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This paper presents a 40–45 GHz high intermediate frequency (IF) stage for an extremely wide tuning range (10–40 GHz) receiver, in a 250 GHz fT SiGe BiCMOS process. The chip of the high IF stage down-converts the input 40–45 GHz signal to a low second IF of 0.2 to 4 GHz using a frequency multiplied tunable 10.875–11.875 GHz LO signal. The chip consists of a single-ended input/differential output amplifier,...
In this paper, a novel supply voltage harmonic mitigation method using a simple DVR without harmonic detection is proposed. In contrast to the conventional DVRs control methods, the proposed method realizes two independent control objectives at fundamental and harmonic frequencies without couplings, with the adoption of the proposed voltage controller with two independent inputs focusing on different...
In this paper, a simple limited current injection method is proposed for the operation of DVR under grid voltage deep sags. The proposed method considers the impact of couplings between load power factor and grid voltage sag depth to calculate the minimum injection current that can preserve satisfaction grid voltage compensation under deep sags, Accordingly, the over current tripping off problems...
In this paper, a PV battery hybrid microgrid with series connected microconverters is proposed. A few low voltage (LV) microconverters with different DC sources are series connected to meet with rated output voltage magnitude. A decentralized power control method is developed to realize grid- tied operation. First, droop control is implemented at central controller. The central controller gathers...
The spatial uncertainties of tip positioning due to the nonlinearity of the PZT scanner and thermal drift hinder the further application of the AFM based nanomanipulation. This paper brings forward feature referenced tip localization enhanced by probability motion model to reduce the spatial uncertainties. An improved motion model is probabilistically built by incorporating the PI model, the creep...
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