How To Use Impedance In A Sentence

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If the load impedance perfectly matches the transmission line impedance, the reflected power is zero.
As the signal propagates down a path, the voltage magnitude is related to the effective impedance up to the point in the signal's flight.
Another possible origin of positive feedback is the finite internal impedance of the bias supply.
Furthermore, it has a small action time and large impedance.

The results for element input impedance , radiation efficiency of space wave, directivity and radiation pattern are presented.
The impedance characteristics of the wide-band E-shaped microstrip antenna is analyzed by using the FDTD method. The antenna bandwidth of impedance can exceed 30%.
The scattered light is collimated, and simultaneously detected by a fixed array of 18 transimpedance photodiodes, which span an angular region from 22.5 [degrees] to 147 [degrees].
As I said, the impedance of a capacitor is inversely proportional to its capacitance and the impedance of an inductor directly proportional to its inductance.
The path isolation for a matrix card is the impedance from the HI and LO terminals of one path to the HI and LO terminals of any other path.
A high impedance probe for the spectrum analyzer is essential.
The most convenient and cost-effective way to measure the 3 body compartments is through bioelectrical impedance analysis, a quick, painless procedure that sends a low electrical current through the body.
It uses a technique called electrochemical impedance spectroscopy (EIS) with a series of parallel bands of electrodes with alternate bands connected together. PhysOrg.com - latest science and technology news stories
It may be expressed as IX, where X, the reactance, is the imaginary part of the impedance.
Less-accurate methods, such as skin-fold calipers and bioelectrical impedance, can have a margin of error of 4 percent - even greater if the tester doesn't do everything precisely right.
The receiver section is designed using the MAX3748 limiting amplifier (LA) and MAX3744 transimpedance amplifier (TIA).
The phasors representing the e.m.f. and potential difference across impedance Z then have lengths in the same proportion to and respectively.
He diverted himself momentarily with the calculation of the total impedance of a certain circuit. THE INNOCENT
Impedance between the phase terminals in the two-port network equivalent to a given network component.
This greatly minimizes crosstalk among signals and helps to balance the effective impedance of each line at high frequencies.
When the phased array coil designed, such problems have to be taken into account as resonant frequency, impedance match, mutual impedance and et al.
Impedance matching of the tympanic middle ear occurred very early in amniote evolution. A Decade Spanning Single Exchange
Recording a five-string Fender bass with active pickups, I switched the impedance to 47k.
In each test the operator measured the skin impedance at this point as indicated in arbitrary units on the galvanometer while the patient held the hand electrode to complete the electrical circuit.
The matching impedance and wastage relate to the TWT can or can not work up to snuff. They are the problems which need be solved when we design the input and output apparatus.
New features include a 1.8V matched impedance interface, known as stub series terminated logic.
Impedance, charge and discharge performance. The crystal structure of calcium zincate composed by ourselves was verified by X-ray diffraction.
The effects of impedance loading on microwave imaging of radar target are investigated.
High impedance leads to heating of the material, arcing to the material under the dispersive electrode, and subsequent burns.
And their main technical parameters, which are impedance, response time, the level of the residual voltage, maximum peak pulse current and life times, are compared.
Ideally, any alternating voltmeter should possess infinite impedance and any a.c. meter negligible impedance.
Parameters and are in fact dimensionless while and respectively exhibit impedance and admittance dimensions.
Sylvester KG, Rasanen J, Kitano Y, Flake AW, Crombleholme TM, Adzick NS: Fetal tracheal occlusion reverses the high vascular impedance in diaphragmatic hernia. CHOP congenital diaphragmatic hernia publications
If the eardrum is no longer physically connected to the inner ear, i.e. loss of a single ossicle, the impedance matching effectively reduces to zero (in fact "poor impedance matching" is just an oxymoron), but hearing does not require all parts of the system. A Decade Spanning Single Exchange
Even slight mismatching will cause large errors in the transfer function and degrade the output impedance causing the circuit to become less of a true current source.
To amplify the signal, we use a transimpedance amplifier, which also converts the output current of the photodetector to a voltage.
The impedance function is approximated by fractional polynomial, which is represented as a series connection of parallel RL elements (Foster form).
The antenna is a (Yagi?) impedance 50 (ohms? looks like a headset sign); residual wave radiation, - 60dB; Transmission current 1500mA Modulation frequency deviation, 5KHz (mas/minus). Where can I get the antenna I need?
The equivalent impedances of inductor and capacitor in transient response were deduced from the exponential transient solution and the volt ampere relation of these elements.
In contrast, the configurations and sizes of the nozzles of the first and the second head members are identical, and their impedances are also the same.
When there is a certain restriction to the total length of impedance transformer, the characteristic impedance of conventional commensurate broadband matching networks would exceed feasible range.
