CMOS RF Circuit Design for Reliability and Variability

CMOS RF Circuit Design for Reliability and Variability PDF Author: Jiann-Shiun Yuan
Publisher: Springer
ISBN: 9811008841
Category : Technology & Engineering
Languages : en
Pages : 108

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Book Description
The subject of this book is CMOS RF circuit design for reliability. The device reliability and process variation issues on RF transmitter and receiver circuits will be particular interest to the readers in the field of semiconductor devices and circuits. This proposed book is unique to explore typical reliability issues in the device and technology level and then to examine their impact on RF wireless transceiver circuit performance. Analytical equations, experimental data, device and circuit simulation results will be given for clear explanation. The main benefit the reader derive from this book will be clear understanding on how device reliability issues affects the RF circuit performance subjected to operation aging and process variations.

CMOS RF Circuit Design for Reliability and Variability

CMOS RF Circuit Design for Reliability and Variability PDF Author: Jiann-Shiun Yuan
Publisher: Springer
ISBN: 9811008841
Category : Technology & Engineering
Languages : en
Pages : 108

Get Book Here

Book Description
The subject of this book is CMOS RF circuit design for reliability. The device reliability and process variation issues on RF transmitter and receiver circuits will be particular interest to the readers in the field of semiconductor devices and circuits. This proposed book is unique to explore typical reliability issues in the device and technology level and then to examine their impact on RF wireless transceiver circuit performance. Analytical equations, experimental data, device and circuit simulation results will be given for clear explanation. The main benefit the reader derive from this book will be clear understanding on how device reliability issues affects the RF circuit performance subjected to operation aging and process variations.

RF Power Amplifier and Oscillator Design for Reliability and Variability

RF Power Amplifier and Oscillator Design for Reliability and Variability PDF Author: Shuyu Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 116

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Book Description
CMOS RF circuit design has been an ever-lasting research field. It gained so much attention since RF circuits have high mobility and wide band efficiency, while CMOS technology has the advantage of low cost and better capability of integration. At the same time, IC circuits never stopped scaling down for the recent many decades. Reliability issues with RF circuits have become more and more severe with device scaling down: reliability effects such as gate oxide break down, hot carrier injection, negative bias temperature instability, have been amplified as the device size shrinks. Process variability issues also become more predominant as the feature size decreases. With these insights provided, reliability and variability evaluations on typical RF circuits and possible compensation techniques are highly desirable. In this work, a class E power amplifier is designed and laid out using TSMC 0.18 [micrometer] RF technology and the chip was fabricated. Oxide stress and hot electron tests were carried out at elevated supply voltage, fresh measurement results were compared with different stress conditions after 10 hours. Test results matched very well with mixed mode circuit simulations, proved that hot carrier effects degrades PA performances like output power, power efficiency, etc. Self- heating effects were examined on a class AB power amplifier since PA has high power operations. Device temperature simulation was done both in DC and mixed mode level. Different gate biasing techniques were analyzed and their abilities to compensate output power were compared. A simple gate biasing circuit turned out to be efficient to compensate self-heating effects under different localized heating situations. Process variation was studied on a classic Colpitts oscillator using Monte-Carlo simulation. Phase noise was examined since it is a key parameter in oscillator. Phase noise was modeled using analytical equations and supported by good match between MATLAB results and ADS simulation. An adaptive body biasing circuit was proposed to eliminate process variation. Results from probability density function simulation demonstrated its capability to relieve process variation on phase noise. Standard deviation of phase noise with adaptive body bias is much less than the one without compensation. Finally, a robust, adaptive design technique using PLL as on-chip sensor to reduce Process, Voltage, Temperature (P.V.T.) variations and other aging effects on RF PA was evaluated. The frequency and phase of ring oscillator need to be adjusted to follow the frequency and phase of input in PLL no matter how the working condition varies. As a result, the control signal of ring oscillator has to fluctuate according to the working condition, reflecting the P.V.T changes. RF circuits suffer from similar P.V.T. variations. The control signal of PLL is introduced to RF circuits and converted to the adaptive tuning voltage for substrate bias. Simulation results illustrate that the PA output power under different variations is more flat than the one with no compensation. Analytical equations show good support to what has been observed.

