Minimum Reactive Power Filter Design for High - PPGEE
... In many works, passive sinusoidal filters come out as good alternative to reduce the system harmonic content. The inherently low switching frequency of high power converters, limited from about 500 to 1000 Hz, complicates filter design, which generally results in large filter elements. Besides, due ...
... In many works, passive sinusoidal filters come out as good alternative to reduce the system harmonic content. The inherently low switching frequency of high power converters, limited from about 500 to 1000 Hz, complicates filter design, which generally results in large filter elements. Besides, due ...
PLL applications The phase-lock-loop
... • Due to process variations, the VCO frequency range should be extended to fmin/fmax, ~ 10% higher and lower than the request range. • When the control voltage Vc is equal to VDD/2, the VCO clock should be centered in the middle of the desired frequency range. • The duty cycle of the VCO clock outpu ...
... • Due to process variations, the VCO frequency range should be extended to fmin/fmax, ~ 10% higher and lower than the request range. • When the control voltage Vc is equal to VDD/2, the VCO clock should be centered in the middle of the desired frequency range. • The duty cycle of the VCO clock outpu ...
SiGe BiCMOS LNA`S AND TUNABLE ACTIVE FILTER FOR
... Compared with using a fixed frequency bandpass filter, a tunable filter may also reduce the number of down-converting stages required in an agile receiver by allowing a greater down-conversion step to be made. Rejection of interfering signals that, for example, may occur at the receiver image freque ...
... Compared with using a fixed frequency bandpass filter, a tunable filter may also reduce the number of down-converting stages required in an agile receiver by allowing a greater down-conversion step to be made. Rejection of interfering signals that, for example, may occur at the receiver image freque ...
Manual for Frequency Counter 2.7 Ghz
... then connect input signal to the channel A input BNC. Frequency range between 50MHz and 1.3(2.7) GHz, press FREQ B switch, then connect input signal to the channel B input BNC. Press “PRID” switch to select period mode of operation for signal on input A. (2) Gate Time Settings The instruments featur ...
... then connect input signal to the channel A input BNC. Frequency range between 50MHz and 1.3(2.7) GHz, press FREQ B switch, then connect input signal to the channel B input BNC. Press “PRID” switch to select period mode of operation for signal on input A. (2) Gate Time Settings The instruments featur ...
Theory of Operations - University of Portland
... The reset control is connected to all the flip-flops within the PLL circuit. The reset is only used if the system does not work because a flip-flop starts in an unknown state that causes problems. If there are problems on start-up, the reset button should be set to 0 (because it enable-low) momentar ...
... The reset control is connected to all the flip-flops within the PLL circuit. The reset is only used if the system does not work because a flip-flop starts in an unknown state that causes problems. If there are problems on start-up, the reset button should be set to 0 (because it enable-low) momentar ...
Ringing artifacts
In signal processing, particularly digital image processing, ringing artifacts are artifacts that appear as spurious signals near sharp transitions in a signal. Visually, they appear as bands or ""ghosts"" near edges; audibly, they appear as ""echos"" near transients, particularly sounds from percussion instruments; most noticeable are the pre-echos. The term ""ringing"" is because the output signal oscillates at a fading rate around a sharp transition in the input, similar to a bell after being struck. As with other artifacts, their minimization is a criterion in filter design.