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In this paper, we present the design of a Deoxyribonucleic Acid (DNA) shearing system based on unique acoustic waves generated using a phased-array transducer. Four 90° sector-transducers are used to build a circular array transducer. Each 90°-transducer is excited with separate RF signal of same or different phase. The proposed transducer structure generates bulk lateral ultrasonic waves in the DNA...
In this paper the design of a high-data-rate transceiver in the 60 GHz band using a QPSK modulation scheme is presented. The channel bandwidth is 1 GHz in order to achieve gigabit Ethernet wireless transmission at 1km distance. The receiver has 66 db of linear controlled gain with a noise figure of 8 dB. The transmitter is capable of delivering −12 dBm of power at the external power amplifier. Both...
The performance of the quadrature receivers are degraded due to the gain and phase mismatch in I and Q channels. In this paper we develop a mixed-mode technique for self calibration in quadrature receivers. A novel mismatch measurement and estimation scheme using an RF amplitude detector and the IC's digital core is shown. Then, digital and digitally-assisted analog correction is employed to remove...
Robustness and yield enhancement techniques for RF circuits and systems are gaining accelerating traction due to increased PVT variability in nanometer CMOS. One of the more viable approaches that make use of the increasingly heterogeneous systems is digitally-assisted RF, enabling circuit programmability and flexibility. With the inclusion of the more robust digital, RF circuits' impairments may...
In this paper we report a 2.4GHz ultra low power (ULP) CMOS down-converter based on current-reuse bleeding technique with resistive feedback. A new figure of merit maximizing gmfT-to-current ratio has been used to bias the transconductance stage. This single balanced mixer shows a conversion gain of 18.7dB and a noise figure of 11.5dB at 10MHz intermediate frequency (IF). Operating under 0.8V supply,...
In this paper we present the implementation of an experimental FDD, QPSK, millimeter-wave radio modem (57–64 GHz) for Point to Point (PtP) wireless backhaul applications. The transceiver supports GbE targeting a two-chip solution plus the antenna subsystem, aiming at highly integrated functions in 90nm CMOS technology, for a range of more than 1km. Achieving these levels of overall integration and...
Without a holistic design and fabrication approach, future wireless communication devices would be extremely large in size to accommodate multiple radio access technologies (RATs) compared to today's more conventional mono-mode devices. Typically multiple RAT devices will be comprised of multiple RF power amplifiers, low noise amplifiers (LNA), RF band pass filters, modulators and demodulators; one...
This paper presents a ultra low power 900 MHz RF transceiver IC. The IC harvests energy from 900 MHz RF carrier wave. The IC has −17 dBm minimum read operation power sensitivity. Analog function blocks, a digital baseband, and a memory system operate with 0.8 V ∼ 2.0 V supply voltage range without voltage regulator. Only current-starved ring oscillator operates 0.6 V with calibration. Most of analog...
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