Study of Design for Reliability of RF and Analog Circuits

Study of Design for Reliability of RF and Analog Circuits PDF Author: Hongxia Tang
Publisher:
ISBN:
Category :
Languages : en
Pages : 111

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Book Description
Due to continued device dimensions scaling, CMOS transistors in the nanometer regime have resulted in major reliability and variability challenges. Reliability issues such as channel hot electron injection, gate dielectric breakdown, and negative bias temperature instability (NBTI) need to be accounted for in the design of robust RF circuits. In addition, process variations in the nanoscale CMOS transistors are another major concern in today's circuits design. An adaptive gate-source biasing scheme to improve the RF circuit reliability is presented in this work. The adaptive method automatically adjusts the gate-source voltage to compensate the reduction in drain current subjected to various device reliability mechanisms. A class-AB RF power amplifier shows that the use of a source resistance makes the power-added efficiency robust against threshold voltage and mobility variations, while the use of a source inductance is more reliable for the input third-order intercept point. A RF power amplifier with adaptive gate biasing is proposed to improve the circuit device reliability degradation and process variation. The performances of the power amplifier with adaptive gate biasing are compared with those of the power amplifier without adaptive gate biasing technique. The adaptive gate biasing makes the power amplifier more resilient to process variations as well as the device aging such as mobility and threshold voltage degradation. Injection locked voltage-controlled oscillators (VCOs) have been examined. The VCOs are implemented using TSMC 0.18 [micrometer] mixed-signal CMOS technology. The injection locked oscillators have improved phase noise performance than free running oscillators. A differential Clapp-VCO has been designed and fabricated for the evaluation of hot electron reliability. The differential Clapp-VCO is formed using cross-coupled nMOS transistors, on-chip transformers/inductors, and voltage-controlled capacitors. The experimental data demonstrate that the hot carrier damage increases the oscillation frequency and degrades the phase noise of Clapp-VCO. A p-channel transistor only VCO has been designed for low phase noise. The simulation results show that the phase noise degrades after NBTI stress at elevated temperature. This is due to increased interface states after NBTI stress. The process variability has also been evaluated.

RF Circuit Designs for Reliability and Process Variability Resilience

RF Circuit Designs for Reliability and Process Variability Resilience PDF Author: Ekavut Kritchanchai
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
CMOS devices are scaled down and beyond pose significant process variability and reliability issues. Negative biased temperature instability (NBTI) and hot carrier injection (HCI) are well-known aging phenomena that degrade transistor and circuit performance. Yield analysis and optimization, which takes into account the manufacturing tolerances, model uncertainties, variations in the process parameters, and aging factors are known as indispensable components of the circuit design procedure. Process variability issues become more predominant as the feature size decreases. With these insights provided, reliability and variability evaluations on typical RF circuits and possible compensation techniques are highly desirable. In this work, a class F power amplifier was designed and evaluated using TSMC 0.18 [micrometer] RF technology. The PA’s output power and power-added efficiency were evaluated using the ADS simulation. Physical insight of transistor operation in the RF circuit environment was examined using the Sentaurus mixed-mode device and circuit simulation. The hot electron effect and device self-heating degraded the output power and power-added efficiency of the power amplifier, especially when both the input transistor and output transistor suffered high impact ionization rates and lattice heating.

CMOS RF Cituits [sic] Variability and Reliability Resilient Design, Modeling, and Simulation

CMOS RF Cituits [sic] Variability and Reliability Resilient Design, Modeling, and Simulation PDF Author: Yidong Liu
Publisher:
ISBN:
Category : Low noise amplifiers
Languages : en
Pages : 150

