Multi Look-Up Table Digital Predistortion for RF Power Amplifier Linearization Ph.D. Thesis
... In-phase (I {A (t)}) and Quadrature (Q {A (t)}) components [Ken00]. This Cartesian model is constructed from two nonlinear amplitude models. Nonlinear distortion directly affects nonconstant envelope signals presenting linear modulation schemes, that is, schemes that modulate amplitude and phase (or ...
... In-phase (I {A (t)}) and Quadrature (Q {A (t)}) components [Ken00]. This Cartesian model is constructed from two nonlinear amplitude models. Nonlinear distortion directly affects nonconstant envelope signals presenting linear modulation schemes, that is, schemes that modulate amplitude and phase (or ...
Analog to Digital (A/D) Conversion
... larger than the input then the count is reduced otherwise it is increased using an algorithm to home in on the matching value. – When the counter step size is within the tolerance desired (usually 1 count) then conversion is stopped and the digital value being output to the D/A is output ...
... larger than the input then the count is reduced otherwise it is increased using an algorithm to home in on the matching value. – When the counter step size is within the tolerance desired (usually 1 count) then conversion is stopped and the digital value being output to the D/A is output ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... problem of unregulated ac to regulated dc conversion). This transformation is achieved by the use of semiconductor devices that operate as power switches, turning on and off with a high switching frequency. From the control point of view, power electronic circuits and system constitute excellent exa ...
... problem of unregulated ac to regulated dc conversion). This transformation is achieved by the use of semiconductor devices that operate as power switches, turning on and off with a high switching frequency. From the control point of view, power electronic circuits and system constitute excellent exa ...
DEPARTMENT OF ELECTRICAL ENGINEERING EA4210: ELECTROMECHANICAL ENERGY CONVERSION - II
... Unit 1 Network Functions : Concept of Complex frequency, Transform Impedances Network functions of one port and two port networks, concept of poles and zeros, properties of driving point and transfer functions, time response and stability from pole zero plot. Unit 2: Two Port Networks: Characterizat ...
... Unit 1 Network Functions : Concept of Complex frequency, Transform Impedances Network functions of one port and two port networks, concept of poles and zeros, properties of driving point and transfer functions, time response and stability from pole zero plot. Unit 2: Two Port Networks: Characterizat ...
Extending the Reach of PoE Powered Devices
... common occurrence to have an IP camera installed 400 ft. away from the switch. The camera may power up if sufficient voltage reaches the camera, but the distance is too far for the data communication channel, therefore no video signal reaches the closet. It is important to note that the distance is ...
... common occurrence to have an IP camera installed 400 ft. away from the switch. The camera may power up if sufficient voltage reaches the camera, but the distance is too far for the data communication channel, therefore no video signal reaches the closet. It is important to note that the distance is ...
experiment a1 - Mechanical Engineering : University of Rochester
... above. Answer: Step 5: Draw a Mohr’s Circle for the torque rod case and for the tension case and look up the strength of this stainless steel. Assume this rod is 410 stainless steel. Step 6: Use the value developed in Step 5 to determine whether the maximum torque you applied exceeded the yield stre ...
... above. Answer: Step 5: Draw a Mohr’s Circle for the torque rod case and for the tension case and look up the strength of this stainless steel. Assume this rod is 410 stainless steel. Step 6: Use the value developed in Step 5 to determine whether the maximum torque you applied exceeded the yield stre ...
Datasheet - IXYS Power
... Logic input to provide external clock in case synchronization between internal power supplies of different modules required. If no external clock is applied, internal clock will be used FAULT1 signal logic output FAULT1 signal logic output Channel B gate driver logic input. If INB =1 and INA is acti ...
... Logic input to provide external clock in case synchronization between internal power supplies of different modules required. If no external clock is applied, internal clock will be used FAULT1 signal logic output FAULT1 signal logic output Channel B gate driver logic input. If INB =1 and INA is acti ...
iC5000 I/O module
... IOM signal interface. If the digital input source voltage is higher than 5V, please condition the signal source with a suitable resistor divider, or a resistor-zener diode limiter. In case, for example, a 24V source is connected directly to a module digital input, an excess input current of about 18 ...
... IOM signal interface. If the digital input source voltage is higher than 5V, please condition the signal source with a suitable resistor divider, or a resistor-zener diode limiter. In case, for example, a 24V source is connected directly to a module digital input, an excess input current of about 18 ...
MAX15062B Evaluation Kit Evaluates: MAX15062B General Description Features
... The MAX15062B evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX15062B 60V, 300mA ultra-small, high-efficiency, synchronous step-down converter. The EV kit operates over a wide 6.5V to 60V input voltage range, and provides up to 300mA a ...
