ring oscillator and LC oscillator old and new




microwave oscillator



Source of an annular controlled-radius plasma for a plasma relativistic microwave oscillator
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ABSTRACT A technique of a plasma production for the relativistic plasma microwave generator is described. This technique permits the density and radius of the annular plasma in each shot to be controlled. The results of measurements of the plasma parameters are 

Single-transistor microwave chaotic oscillator
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ABSTRACT Chaotic signals must have specific characteristics in order to be used in certain applications. One of them is band-limited power spectrum. An approach to design of chaotic sources with band-limited feature is proposed. Realization of the approach in microwave 

System-level integration of a chip-scale atomic clock: microwave oscillator and physics package
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ABSTRACT We report on our progress in developing a prototype chip-scale atomic clock and describe the integration of the local oscillator and the physics package. A discussion of the design and results is given with a focus on frequency stability, size, and power 

Oscillator basics and low-noise techniques for microwave oscillators and VCOs
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ABSTRACT Microwave oscillator design is based on the principle of generating a negative resistance to compensate for the losses of the resonator. Several circuit combinations, including one-and twoport oscillators, are possible. In this discussion, we will first evaluate 

Development of highly stable BOTDR strain sensor employing microwave heterodyne detection and tunable electric oscillator
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ABSTRACT We successfully developed a new Brillouin-OTDR (BOTDR) that is highly stable in the face of surrounding temperature fluctuations it by employing a microwave heterodyne receiver and a tunable electric oscillator. We were able to realize good frequency and 

Microwave oscillator phase noise requirement for TD-SCDMA wireless communication systems
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ABSTRACT? In time division synchronous code division multiple access (TD-SCDMA) wireless communication systems, QPSK or 8PSK has been employed to support high data rate services and high efficiency in available bandwidth. The performance of such systems is 

Performance of a 12GHz Monolithic Microwave Distributed Oscillator in 1.2 V 0.18 µm CMOS with a New Simple Design Technique for Frequency Changing
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Abstract A monolithic distributed oscillator (DO) is designed and fabricated using an n-FET- based Traveling Wave Amplifier (TWA), coplanar waveguides (CPW) and a proposed coplanar bend structure called a 'folded CPW'. The measured loss S21 (dB) of the 'folded 

42nd Annual Frequency Control Symposium-1988 A PHASE-LOCKED 4-6 GHz LOCALOSCILLATOR USING MICROWAVE PRESCALER
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PC Kandpal Proceedings of the annual Frequency Control 1988 125.7.160.201 Summary A phase-locked broadband local oscillator using a divide-by-8 microwave prescaler is described. The measured phase noise characteristics of the prescaler, the reference source, and the phase-locked source are discussed. Threshold bit error rate ( 

Ultra-wideband microwave chaotic oscillator
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Development of the e?ective sources of ultrawideband signals is stimulated by much interest to ultrawideband communication technologies. Chaotic oscillators can play the role of such sources. In the report structure of the microwave ring oscillator capable to generate 

High power microwave generation from coaxial virtual cathode oscillator
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Abstract A coaxial virtual cathode oscillator (VIRCATOR) has been designed to generate Relativistic Electron Beams and High Power Microwaves. Coaxial virtual cathode oscillators are known for better efficiency compared to the axial virtual cathode oscillators. This 

Progress in Developing a Superconducting Microwave Oscillator for Precision Measurements on Orbit
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ABSTRACT We describe the development of a superconducting microwave oscillator with high frequency stability for use aboard the International Space Station. The project has four main goals; an improved test of Local Position Invariance, improved Kennedy Thorndyke 

Design of a microwave chaotic oscillator using symmetric active load
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ABSTRACT In this paper, a microwave chaotic oscillator with symmetric active load is presented. Compared to the classical Differential bipolar Chaotic Colpitts Oscillator (DCCO) produces anti-phase dual output carriers with intense chaotic behaviour, better linearity 

X-BAND Microwave Gunn Oscillator for Educational Purposes
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JM Zamanillo, C Perez-Vega, J Saiz-Ipiña CD ROM Proceedings of researchgate.net ABSTRACT. A low cost, high performance Gunn X Band oscillator for educational and research purposes has been developed. The cavity has been manufactured on standard waveguide WR90, with UBR100 flange, in order to make it compatible with the rest of waveguide 

High-power microwave generation by virtual cathode oscillator
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ABSTRACT A new configuration of virtual cathode oscillator has been investigated by two dimensional simulation. In this configuration, a cylindrical cavity is located between the electron beam diode and the waveguide. Simulation results have shown that the reflected 

X-parameters based analytical design of non-linear microwave circuits Application tooscillator design
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AM Pelez Prez 2012 oa.upm.es Resumen El diseño clsico de circuitos de microondas se basa fundamentalmente en el uso de los parmetros s, debido a su capacidad para caracterizar de forma exitosa el comportamiento de cualquier circuito lineal. La relación existente entre los parmetros s 

DESIGN AND FABRICATION OF LOW COST MICROWAVE OSCILLATOR
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S Khadanga, S Ahmad rficdesign.com ABSTRACT A low cost microwave oscillator is fabricated using a RF transistor having a half wave length coaxial line as feedback element. The output impedance is matched with lossless microstrip line and the output is taken across 50O load followed by a dc block 

to a Current nined Microwave Oscillator
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N Daniel nlc-bnc.ca ABSTRACT This document describes the design and measurement of a series of spiral inductors fabricated on tow resistivity (1OQcm) silicon, and a bias current tuned oscillator that incorporated one of the previously mentioned spirai inductors.

