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This paper describes a silicon-on-insulator MEMS oscillating accelerometer with a fully differential CMOS continuous-time oscillation sustaining circuit and a digital frequency measurement circuit. To reduce the amplitude-stiffness-induced frequency variation, the effects of flicker noise in the automatic amplitude control circuit are classified into additive and multiplicative components, which are...
This paper reports a high-performance low-power and area-efficient single-ended SAR ADC for neural signal acquisition. The proposed 10-bit ADC features a novel symmetrical DAC switching technique that resolves the signal-dependent comparator offset voltage problem in conventional single-ended SAR ADCs, and improves the ADC's ENOB. Combined with an existing LSB single-sided switching method, the proposed...
Inertial navigation sets a very stringent requirement on the long-term stability of an accelerometer, which is characterized by bias instability. Long-term stability demands a very low-noise design. Accelerometers based on capacitance sensing are the mainstream MEMS accelerometers reported recently [1-3]. The state-of-the-art achieves 1μg bias instability and 2μg/Hz1/2 resolution with a full scale...
In this paper, an X-band cross-coupled substrate integrated waveguide (SIW) filter with sharp sideband performance is proposed. The negative coupling is implemented by 201 TE -mode response in the fourth oversized cavity, which is combined with positive coupling to generate transmission zeros(TZs) for improving the sideband performance.The filter with a passband of 11.5GHz∼12.5GHz is fabricated on...
The implement of GB 9254-2008 called out the higher and newer requirements for the construction of electromagnetic compatibility(EMC) laboratory. But currently, quite a lot of inland labs can't satisfy the requirements. Based on the analyzing of historically evolvement of GB 9254, this paper dedicatedly analyses the most updated desire for radio disturbance test of information technology equipment...
This paper describes a technique of finding the noise figure of a 60 GHz LNA by extracting the equivalent noise resistance (Rn) of a MOSFET through on-wafer noise figure (F50) measurements at lower frequency (up to 18 GHz), while the other three noise parameters are extracted from S-parameter measurements beyond 60 GHz. This paper demonstrates how the gain-noise figure performance is optimized using...
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