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The undesired signals are removed by the IF bandpass filter, leaving only the desired offset IF signal at f < small >< sub > IF </ sub ></ small > which contains the original modulation ( transmitted information ) as the received radio signal had at f < small >< sub > d </ sub ></ small >.
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undesired and signals
Applying source separation techniques on the measured signals can help remove undesired artifacts from the signal.
This complex signal or pair of real signals is then lowpass filtered to remove the undesired sideband that is not centered at zero.
Jitter can cause a display monitor to flicker, affect the performance of processors in personal computers, introduce clicks or other undesired effects in audio signals, and loss of transmitted data between network devices.
In antenna theory, a phased array is an array of antennas in which the relative phases of the respective signals feeding the antennas are varied in such a way that the effective radiation pattern of the array is reinforced in a desired direction and suppressed in undesired directions.
Thus, besides the intended signal from within the cell, signals at the same frequencies ( co-channel signals ) arrive at the receiver from the undesired transmitters located ( far away ) in some other cells and lead to deterioration in receiver performance.
The big cylindrical bumps on the cable to monitors and laptop chargers are ferrite cores which reduce undesired signals.
In addition, some classes of amplifiers exhibit nonlinear behavior when driven with nearly-discontinuous signals ; this could have undesired effects on the shape of the transmitted signal.
The functional benefit would be a tightly honed neural system that is impervious to " neural interference ", avoiding undesired signals running through the neurons which could possibly worsen verbal fluency.
Beamforming is the method used to create the radiation pattern of the antenna array by adding constructively the phases of the signals in the direction of the targets / mobiles desired, and nulling the pattern of the targets / mobiles that are undesired / interfering targets.
undesired and are
Linearization is an emergent field, and there are many techniques, such as feed forward, predistortion, postdistortion, in order to avoid the undesired effects of the non-linearities.
This is typically an undesired effect, so most semiconductors are packaged in light blocking material.
Octal numbers that are used in some programming languages ( C, Perl, PostScript …) for textual / graphical representations of byte strings when some byte values ( unrepresented in a code page, non-graphical, having special meaning in current context or otherwise undesired ) have to be to escaped as < tt >
To avoid these undesired effects, superplasticizers are typically added to decrease the apparent yield stress and the viscosity of the fresh paste.
Today's sulfur production is as a side product of other industrial processes such as oil refining ; in these processes, sulfur often occurs as undesired or detrimental compounds that are extracted and converted to elemental sulfur.
In FTA, initiating primary events such as component failures, human errors, and external events are traced through Boolean logic gates to an undesired top event such as an aircraft crash or nuclear reactor core melt.
The other lobes are called " sidelobes ", and usually represent unwanted radiation in undesired directions.
For example, noises ( e. g., footsteps, or motor noises from record players and tape decks ) may be removed because they are undesired or may overload the RIAA equalization circuit of the preamp.
The concentrations of solutes ( for example potassium, phosphorus, and urea ) are undesirably high in the blood, but low or absent in the dialysis solution, and constant replacement of the dialysate ensures that the concentration of undesired solutes is kept low on this side of the membrane.
Moiré patterns are often an undesired artifact of images produced by various digital imaging and computer graphics techniques, for example when scanning a halftone picture or ray tracing a checkered plane ( the latter being a special case of aliasing, due to undersampling a fine regular pattern ).
#* Definition of the undesired event can be very hard to catch, although some of the events are very easy and obvious to observe.
#* Once the undesired event is selected, all causes with probabilities of affecting the undesired event of 0 or more are studied and analyzed.
While pH indicators work efficiently at their designated pH range, they are usually destroyed at the extreme ends of the pH scale due to undesired side-reactions.
Pre-action sprinkler systems are specialized for use in locations where accidental activation is undesired, such as in museums with rare art works, manuscripts, or books ; and Data Centers, for protection of computer equipment from accidental water discharge.
Its main goals are reducing drag and wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds.
Once the undesired species in a pasture system are identified an integrated approach of management can be implemented to control weed populations.
The basic idea is that consumers are harmed by being forced to buy an undesired good ( the tied good ) in order to purchase a good they actually want ( the tying good ), and so would prefer that the goods be sold separately.
