
Lecture Notes
... 1v). It is also based on the switching action or switching characteristics of a diode. It consists of a diode and a resistor-capacitor filter. The operation of the envelope detector is as follows. On a positive half cycle of the input signal, the diode is forward biased and the capacitor C charges u ...
... 1v). It is also based on the switching action or switching characteristics of a diode. It consists of a diode and a resistor-capacitor filter. The operation of the envelope detector is as follows. On a positive half cycle of the input signal, the diode is forward biased and the capacitor C charges u ...
Analysis of Series-Parallel Resonant Inductive Coupling Circuit
... been research to find out most suitable topology for particular application such as battery charging [6-10]. While there are other topologies that may be used, the parallel secondary architecture is beneficial for battery charging because of its constant current source characteristics, which occurs ...
... been research to find out most suitable topology for particular application such as battery charging [6-10]. While there are other topologies that may be used, the parallel secondary architecture is beneficial for battery charging because of its constant current source characteristics, which occurs ...
Document
... • bottom electrode and resonant beam • fabricated from polysilicon • sacrificial silicon dioxide layer in between • sacrificial oxide layer also on top of the resonant beam • sacrificial nickel spacer on sides of beam • gold electroplated through a photoresist mask for top metal electrode • nickel a ...
... • bottom electrode and resonant beam • fabricated from polysilicon • sacrificial silicon dioxide layer in between • sacrificial oxide layer also on top of the resonant beam • sacrificial nickel spacer on sides of beam • gold electroplated through a photoresist mask for top metal electrode • nickel a ...
Application Notes
... Series vs. Parallel resonance: When a crystal is operating at series resonance (Fs), it looks resistive in the circuit. At this point \XL\ = \XC\. In series resonance, load capacitance does not have to be specified. The antiresonant frequency (Fa) occurs when the reactance in the series branch is eq ...
... Series vs. Parallel resonance: When a crystal is operating at series resonance (Fs), it looks resistive in the circuit. At this point \XL\ = \XC\. In series resonance, load capacitance does not have to be specified. The antiresonant frequency (Fa) occurs when the reactance in the series branch is eq ...
a CMOS, 125 MHz Complete DDS Synthesizer AD9850
... performance D/A converter and comparator to form a complete, digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9850 generates a spectrally pure, frequency/phase programmable, analog output sine wave. This sine wave can be us ...
... performance D/A converter and comparator to form a complete, digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, the AD9850 generates a spectrally pure, frequency/phase programmable, analog output sine wave. This sine wave can be us ...
Phase noise analysis of a tail-current shaping technique employed
... relative phase noise improvement between separate VCOs could not be measured. The measured results can only serve as proof that the simulated phase noise correlates with the prototype phase noise of around -108.5 dBc/Hz at a 1 MHz offset from the 5 GHz carrier frequency. Simulation results provided ...
... relative phase noise improvement between separate VCOs could not be measured. The measured results can only serve as proof that the simulated phase noise correlates with the prototype phase noise of around -108.5 dBc/Hz at a 1 MHz offset from the 5 GHz carrier frequency. Simulation results provided ...
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.