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A novel wide stopband bandpass filter implemented with lumped capacitor-based coupling structure is presented in this paper. Lumped-capacitors, instead of traditional parallel-coupled lines, are employed to provide the desired coupling strength between the resonance elements. And certain coupling regions are replaced by coupling points. For verification, an experimental bandpass filter operating at...
A 45 nm microprocessor integrates an all-digital dynamic variation monitor (DVM) to continuously measure the impact of dynamic parameter variations on circuit-level performance to enhance silicon debug and adaptive clock control. The DVM consists of a tunable replica circuit, a time-to-digital converter, and multiplexers to measure circuit delay or frequency changes with less than a 1% measured resolution...
The phase noise effect on microwave attenuation precision measurement using a lock-in amplifier (LIA) is studied. A frequency domain phase noise modeling is used to analyse the phase sensitive detection made by the LIA. The error bound for the magnitude and phase of LIA measurement has been established. The theoretical prediction of the maximum magnitude and phase fluctuation in LIA output agrees...
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