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Book Description
The work presents a novel voltage biasing design that helps the CMOS RF circuits resilient to variability and reliability. The biasing scheme provides resilience through the threshold voltage (V[subscript T) adjustment, and at the mean time it does not degrade the PA performance. Analytical equations are established for sensitivity of the resilient biasing under various scenarios. Power Amplifier (PA) and Low Noise Amplifier (LNA) are investigated case by case through modeling and experiment. PTM 65nm technology is adopted in modeling the transistors within these RF blocks. A traditional class-AB PA with resilient design is compared the same PA without such design in PTM 65nm technology. Analytical equations are established for sensitivity of the resilient biasing under various scenarios. A traditional class-AB PA with resilient design is compared the same PA without such design in PTM 65nm technology. The results show that the biasing design helps improve the robustness of the PA in terms of linear gain, P1dB, Psat, and power added efficiency (PAE). Except for post-fabrication calibration capability, the design reduces the majority performance sensitivity of PA by 50% when subjected to threshold voltage (V[subscript T]) shift and 25% to electron mobility ([mu subscript n]) degradation. The impact of degradation mismatches is also investigated. It is observed that the accelerated aging of MOS transistor in the biasing circuit will further reduce the sensitivity of PA. In the study of LNA, a 24 GHz narrow band cascade LNA with adaptive biasing scheme under various aging rate is compared to LNA without such biasing scheme. The modeling and simulation results show that the adaptive substrate biasing reduces the sensitivity of noise figure and minimum noise figure subject to process variation and device aging such as threshold voltage shift and electron mobility degradation. Simulation of different aging rate also shows that the sensitivity of LNA is further reduced with the accelerated aging of the biasing circuit. Thus, for majority RF transceiver circuits, the adaptive body biasing scheme provides overall performance resilience to the device reliability induced degradation. Also the tuning ability designed in RF PA and LNA provides the circuit post-process calibration capability.

Parasitic-Aware Optimization of CMOS RF Circuits

Parasitic-Aware Optimization of CMOS RF Circuits PDF Author: David J. Allstot
Publisher: Springer Science & Business Media
ISBN: 0306481294
Category : Technology & Engineering
Languages : en
Pages : 169

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Book Description
In the arena of parasitic-aware design of CMOS RF circuits, efforts are aimed at the realization of true single-chip radios with few, if any, off-chip components. The parasitic-aware RF circuit synthesis techniques described in this book effectively address critical problems in this field.

CMOS Circuit Design for RF Sensors

CMOS Circuit Design for RF Sensors PDF Author: Gunnar Gudnason
Publisher: Springer Science & Business Media
ISBN: 0306475286
Category : Technology & Engineering
Languages : en
Pages : 183

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Book Description
This useful reference is about CMOS circuit design for sensor and actuators to be used in wireless RF systems. It places special focus on the power and data link in a wireless system with transducers powered via the RF link, presenting novel principles and methods.

Variation Aware Analog and Mixed-Signal Circuit Design in Emerging Multi-Gate CMOS Technologies

Variation Aware Analog and Mixed-Signal Circuit Design in Emerging Multi-Gate CMOS Technologies PDF Author: Michael Fulde
Publisher: Springer Science & Business Media
ISBN: 9048132800
Category : Technology & Engineering
Languages : en
Pages : 131

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Book Description
Since scaling of CMOS is reaching the nanometer area serious limitations enforce the introduction of novel materials, device architectures and device concepts. Multi-gate devices employing high-k gate dielectrics are considered as promising solution overcoming these scaling limitations of conventional planar bulk CMOS. Variation Aware Analog and Mixed-Signal Circuit Design in Emerging Multi-Gate CMOS Technologies provides a technology oriented assessment of analog and mixed-signal circuits in emerging high-k and multi-gate CMOS technologies.

The Design of CMOS Radio-Frequency Integrated Circuits

The Design of CMOS Radio-Frequency Integrated Circuits PDF Author: Thomas H. Lee
Publisher: Cambridge University Press
ISBN: 9780521835398
Category : Computers
Languages : en
Pages : 232

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Book Description
This book, first published in 2004, is an expanded and revised edition of Tom Lee's acclaimed RFIC text.

Device Modeling for Analog and RF CMOS Circuit Design

Device Modeling for Analog and RF CMOS Circuit Design PDF Author: Trond Ytterdal
Publisher: John Wiley & Sons
ISBN: 0470864346
Category : Technology & Engineering
Languages : en
Pages : 306

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Book Description
Bridges the gap between device modelling and analog circuit design. Includes dedicated software enabling actual circuit design. Covers the three significant models: BSIM3, Model 9 &, and EKV. Presents practical guidance on device development and circuit implementation. The authors offer a combination of extensive academic and industrial experience.