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AM radio limits
AM radio limits

... outputs. An ordinary monaural receiver tuned to a stereo signal would produce only the (L + R) signal, since all frequencies above 15 kHz are removed by filtering, and no demodulator circuitry is present. Thus the stereo signal is compatible with the monaural receivers. ...
A CW Adapter for the Radio Shack HTX-10 Ten Meter
A CW Adapter for the Radio Shack HTX-10 Ten Meter

3 - impulse response
3 - impulse response

... the computational requirement to make convolution is very large. In fact, for 100.000 input samples, for every output sample to be computed, 100.000 products and 100.000 sums are required! Instead, passing to the frequency domain, the operation is just a multiplication, so we reduce the computationa ...
HAMTRONICS® R451 UHF FM RECEIVER: INSTALLATION
HAMTRONICS® R451 UHF FM RECEIVER: INSTALLATION

... stations and prevents squelch pumping on heavy modulation. It also prevents cycling due to slight desense in repeater installations. Of course, this requires setting the threshold a little higher than if there was no hysteresis so that it will close with no signal. If you prefer the older type squel ...
Homework #6 Solution Set
Homework #6 Solution Set

... 20. An ideal mixer is being supplied with the frequencies 600 KHz and 400 KHz. What output frequencies will be produced? The following frequencies will be produced: (a) Originals, 600 KHz and 400 KHz; (b) Sum, 1000 KHz ; (c) Difference, 200 KHz. NB: A balanced mixer does not allow the original frequ ...
RCL Worksheet Key
RCL Worksheet Key

Capacitor Self-Resonance
Capacitor Self-Resonance

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M5400 datasheet - Doble Engineering
M5400 datasheet - Doble Engineering

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Control of Low Inductance ThinGap Motors

SGA-4386(Z)
SGA-4386(Z)

... The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or ot ...
HW2 solution
HW2 solution

... luminance signal. Second, the RGB images are correlated and sending them directly is wasteful of bandwidth. By converting the RGB representation to the YIQ representation, the resulting three components are less correlated and together they occupy narrower bandwidth. Finally, the human eye is less s ...
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INA217 - Vnsky.com

... extremely low levels, even in high gain. The INA217 provides near-theoretical noise performance for 200Ω source impedance. The INA217 features differential input, low noise, and low distortion that provides superior performance in professional microphone amplifier applications. The INA217 features w ...
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5B: ACOUSTIC RESONANCES
5B: ACOUSTIC RESONANCES

... In the previous section we saw that acoustic resonances occur when an air column was driven by an external vibrating source with a frequency at or near the natural frequencies of the air column. It is possible to have resonances in electrical circuits as well. An example of an oscillatory circuit is ...
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Comparison of Transverter vs. Tranceiver Performance (K2DH)

... Fourth, RF Power Output. There are transceivers available that produce up to 100W on VHF/UHF- more than enough for most weak-signal operation. So, what are the disadvantages? First, generally, transceivers cost quite a bit of money. Newer all-mode transceivers can easily run $1-2k, more in some case ...
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Lecture 1
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Harmonic Balance Simulation on ADS

... transient methods to integrate over many periods of the lowest-frequency sinusoid to reach steady state. Harmonic balance, on the other hand, captures the steadystate spectral response directly. The applied voltage sources are typically multitone sinusoids that may have very narrowly or very widely ...
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... transistors, biasing, and temperature compensation techniques. Physics, models, and biasing for field-effect transistors. General treatment of nonlinear controlled sources. High frequency models. Single and multistage broadband small signal amplifiers. Harmonic distortion analysis of amplifiers. Emi ...
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... from one frequency to another and settle within a specified amplitude and frequency is a key requirement for microwave signal generators. But what actually defines the frequency switching speed? What components in the block diagram contribute? What is the specification trade-off with respect to arch ...
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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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