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A modulation depth and output power tunable 5.8-GHz CMOS direct-conversion transmitter based on current-mode operation is proposed in this paper. The proposed transmitter consists of an 8bit DAC, LPF, direct up-conversion mixer, a divided-by-two circuit, and PA. The matching network of PA is outside the chip. A binary, unary, segmented current steering DAC is used with the function to achieve 16 levels...
High-Bandwidth Digital Content Protection(HDCP)-it is a technology method which is used to protect the high definition signs. This paper focuses on design and verification of authentication part, the most important of a HDCP2.2 transmitter. Besides architectural analysis and design approach discussions, a detailed micro architecture, including signature verification, key encryption and revocation...
Linear amplification with nonlinear components (LINC) is an attractive technique to achieve linearity amplification with high efficiency. The linearity and resolution of the delay line play a great important role for the performance of LINC transmitters. In order to overcome the limitation of linearity and resolution, a delay-based all-digital phase modulator with calibration algorithm is proposed...
AC coupled low-swing signaling is a new method that can improve delay performance and reduce per-bit power consumption in communication. This paper first performs a delay analysis for AC coupled low-swing circuits based on the Asymptotic Waveform Evaluation (AWE). The new delay metrics demonstrate that optimal designs can be obtained in low-swing signaling. To verify our analysis, a simulation environment...
A 12-bit 250MSPS Pipeline ADC with serial output interface is presented. The pseudo random (PN) calibration technique is used to improve the dynamic performance in the high speed ADC. A integrated serial output interface is implemented to convert 12 bit parallel data into a differential serial data stream. The whole pipeline ADC was fabricated in 180nm 1.8 V 1P5M CMOS process. Test results show that...
We have fabricated a 300GHz-band transmitter capable of quadrature amplitude modulation (QAM) with 40nm CMOS technology. The transmitter successfully generates six-channel 64QAM signals using the frequency band from 275 to 305GHz. The generated aggregate data rate is as high as 123Gbps. In this paper, an appropriate channel allocation plan is discussed from the viewpoints of the allowable frequency...
In this letter, a differential capacitive charge redistribution transmitter (DCC) is proposed as a novel design to replace traditional differential transmitters, for the purpose of reducing the power consumption and increasing the data transmission rate. DCC generates a pair of differential low-swing signals through charge redistribution. Its capacitively driven mode enables high-speed transmission...
Radio frequency (RF) energy harvesting circuit using a 20 nm InAs double-gate n-channel TFET has been studied. RF-DC converter using a two-stage cross-coupled rectifier is evaluated. Rectifier power conversion efficiency (PCE) at low input power using TFET shows noticeably better performance compared to its CMOS counterpart. Temperature sensitivity and threshold voltage variation effects on PCE are...
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