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This article present the CMOS charge pump circuit which is operated in current mode. MOS transistors in this circuit act as the switches (charge transfer switch) and current source for store the charge from the supply voltage into the fly capacitor and transfer charge from the fly capacitor to the output (output capacitor and resistive load). All of the MOSFET which act as switch operated in saturation...
Passive RFID application is often used in back scatter mode where a weak reflected signal is relied upon by reader systems. This limits the application of the technology as the reader and tag distance is constrained. This paper presents a passive design where planar capacitors are used to locally store charges to power a tag based on newer CMOS technology. In this paper BSIM4 transistor model based...
In this paper, influences on CMOS voltage controlled oscillator (VCO) caused by dummy metal fills are investigated. Two fully integrated VCOs are fabricated, tested and verified in 0.18-mum 1P6M bulk CMOS technology. The area-consuming inductors and capacitors of the VCOs are implemented by multilayer complementary-conducting- strip transmission lines (CCS TLs) and metal-oxcide-metal (MOM) capacitors,...
In this work, the gate-to-bulk capacitance property of MOS transistors is employed to design high-speed two-stage operational amplifiers (opamp). Traditional design of two-stage opamps recommends MIM or PIP capacitors to avoid instability in closed-loop applications. In addition to area efficiency achieved by replacing these capacitors with MOS transistors, the integration of the opamp would become...
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