In addition to showing an incorrect frequency, there are two other disadvantages that can result in undesired performance ; the converter cannot downconvert in full the regular international FM band ( up to 20. 5 MHz wide ) to the only 14 MHz-wide Japanese band ( unless the converter incorporates two user-switchable downconvert modes ), and the car's antenna may perform poorly on the higher FM band.
The medical practice or technique of cauterization is the burning of part of a body to remove or close off a part of it in a process called cautery, which destroys some tissue, in an attempt to mitigate damage, remove an undesired growth, or minimize other potential medical harmful possibilities such as infections, when antibiotics are not available.
undesired and removed
It is an undesired intermediate product in thorium-based nuclear reactors and is therefore removed from the active zone of the reactor during the breeding process.
It concludes somewhat vaguely, that racial consciousness needs to be increased so that, " women of all classes have the fear and dread of undesired maternity removed from them ..." to usher in the promised utopia, described throughout.
With the physical culling of the scholars from the society, concurrently was also organized a total extermination of all their published and unpublished works, their books were removed from the libraries and destroyed from private collections by intimidated population, articles and publications were culled, published photographs were retouched, private photographs were destroyed, published scientific references were erased, or publications with undesired references were destroyed.
undesired and by
The relief was immediately hidden by tarpaulins to conceal the accident and avoid any undesired ominous interpretations.
Moisture affects explosives adversely by acting as an inert material that absorbs heat when vaporized, and by acting as a solvent medium that can cause undesired chemical reactions.
Any event that triggers an undesired scenario alternative is identified as risk – see Futures Studies for methodology used by Futurists.
In a communication channel, noise is an undesired random signal, often modelled as additive white gaussian noise ( AWGN ), that may be caused by thermal noise or electromagnetic interference ( EMI ) from unknown sources.
A performer will often take a stage name because his / her real name is considered unattractive, dull, unintentionally amusing or difficult to pronounce or spell, or because it has been used by another notable individual or because it projects an undesired image.
The term gained widespead acceptance by the 1990s in academic discourse ; despite originally being used by the perpetrators during the Yugoslav Wars, the term is now considered " the widely accepted scholarly term used to describe the systematic and violent removal of undesired ethnic groups from a given territory.
A first intermediate frequency may even be higher than the input signal, so that all undesired responses can be easily filtered out by a fixed-tuned RF stage.
# Negative punishment ( Penalty ) ( also called " Punishment by contingent withdrawal "): occurs when a behavior ( response ) is followed by the removal of a stimulus, such as taking away a child's toy following an undesired behavior, resulting in a decrease in that behavior.
After analyzing the effects of the sudden break together, the therapist will teach the patient to use this technique by him or herself to interrupt thoughts about the fetish and thus avoid the undesired behavior.
This had the effect of turning the May 14 elections into an opinion poll on relations with mainland China which was undesired by the Democratic Progressive Party, though the DPP subsequently gained a plurality in the elections.
* Formal verification, also model checking: Attempts to prove, by mathematical methods, that the system has certain desired properties, and that certain undesired effects ( such as deadlock ) cannot occur.
According to a 2004 study, current pregnancies were termed " desired and timely " by 58 % of respondents, while 23 % described them as " desired, but untimely ", and 19 % said they were " undesired ".
If morning sickness is a defense mechanism against the ingestion of toxins, the prescribing of anti-nausea medication to pregnant women may have the undesired side effect of causing birth defects or miscarriages by encouraging harmful dietary choices.
Alternatively, the micromanager may attempt by this or other means to create a stressful workplace in which the undesired employees no longer desire to participate ; when such stress is severe or pervasive enough, its creation may be regarded as constructive discharge ( also known in the United Kingdom as " constructive dismissal " and in the United States as " constructive termination ").
Correct use of locks prevents undesired, incorrect or inconsistent operations on shared resources by other concurrent transactions.
Most of his patents in meat curing dealt with either preventing caking of the curing composition, or remedying undesired effects caused by the anticaking agents.
The term is not consistently applied ; it is often used as a pejorative by end users to describe undesired user interface changes even if those changes had little or no effect on the hardware requirements.