The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this work, we investigated the photocapacitive effect of the metal-ferroelectric-insulator-semiconductor capacitors under illumination. The photocapacitive effect is mainly caused by light photon excitation, contributed from the variation of depletion charge. We suggested that the ferroelectric domains are affected by defect dipole charges formed by the interface trapped charges to lead to the...
In this paper, we introduce a real-time pressure measurement system. A soft material with gauge points is placed ahead of a micro camera, and the material's deformation reflects the pressure applied on it. The image processing circuit mainly consists of an image pre-processing module, a connected area labeled module and a centroid coordinate calculation module. Experiments are implemented to demonstrate...
This paper describes the design of a serial-link transceiver that supports various communication standards from 1.25 to 12.5Gb/s, implemented in 40nm CMOS technology. Both DC and AC coupling mode can be provided by the receiver, in which a wide range PI-based CDR is also proposed. The transceiver utilizes a 3-tap FFE, a 2-stage CTLE and an adaptive 2-tap DFE to achieve the compensation for a Nyquist...
In this paper a high order temperature compensation current reference circuit was proposed, which is accomplished by two current source with opposite temperature coefficients (TC) to obtain a smaller TC. The proposed circuit with a simple structure designed in Global Foundries 0.18μm CMOS process, achieving a temperature coefficient of 30.7ppm/°C in the range of −50∼120°C, and the quiescent current...
The 10Gbase-KR protocol is widely used to accomplish the high speed data conversion in the Ethernet area. This paper presents a design of the critical controller in the physical coding sublayer based on the 10Gbase-KR. In order to satisfy the demand of the high speed data conversion, the scrambler and descrambler are specially designed to work in a parallel mode. The post-synthesis simulation results...
An innovative active-quenching circuit for single photon avalanche diode is presented. A differential amplification circuit based on offset control scheme is adopted to realize rapid avalanche signal discrimination. In order to save the die area, a voltage-controlled transistor acting as a sensing resistance is used. Compared with other traditional circuits, the proposed circuit does not need reference...
A novel current mirror sensing based multi-phase current balance developed in Global Foundry 0.18μm CMOS process was presented in this paper. Different from conventional current mirror sensing method, a new bypass branch was added to make the sample signal more accurate in high switching frequency situation. The method was realized in a 2.5MHz four-phase buck converter. As the simulation result shows,...
Elliptic curve cryptography(ECC) has gained tremendous popularity and the selection of coordinate systems has a significant impact on basic point doubling and point addition operations. In this paper, we investigate into the best suited coordinate systems corresponding to scalar multiplication with a fixed point as well as with an unfixed point and give out implementation schemes in both cases. Besides,...
Large number addition is the fundamental operation in cryptography algorithms. In this paper, we accelerate large addition in hardware design by introducing non-least-positive form, which is beneficial to parallel processing. An implementation of 256-bit signed array accumulator with our method shows an improvement of 18% in speed and 15% in area-delay product compared with traditional design.
MoO3−x-based Transition Metal Oxide Resistive Random Access Memory (ReRAM) devices were fabricated using atomic layer deposition, and their resistance-switching behaviors were investigated. The bipolar phenomenon was observed when 100-nm-thick Au were deposited by electron beam evaporation as bottom electrode (BE) and top electrode (TE), respectively. The proper electrical properties, such as excellent...
In this letter, a diode trigger silicon-controlled rectifier (DTSCR) with small diode width is proposed for Electrostatic discharge (ESD) protection of the low-voltage integrated circuits. The trigger voltage of DTSCR is adjusted by the width of the diodes which are used to trigger on the SCR device. Experimental data show the trigger voltage increases with decreasing the area of the diodes. The trigger...
An op-ampless second-order compensated bandgap reference with low temperature coefficient is proposed in this paper. The bandgap is second-order curvature-compensated by the temperature coefficient of the threshold voltage of a MOSFET. Simulated by Spectre, the output reference voltage is 1.102V with a 2.7ppm temperature coefficient from −40 °C to 160 °C and a −60dB PSRR at low frequency. The current...
This paper presents a design of command queuing engine in eMMC5.1 host system. With the proposed engine, multiple commands can be collected and executed in order of priority instead of executed as they arrive. The proposed engine helps reducing latency on small data transfers so that performance in multitasking scenarios is improved. This design is verified by simulation for various requests and the...
A novel PWM/PFM hybrid-mode auto-change technique for buck DC-DC converter is proposed. The proposed technique utilizes the comparator propagation delay to decide the mode changing point without adding complicated PMW/PFM hybrid-mode controller. The proposed concept enables compact and simple implementation of hybrid-mode buck DC-DC converter. Simulation results show that the buck DC-DC converter...
A five-stage 93.9 GHz-105.6 GHz common-source CMOS amplifier is presented in this paper. The customized on-chip inductor and transmission line (TL) are designed for matching networks. Fabricated in a 65nm bulk CMOS process, this amplifier achieves a peak gain of 9 dB at 100 GHz and 11.7GHz 3-dB bandwidth range from 93.9 GHz to 105.6 GHz, consuming total power of 49.2 mW under 1.2 V voltage supply...
Visible light communication (VLC) has recently become one of the most popular research points. VLC can provide not only illumination, but also the data communication. This technique can be applied in the indoor localization system when it transmits information of location. Global Positioning System is usually unavailable in the building. Indoor localization using VLC is a solution to solve this problem...
In this paper, we implement the Wi-Fi hardware architecture. The core chip designed by the MediaTek Corporation is used to develop its peripheral circuits. The chip supports USB Type and can control the lighting circuit through the APP on the mobile phone, so as to simulate the switch of household electrical appliances. In the future, consumers can purchase home appliances with built-in communication...
Two hybrid memristor-MOS exclusive OR (XOR) and exclusive NOR (XNOR) logic gates based on Memristor Ratioed Logic (MRL) are presented. The proposed gates present logic states with voltages, and implement the logic operation within one clock cycle. The designs ease the voltage degradation problem of the original MRL logic gates, while consuming fewer area overhead and less delay than their counterparts.
Through-silicon vias (TSVs) is one of the key enabling technologies of 3-D ICs. However, the crosstalk problem among the adjacent TSVs decreases the performance and deteriorates the signal integrity of TSV bus. This paper proposes an exhaustive search technique of 6C crosstalk avoidance codewords that is applicable for TSV arrays of different sizes to suppress the crosstalk noise below 6C level. The...
In this paper, a new PNPN tunnel field-effect transistor with L-shaped gate (LG-PNPN TFET) is proposed and investigated by numerical device simulator bringing significant on-state current enhancement. Higher drive current is achieved at VDD = 1.0V than traditional PNPN TFET because of both the line and point tunneling between the source and N+ pocket. Key parameters like the pocket width and doping...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.