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A Physical Unclonable Function (PUF) is a random cryptographic function which could be implemented using a complex process-based physical system. PUF is a good inexpensive candidate for producing signature keys for cloud-based reliable communication within Internet of Things (IoT) devices in future. PUF made from on-chip Ring Oscillator (RO) is popular due to random physically induced frequency behavior...
Arrays of GaN light-emitting diodes can be used for rapid display of pattern sequences or high speed parallel data transmission using different sites of the array. These operation modes can be combined with each other and are useful for light-fidelity networks with Gb/s capacity.
In this paper we exploit the gm over ID methodology to optimize the design of a four stage conventional Distributed Amplifier (DA) for an Ultra-Wide Band positioning system. The W/L ratio and the DC-biasing of the amplifier's transistors are determined according to the gm over ID methodology by using a series of lookup tables generated starting from the model of the devices. The DA was designed using...
A wide-locking range divide-by-4 static frequency divider for the mm-wave wireless applications is proposed. The capacitive-bridged inductive shunt peaking technique is investigated for widening the locking range and a compact layout area. The divider is realized in 65nm LP CMOS with a small area of 100μm × 160μm occupied. Measurement results show the present divider achieves an operation range percentage...
A novel class-AB Flipped Voltage Follower is proposed, suitable for low-voltage low-power CMOS implementation in advanced technology nodes. Simulations have been performed using STMicroelectronics models for the 45nm technology. The Flipped Voltage Follower allows low output impedance and high linearity by means of a feedback loop. However, like the conventional common-drain voltage follower, it has...
This paper presents a novel pipeline configuration for wireless applications. Redundancy and multi sampling of the input techniques are used for overcoming the main limitations of pipeline ADCs. A special pre-amplifier with built-in thresholds generation is also discussed. The circuit, designed and simulated in a 65-nm CMOS technology, achieves 2.66 GS/s and 8-bit resolution. The supply voltage is...
A 25Gb/s silicon photonics receiver comprising an Electronic Integrated Circuit and a Photonic Integrated Circuit fabricated in 65nm CMOS and in PIC25G technologies respectively is presented. The two chips are 3D-integrated using copper pillars. The front-end amplifier introduces low-noise techniques, realizing record-low input-referred noise current of 0.91pArms, leading to the highest sensitivity...
A low-power biomedical signal acquisition SoC is proposed for continuous health monitoring system. The SoC fully integrates a low-noise analog front-end (AFE), a current-steering low-pass filter (CSLPF), and an output buffer. A DC-rejection loop and a chopping function are added to enhance the noise performance. For processing various bio-signals, the bandwidth can be adjusted to extract the signals...
An explosive growth in the number of IT devices connected to a central system requires massive growth in aggregate bandwidth of wireline communications. As a result, a multi channel architecture is necessary in the high-speed I/O link to meet the ever increasing bandwidth requirement. Forwarded clock (FC) architecture offers the most efficient solution for the multi-channel I/O owing to the shared...
This paper presents a 96.6-dB-peak-SNDR and 50-kHz-bandwidth switched-capacitor delta-sigma modulator for ADC operating at 1.8 V and consuming 7.9 mW. This performance is achieved by the introduction of Class-AB single-stage switched variable-mirror amplifiers (VMAs) combined with an optimized architecture and a 5-phase switched-capacitor scheme. The resulting 1.8-mm2 delta-sigma modulator is integrated...
Automotive radars in the 77–81 GHz band will be widely deployed in the coming years. This paper provides a comparison of the bi-phase modulated continuous wave (PMCW) and linear frequency-modulated continuous wave (FMCW) waveforms for these radars. The comparison covers performance, implementation and other non technical aspects. Multiple Input Multiple Output (MIMO) radars require perfectly orthogonal...
This paper presents a 60 GHz TX/RX chipset in 40 nm CMOS technology flip-chip mounted on a multilayer organic package with integrated phased-array antennas. The TX/RX chips perform phase shifting of 4 antenna paths in analog baseband. Short range (< 5 m) gigabit communication is proven by measurement of a wireless link between TX and RX modules.
In high-speed serial communication interface circuits, a high-performance slicer is essential. This paper presents an improved slicer based on SA/FF (Sense Amplifier/Flip Flop) and extracts the sample function of whole circuit system. The results show that the proposed configuration can achieve a regeneration gain of 61.8dB and a −3dB bandwidth of 10GHz. The power consumption of the new structure...
This paper demonstrates a high accurate split mode tuning fork gyroscope with sub-degree per hour stability. The gyroscope sensing element is fabricated in an 80µm-thick SOI process and sealed in a wafer level vacuum package. Interfaced with an ultra low noise CMOS readout circuit, this gyroscope achieves 0.006 deg/√h angle random walk (ARW) and 0.18 deg/h bias instability. Its corresponding zero...
The demand for energy-efficient I/O link transceivers operating at raw data-rates in the tens of Gb/s continues to fuel innovation in the field of wireline communication [1]. Receiving equalizers under one pJ/b are sought for chip-to-chip and chip-to-module links designed to operate across short-reach copper channels. Standards such as CEI-28G-VSR suit chip-to-module communication at raw data rates...
An electrical-balance duplexer (EBD) is a tunable RF front-end concept that seeks to address several key challenges of 4G and 5G mobile systems [1]. The basic principle is shown in Fig. 20.8.1. Duplexer isolation is achieved when the signals in paths 1 and 2 cancel and prevent the TX signal from appearing at the RX port. This cancellation is achieved by “balancing” the antenna impedance ZANT with...
To allow a maximum theoretical data-rate of 25Gb/s over a 1km distance using 64QAM, an E-Band system should feature a 20dBm-output-power TX and an RX with 10dB maximum noise figure (NF) over two bands of 5GHz from 71 to 76GHz and 81 to 86GHz [1]. To minimize the NF of a fully integrated RX front-end and to compensate for the low conversion gain and high noise of the following mixer, a broadband LNA...
THz region of electromagnetic spectrum has unique features making it attractive in spectroscopic studies, material inspection, tera-bit/sec communication, and biological- and non-biological-imaging applications. Owing to challenges in producing sufficiently strong signals, this region of spectrum has been exclusively served by III–V electronics or bulky cryogenic-temperature technologies such as QCLs...
The width of RF bands commonly used for cellular telecommunications has grown from 35-to-75MHz for 2G/3G/4G platforms to 100-to-200MHz for today's LTE, and the desire for relaxed image-rejection filtering has pushed the direct IF sampling frequencies to 300+ MHz. This paper presents a continuous-time (CT) multi-stage noise-shaping (MASH) ADC IC that achieves 69dB of DR over a 465MHz signal bandwidth...
Semiconductors continue to be the foundation for computing and communications solutions, the basis of the Internet of Everthing, and the primary driver in the future of electronics applications. Moore's Law has led to evermore-powerful smart phones, tablets, personal computers, and data centers. It has enabled computing to become a seamless and powerful force in our homes, offices, cars, factories,...
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