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136 - University of California, Santa Barbara
136 - University of California, Santa Barbara

KNOWLEDGE BASE ARTICLE
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... controlled by an on-chip power detector. The FM signal path covers 76MHz to 162.5MHz. The device is available in a small, 3mm x 3mm, TQFN package and operates over the extended industrial temperature range (-40ºC to +85ºC). ...
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... local oscillator frequency. The first subharmonic at 20 GHz is available from the carrier generation scheme described above and illustrated in Fig. 3. Since the static dividers provide I and Q signals, we propose an I/Q scheme for coupling within a 2-D array of oscillators. In Fig. 3, the 20-GHz I s ...
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... The time dependence of the averaged value of φ in response to a π pulse of duration ∆t = 1/2νRabi ∼ 16 ns applied to the qubit is shown in Fig. 2a. Before the start of the pulse the measured phase shift is observed to be φ|↓i ≈ −35.3 deg corresponding to the qubit being in the ground state. Due to t ...
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... Output voltage amplitude and frequency are varied simultaneously using PWM technique. Good harmonic control, but at the expense of complex waveform generation ...
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... operating from 100 - 4000 MHz in cellular and broadband wireless infrastructure applications. Providing a very high level of integration compared with discrete solutions, the HMC597LP4(E) features an on-chip RF balun which allows for singled ended RF input. An off-chip capacitor allows the reconfigu ...
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... The HMC767LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an integrated Voltage Controlled Oscillator (VCO). The input reference frequency range is DC to 350 MHz while the advanced delta-sigma modulator design in the fractional synthesizer allows both ultr ...
Analog Devices Welcomes Hittite Microwave Corporation
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... two inductors, use the simple model in Figure 7 to calculate XL and LEQ. The LF in Figures 1–5 represents an equivalent inductance as seen by pin 1 (IND). The equivalent inductance corresponds to the inductive reactance connected to IND at the desired oscillation frequency (fNOMINAL). LEQ = XL / (2π ...
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... energy from the mainly capacitive ultrasonic transducer is dissipated in, so creating a potential difference. The second stage consists of a current limiting resistor and two signal diodes connected in opposite directions from 0 V to the receiver signal to limit the maximum input voltage to no more ...
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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.
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