This greatly minimizes crosstalk among signals and helps to balance the effective impedance of each line at high frequencies.
The electric characteristic parameters of package for high speed ASIC include propagation delay, characteristic impedance, cross talk, parasitic inductance and capacitance.
The effect of electrical coupling on the impedance is shown in Figure 8.
And the dynamic impedances of rigidly-capped pile groups are derived by (adopting) the dynamic interaction factor.
Number three, inclusion of interstage matching as found in the AH212 and 323 and lastly with the highest levels of integration are needed a fully integrated 50 ohm input/output impedance solution such as the [TQM 87 9006]. TriQuint CEO Discusses Q3 2010 Results - Earnings Call Transcript -- Seeking Alpha
It has also been suggested that it reduces soil mechanical impedance by means of its secretion of slimy mucilage and by the sloughing of border cells.
This paper derived the measurement method of phase harmonic impedance.
Again, the agreement between the full wave and quasi-static calculations is due to the use of equations 4 and 5 to find the surface impedance of the lossy semiconductor layer.
The technique is based on the principle that lean tissue has a higher electrical conductivity and a lower impedance rate than fat.
Electrical impedance spectroscopy is a method for studying the structure of organic and inorganic materials.
The adoption of capacitor feedback transimpedance amplifier(CTIA) and correlated double sampling (CDS) structure helps to reduce the noise of the circuit.
One tactic is simply to shield the device, by enclosing it in a metal or plastic box of low impedance.
The transponder alters the impedance of the tuned circuit in accordance with the coded pattern.
Changing the length of a transmission line will change the input impedance if the load isn't properly matched to the line.
If the eardrum is no longer physically connected to the inner ear, i.e. loss of a single ossicle, the impedance matching effectively reduces to zero (in fact "poor impedance matching" is just an oxymoron), but hearing does not require all parts of the system. A Decade Spanning Single Exchange
Each antenna features vertical polarization, with an impedance of 50 ohms.
Objective To determine the normal value of cardiac output measured by reconstructed impedance cardiogram.
In order to enhance the saturated optical power, the transimpedance of receiver module is replaced by the one with DC cancellation circuits, and then it is up to –1dBm.
Repeated measures ANOVA showed significant differences among the walk groups in body fat measures by bioelectric impedance and waist-to-thigh ratio.
Capability of a power system to regain a steady state, characterised by the synchronous operation of the generators after a disturbance due, for example, to variation of power or impedance.
Another possible origin of positive feedback is the finite internal impedance of the bias supply.
Care should be taken in impedance matching between the elements of the user's GPS system.
For nonuniform broadband impedance transformers, the design has greater flexibility because the constraint that all elements have the same electrical length is removed.
The acoustic parameters include complex reflection and transmission coefficient (echo reduction and insertion loss), attenuation coefficient, complex acoustic impedance and sound speed.
If the load impedance is not equal to the transmission line impedance, the wattmeter will indicate the amount of reflected power.
When impedance is reached, the energy shuts off and a tone alerts OR staff members that fusion is complete.
Electrostatic methods are normally used, such as the field mill, which measures induced electric charge, or an ultra-high-impedance electrometer voltmeter.
Body composition, including fat free mass, fat mass, was assessed by bioelectric impedance.
The instrument must show the true rms value of the voltage across the measuring impedance.
If the load impedance is not equal to the transmission line impedance, the wattmeter will indicate the amount of reflected power.
This was because the coupling resistance value had inverse effects on the amount of current arriving and on the impedance of the neurite.
There is a huge impedance mismatch as you cross an organizational boundary, particularly the boundary between the business and IT organizations.
Another possible origin of positive feedback is the finite internal impedance of the bias supply.
Objective To determine the manifestation of impulse oscillometry (IOS) in variation of respiration impedance on patients with extratracheal tumour.
By introducing the prior information constraint in the objective function, we can solve the ill-posed problem and band-limited problem for the impedance inversion.
The novel non-contact type current sensor based on giant magneto-impedance (GMI) effect in Co-based amorphous ribbon toroidal core was studied.
The passive antenna elements are coupled to selectable impedance components.
Ideally, any alternating voltmeter should possess infinite impedance and any a.c. meter negligible impedance.
The constant impedance is maintained despite changes in temperature and voltage by using two external resistors to hold the impedances for all the I / O pins, which can number hundreds in the larger parts.
Müller & Tsuji, Impedance-Matching Hearing in Paleozoic Reptiles: Evidence of Advanced Sensory Perception at an Early Stage of Amniote Evolution, PLoS ONE 2007. A Decade Spanning Single Exchange
Finally we use FR4 to fabricate the antenna and use the vector network analyzer to measure the reflect coefficient, antenna impedance and the antennas pattern in the chamber.
