RF2057 HIGH PERFORMANCE WIDEBAND RF PLL/VCO WITH Features
... very fine frequency resolution. The buffered LO output drives the built-in RF mixers which convert the signal into the required frequency band. The mixer bias current can be programmed dependent on the required performance and available supply current. The VCO has been designed to cover the frequenc ...
... very fine frequency resolution. The buffered LO output drives the built-in RF mixers which convert the signal into the required frequency band. The mixer bias current can be programmed dependent on the required performance and available supply current. The VCO has been designed to cover the frequenc ...
Three Phase - Single Phase Converter
... The SPWM controls six switches as shown in Figure 2.1. To accomplish control, three sinusoidal waveforms with adjustable phase shifts were introduced as the SPWM references. The frequencies of these sinusoidal waveforms were chosen to be 60 Hz to match the maximum input frequency of the induction ma ...
... The SPWM controls six switches as shown in Figure 2.1. To accomplish control, three sinusoidal waveforms with adjustable phase shifts were introduced as the SPWM references. The frequencies of these sinusoidal waveforms were chosen to be 60 Hz to match the maximum input frequency of the induction ma ...
AN-384 Audio Noise Reduction and Masking
... the audio material is not distorted. For DNR, this means that the −3 dB corner frequency of the low pass filters inserted in each audio channel must increase quickly enough to pass all the music yet decrease back to around 1 kHz in the absence of music to reduce the noise. Matching low pass filters ...
... the audio material is not distorted. For DNR, this means that the −3 dB corner frequency of the low pass filters inserted in each audio channel must increase quickly enough to pass all the music yet decrease back to around 1 kHz in the absence of music to reduce the noise. Matching low pass filters ...
Institutionen för systemteknik R/2R DAC Nonlinearity Compensation Department of Electrical Engineering Master’s thesis
... can listen to the audio signal it must be converted from the digital to the analogue domain. The main component in this conversion is the digital-to-analogue converter (DAC). The DAC concept is introduced to the reader in this chapter. ...
... can listen to the audio signal it must be converted from the digital to the analogue domain. The main component in this conversion is the digital-to-analogue converter (DAC). The DAC concept is introduced to the reader in this chapter. ...
Analog Devices Welcomes Hittite Microwave Corporation
... The evaluation board of Hittite fractional PLL with integrated VCO should be set up as shown in the Figure 1. It should be noted that very low noise PLL with Integrated VCOs are sensitive to noisy power supplies. The evaluation board provides on-board regulators to isolate the +5.5V supply from the ...
... The evaluation board of Hittite fractional PLL with integrated VCO should be set up as shown in the Figure 1. It should be noted that very low noise PLL with Integrated VCOs are sensitive to noisy power supplies. The evaluation board provides on-board regulators to isolate the +5.5V supply from the ...
IMPLEMENTATION OF NEW H- BRIDGE MULTILEVEL INVERTER
... of the multilevel inverter. Fundamental frequency switching control algorithm is used to drive the low frequency part of the multilevel inverter. This proposed topology can be used in power applications such as FACTS, HVDC, PV systems integration with grids, UPS, etc. The switching operation is sepa ...
... of the multilevel inverter. Fundamental frequency switching control algorithm is used to drive the low frequency part of the multilevel inverter. This proposed topology can be used in power applications such as FACTS, HVDC, PV systems integration with grids, UPS, etc. The switching operation is sepa ...
08 SFT2841 connected..
... RMS measurement RMS measurement is only used by the phase current metering function and for the thermal overload protection function (49). The RMS values take into account harmonics up the the 13th. For all other metering and diagnosis functions, the H1 fundamental 50 Hz or 60 Hz component is us ...
... RMS measurement RMS measurement is only used by the phase current metering function and for the thermal overload protection function (49). The RMS values take into account harmonics up the the 13th. For all other metering and diagnosis functions, the H1 fundamental 50 Hz or 60 Hz component is us ...
Chirp spectrum
The spectrum of a chirp pulse describes its characteristics in terms of its frequency components. This frequency-domain representation is an alternative to the more familiar time-domain waveform, and the two versions are mathematically related by the Fourier transform. The spectrum is of particular interest when pulses are subject to signal processing. For example, when a chirp pulse is compressed by its matched filter, the resulting waveform contains not only a main narrow pulse but, also, a variety of unwanted artifacts many of which are directly attributable to features in the chirp's spectral characteristics. The simplest way to derive the spectrum of a chirp, now computers are widely available, is to sample the time-domain waveform at a frequency well above the Nyquist limit and call up an FFT algorithm to obtain the desired result. As this approach was not an option for the early designers, they resorted to analytic analysis, where possible, or to graphical or approximation methods, otherwise. These early methods still remain helpful, however, as they give additional insight into the behavior and properties of chirps.