... The MAX15062B evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX15062B 60V, 300mA ultra-small, high-efficiency, synchronous step-down converter. The EV kit operates over a wide 6.5V to 60V input voltage range, and provides up to 300mA a ...
PF2325312537
... The demand for high efficiency DC-DC converters is increasing dramatically, especially for use in battery operated devices such as cellular phones and laptop computers. In these devices, it is intrinsic to extend battery life. By employing DC-DC converter power-saving techniques, power efficiency ca ...
... The demand for high efficiency DC-DC converters is increasing dramatically, especially for use in battery operated devices such as cellular phones and laptop computers. In these devices, it is intrinsic to extend battery life. By employing DC-DC converter power-saving techniques, power efficiency ca ...
Power Quality Improvement in Hydropower Generation using Eighteen Pulse Electronic Load Controller. Author: Y.Hareesh Kumar, N.Mahender, P.Kishor
... for an IAG driven by uncontrolled Pico-hydro turbine for single-phase [1] as well three phase power applications. Most of these proposed controllers are reported as electronic load controllers (ELCs) that maintain the constant power at the generator terminal, to regulate constant voltage and frequen ...
... for an IAG driven by uncontrolled Pico-hydro turbine for single-phase [1] as well three phase power applications. Most of these proposed controllers are reported as electronic load controllers (ELCs) that maintain the constant power at the generator terminal, to regulate constant voltage and frequen ...
INTELLIGENT CONTROL OF FLEXIBLE AC TRANSMISSION
... 63100 Cyberjaya, Selangor MALAYSIA Abstract: - A neuro-control approach for flexible AC transmission systems (FACTS) based on radial basis function neural network (RBFNN) is presented in this paper. The proposed scheme consists of a single neuron network whose input is derived from the active or rea ...
... 63100 Cyberjaya, Selangor MALAYSIA Abstract: - A neuro-control approach for flexible AC transmission systems (FACTS) based on radial basis function neural network (RBFNN) is presented in this paper. The proposed scheme consists of a single neuron network whose input is derived from the active or rea ...
a novel wall-switched step-dimming concept in led
... current. Therefore, this converter is not a good choice as a PFC in such applications. The boost converter, on the other hand, presents better power quality performance with higher efficiency, and this has been extensively utilized in industries. However, this converter provides a higher output volt ...
... current. Therefore, this converter is not a good choice as a PFC in such applications. The boost converter, on the other hand, presents better power quality performance with higher efficiency, and this has been extensively utilized in industries. However, this converter provides a higher output volt ...
I:\Projects\MBMANU~1\MB Manual. - Gallien
... hazards, we recommend connection to line circuits with amperage specified “as above”. Connecting multiple amplifiers to the same circuit, or connecting the amplifier to the same circuit used by other heavy-power devices, such as high-wattage lights, may cause circuit breakers to trip. It is always a ...
... hazards, we recommend connection to line circuits with amperage specified “as above”. Connecting multiple amplifiers to the same circuit, or connecting the amplifier to the same circuit used by other heavy-power devices, such as high-wattage lights, may cause circuit breakers to trip. It is always a ...
Voltage and Current harmonics caused by Power Factor
... Periodic wave can be expressed as the sum of a pure sine wave having a frequency, amplitude, and phase respectively. Each component has a frequency which is a sine integer multiples of the fundamental frequency. Components that have frequencies integer multiples of the fundamental frequency is calle ...
... Periodic wave can be expressed as the sum of a pure sine wave having a frequency, amplitude, and phase respectively. Each component has a frequency which is a sine integer multiples of the fundamental frequency. Components that have frequencies integer multiples of the fundamental frequency is calle ...
Model 848 Solid State DC Flasher
... Model 848 Solid State DC Flasher Description The model 848 DC Flasher is a solid-state device intended to connect a DC supply voltage to traffic signal loads in a flashing mode. The unit has two independent output channels that provide a high-side switching function to the loads. The flasher is desi ...
... Model 848 Solid State DC Flasher Description The model 848 DC Flasher is a solid-state device intended to connect a DC supply voltage to traffic signal loads in a flashing mode. The unit has two independent output channels that provide a high-side switching function to the loads. The flasher is desi ...
TG2000 low cost 20MHz DDS function generator from TTi
... 1ppm stability and better than 10 ppm absolute accuracy for one year. Sine, square, triangle, positive pulse and negative pulse waveforms. Low distortion, high spectral purity sine waves. Internal sweep, linear or logarithmic, phase continuous, 0.1Hz to 20MHz in one range. Modulations modes of gated ...
... 1ppm stability and better than 10 ppm absolute accuracy for one year. Sine, square, triangle, positive pulse and negative pulse waveforms. Low distortion, high spectral purity sine waves. Internal sweep, linear or logarithmic, phase continuous, 0.1Hz to 20MHz in one range. Modulations modes of gated ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.