a nine-stage (slow-mode) or fivestage (fast-mode) configuration. All the transistors used in the dual VCDL have a minimum length of 90 nm. The inpu ...
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... – Is it Pulse by Pulse Current Limit? Size of the Part is Too Big for High Density Converters Cost of the Part ...
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... One RF spectrum analyzer with a 100kHz to 3GHz minimum frequency range (HP 8561E) ...
Multivibrator Circuits using the 555 Timer
Multivibrator Circuits using the 555 Timer

... P.2. Monostable multivibrator circuit triggered by sensor The monostable multivibrator shown in Fig. 3 is triggered when the resistance of the sensor S drops to a value that causes the voltage at terminal Trigger to drop under 1/3 Vcc. This can be done by pressing with a finger both contacts of the ...
EMC Rules for Installation
EMC Rules for Installation

... problems is, therefore, also increasing. Many of these problems are directly related to the installation and cabling technique of the installed components. In times when only few PLCs and almost no bus systems were used, the mostly electromechanical components were usually not affected by electromag ...
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... [2] A. Engler, O. Osika: Simulation of Inverter Dominated Minigrids. 2nd European PVHybrid and Mini-Grid Conference, 25./26.09.2003, Kassel ...
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... of the pulse contains many higher frequency components. The number of components and their contribution is determined by the sharpness of the pulse edges. In addition, the MESFETs are nonlinear devices that generate harmonics of the incident signals. The fundamental switching structure filters out s ...
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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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