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In this paper, we propose an intermittent control scheme for neural oscillator systems with delay. The aperiodically intermittent controller is designed. Based on the linear matrix inequality, and Lyapunov theory, a sufficient condition is derived. The exponential synchronization of master-response neural oscillator systems can be ensured based on designed intermittent controller. Numerical simulation...
The combination of a terahertz parametric oscillator and a large size surface-emitted injection-seeded terahertz parametric generator was used to generate nanosecond THz pulses. The obtained THz pulse energy at 1.74 THz was 6.5 µJ. This is the highest nanosecond THz pulse energy of the terahertz parametric sources.
This paper presents a 60-GHz direct-conversion transceiver using 60-GHz quadrature oscillators. The 65nm CMOS transceiver realizes the IEEE802.15.3c full-rate wireless communication for every 16QAM/8PSK/QPSK/BPSK mode. The maximum data rates with an antenna built in a package are 8 Gbps in QPSK mode and 11 Gbps in 16QAM mode within a BER of < 10−3. The transceiver consumes 186mW while transmitting,...
This paper is concerned with the weak signal detection based on the Duffing chaotic model. To solve the problem of low SNR in traditional testing methods, a method of detecting weak signals based on the Duffing oscillator coupled synchronization is proposed. Through the chaos theory and simulations, the characteristics of the coupled Duffing oscillator, the SNR threshold of the weak signal detection...
In order to solve the electromagnetic heaters' problems of high switching losses and resonant frequency drifting in harsh industrial environments, in this paper, we introduce the soft-switching technology to make the IGBT work on the condition of zero-current turning on and zero-voltage turning off to reduce switching losses, and the IGBT drivers auto adjust the driving frequency to achieve frequency...
This paper presents a 60GHz direct-conversion transceiver using 60GHz quadrature oscillators. The 65nm CMOS transceiver realizes the IEEE802.15.3c full-rate wireless communication for every 16QAM/8PSK/QPSK/BPSK mode. The maximum data rates with an antenna built in the package are 8Gb/s in QPSK mode and 11 Gb/s in 16QAM mode within a BER of <;1CH, and the transmitter and the receiver consume 186mW...
This paper presents a 60-GHz direct-conversion transceiver using 60-GHz quadrature oscillators. The transceiver has been fabricated in a standard 65-nm CMOS process. It includes a receiver with a 17.3-dB conversion gain and less than 8.0-dB noise figure, a transmitter with a 18.3-dB conversion gain, a 9.5-dBm output 1 dB compression point, a 10.9-dBm saturation output power and 8.8-% power added efficiency...
This paper presents a robust RF front-end for 3.1-4.8-GHz direct-conversion Ultra-wideband (UWB) applications such as the MB-OFDM UWB. The circuits contain a gain controllable low-noise amplifier (LNA) with resistive feedback, a merged quadrature mixer with static current injection, and local oscillator (LO) buffers. Post-layout simulations show that the fully differential front-end achieves a maximum...
A two-stage voltage-controlled ring oscillator is designed. Based on closed-loop system and nonlinearity analysis, oscillation start-up and oscillation frequency is predicted by poles and zeros position in s-plane. With the help of this theory analysis, a high FOM, dual tuning, differential controlled VCO is designed. Jazz 0.18 ??m CMOS technology is implemented and the layout area is 47 ??m??80 ??m...
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