The passive antenna elements are coupled to selectable impedance components.
It may be expressed as IX, where X, the reactance, is the imaginary part of the impedance.
Parameters and are in fact dimensionless while and respectively exhibit impedance and admittance dimensions.
One tactic is simply to shield the device, by enclosing it in a metal or plastic box of low impedance.
A high - precision internal impedance measurement method of storage battery based on DFT was presented.
Either Sylar's powers are unstoppable, or just the telekinesis is immune to all forms of impedance. HEROES: Can This Show Get Any Better? | the TV addict
The signals from the Na + selective and voltage barrels were measured and simultaneously subtracted by the high impedance differential amplifier.
Of the available on-line biomass assays, the radio-frequency impedance method (often referred to as capacitance) is generally regarded as the most robust and reliable method to monitor viable biomass during fermentation and cell culture. GEN News Highlights
The passive antenna elements are coupled to selectable impedance components.
They have a simple construction with low power dissipation and low output impedance and can be used as interfacing circuits in VLSI designs to reduce the number of external connections on a chip.
Placing the preamplifiers as close to the detectors as possible minimizes the output impedance for driving further stages.
Encephalic tissues impedance is the main parameter of encephalic tissues electrical characteristics.
The short answer is - impedance includes reactance, and reactance includes effects which vary with frequency due to inductance and capacitance.
But sometime there are duplicate storage problems because of the impedance mismatch between object model and relational model.
Here the half-section is said to convert the load to impedance at the input.
Note that impedance and reactance are both given in units of ‘ohms’ just like resistance.
End points were 1) total body fat, as measured by bioelectric impedance; 2) regional fat, estimated by anthropometric measures; and 3) atherogenic blood lipids, measured by, total serum cholesterol, HDL-C, LDL-C, triglycerides.
A new skin impedance measurement system was presented in this paper.
The functional significance of hemichannel activity in lens tissue has been ruled unlikely due to the apparent high impedance of lens fiber cell membranes.
Distortion - product Otoacoustic Emission ( DPOAE ); Impedance Audiometry ; risk newborn; Hearing screening.
AIM: To study the relationship of bad contact of signal electrode and electrical impedance tomography(EIT) and to provide premise in theory and practice for long-term monitoring.
This area is often overlooked by engineers who assume zero impedance ground.
Combination of ladder approach method and equivalent circuit model of slot antenna had been used to analyze its input impedance. Finally, GTD had been used to calculate the radiation pattern.
An impedance matching circuit is provided for each signal-carrying wire pair of the first and second wire pair sets.
Will the electric impedance tomography technique be improved further?
This complete blood count was done on an instrument which employs impedance and pulse editing technology in measuring the mean corpuscular volume.
An impedance matching circuit is provided for each signal-carrying wire pair of the first and second wire pair sets.
They have a simple construction with low power dissipation and low output impedance and can be used as interfacing circuits in VLSI designs to reduce the number of external connections on a chip.
Of particular relevance to Anstee and Ware was the fact that the lower impedance of series-wound armatures, as found in traction motors, makes accurate surge testing of these coils difficult through normal equipment. Manufacturingtalk - manufacturing industry news
To measure body fatness, one may use dual energy x-ray absorptiometry, densitrometry or bioelectrical impedance.
Nonetheless, Jobs said, "This is life in smartphone world, " ignoring the difference between the absorption and impedance mismatch problems.
Figure 3 shows the display when the cable is terminated in its characteristic impedance of 50 ohms.
Generator neutral ground methods include non-ground, low impedance ground, high impedance ground and arc-suppression coil ground.
The impedance of the battery alone is enough to regulate their input.
Polar Instruments has announced the standalone Speedstack impedance coupon generator which produces Gerber files to create impedance test coupons from manual or scripted data, or by pasting data from Polar Instruments 'Speedstack PCB stackup design tools. The Gadgeteer
Both antennas feature linear polarization, an impedance of 50 ohms and maximum input power at 10 watts.
The m-derived section is arranged to exhibit the same characteristic impedance and critical frequency or frequencies as the prototype.
The Pattern option can be used only in conjunction with two-terminal immittances, i.e. impedance and admittance elements such as resistors, conductances, capacitors, and inductors.
Distortion - product Otoacoustic Emission ( DPOAE ); Impedance Audiometry ; risk newborn; Hearing screening.
Electric impedance tomography is a new imaging technique that is potentially capable of monitoring those imbalances.
Transformer coupling of the source and/or detector to the Wheatstone network is often adopted to match impedance levels or for isolation purposes.
The correct way to split T3 cables is to use what's called a power splitter, which contains a transformer to balance the impedance properly at 75 ohms on all connections.

How To Use Impedance In A Sentence

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