LC oscillator



Study and simulation of CMOS LC oscillator phase noise and jitter.
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Abstract In this work we review the processes of phase noise and jitter in electronic oscillators and the relationship between the two. Frequency and time domain simulation techniques and results are presented through the study of performance enhancement for 

A 60-GHz 1.65 mW 25.9% locking range multi-order LC oscillator based injection locked frequency divider in 65nm CMOS.
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ABSTRACT A 60-GHz injection-locked frequency divider (ILFD) fabricated in 65nm CMOS and operating at 1.2 V consumes 1.65 mW excluding buffers and biasing circuits, and has a measured locking range of 48.5-62.9 GHz (25.9%) with 0dBm input power. The core ILFD 

LC oscillator Tutorial
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JP Silver Order sadjad.ac.ir 1Abstract This tutorial describes the operation of a basic LC oscillator as used in RFIC circuits etc. The pertinent design parameters are given together with their relevant equations to allow basic 'hand'calculations before simulation is attempted. The initial design consists 

LC Tank Voltage Controlled Oscillator Tutorial
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This tutorial was created from a set of hand written notes that were prepared by Professor John Starr Hamel at the University of Waterloo, Ontario, Canada for use in E CE 439, an undergraduate course in Analog Integrated Circuits.  This tutorial provides an introduction to the 

Design of an Ultra Low Power Low Phase Noise CMOS LC Oscillator
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CMOS LC oscillator and analyze a method to design a low power low phase noise complementary CMOS LC oscillator. A 1.8 GHz oscillator is designed based on this analysis. The circuit has power supply equal to 1.1 V and dissipates 0.17 mW power. The oscillator 

Development of fuzzy inference scheme for LC oscillator design
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LC-free CMOS oscillator employing two-dimensional transmission line
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CKC Tzuang, CC Chen, WY Chien Proc. 2003 IEEE Int. 2003 front.cc.nctu.edu.tw ABSTRACT A compact, fully integrated 5.2 GHz CMOS oscillator based on 0.25µm 1P5M foundry technology is presented. The recently proposed two-dimensional transmission line, called complementary-conducting-strips (CCS), replaces the conventional inductor- 

d. Design and characterization of a 900mhz lc voltage controlled cmos oscillator
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HMG Madureira, JEG MEDEIROS Proceedings of the 9th 2009 lbd.dcc.ufmg.br ABSTRACT This work presents the design and characterization of a 900MHz complementary cross-coupled LC voltage controlled oscillator (VCO). The circuit was prototyped in standard 0.35 µm CMOS technology. It consumed 3.5 mW with phase noise 

Low Power Integrated LC Voltage Controlled Oscillator in CMOS Technology at 900MHz
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R Fiorelli 2005 ohm.fing.edu.uy ABSTRACT In this work, a low power LC voltage controlled oscillator at the 900MHz band has been designed. A 0.35 µm CMOS technology, monolithic inductors and inversion MOS varactors have been used. A review of the most important models of phase noise in LC 

CMOS differential LC-oscillator with MOS Source Degeneration
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DBY Nguyen, SS Lee, S Han, SG Lee fit.hcmup.edu.vn ABSTRACT this letter proposes a new method to suppress flicker noise up-conversion in CMOS differential LC-oscillator. MOS parallel transistors are used as active source degeneration in a differential LC-oscillator to provide the proportional odd order linearity 

LC-oscillator as a clock for data conversion
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KJP Philips, J Verlinden 2006 repository.tudelft.nl ABSTRACT Following the ever-improving performance of data converters, the accuracy of the clock that is sampling the data converter, needs to improve at the same pace. The clock accuracy is especially a problem for high-resolution, wide bandwidth converters.

Analysis of LC oscillator Operating Point and Phase Noise in light of the Uurokawa Theory
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P Roblin 2003 ece.osu.edu ABSTRACT This thesis explores the various aspects of LC oscillator analysisdesign with special emphasis on design parameters like amplitude, frequency and phase noise in light of the Kurokawa theory. In particular we try to develop a methodology for predicting and 

MOSFET THERMAL NOISE MODULATING FUNCTIONS OF AN LC OSCILLATOR
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M MOCANU, PM PUSCASU, RG VIERU iota.ee.tuiasi.ro ABSTRACT. Analytical expressions for MOSFET thermal noise modulating functions of an LC oscillator are presented. These functions are used to analyse the phase noise within the time-varying impulse sensitivity function (ISF) theory. The phase noise due to thermal 

Power supply induced jitter modeling of an on-chip LC oscillator
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ABSTRACT This paper concentrates on developing a closed-form small signal model to determine the Power Supply Induced Jitter (PSIJ) for on chip LC based Voltage Controlled Oscillator (VCO). To determine the source of the PSIJ, we have developed a Mathcad 

LC OSCILLATOR WITH SERIAL RESONANCE
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Abstract The circuit that will be presented offers a flexible alternative to implement a function and to simulate an inductance. The inductance simulated by this method is used in order to obtain a very high frequency (MHz) oscillator. A circuit with two CCII current-conveyors 

Voltage Controlled LC Oscillator with Current Feedback Amplifier
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D Stamenov, I Pandiev, L Donevska, E Gadjeva 2005 tu-sofia.bg A voltage controlled LC-oscillator is proposed in the paper, realized by a currentfeedback operational amplifier (CFA) with an additional terminal, used for control of some amplifier parameters. A parallel resonant circuit is connected to this amplifier terminal, consisting of 

A New Active Inductor and Its Application to Wide Tuning Range LC Oscillator
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M Ebrahimzadeh, F Rezaei, S Rezaei ijsce.org ABSTRACT?This paper presents a new structure to reduce noise in an active inductor. Our structure is based on a local common mode feedback. The proposed active inductor is used for implementation a wide tunable low phase noise LC oscillator. By varying control 

Contactless Resistivity via an LC Oscillator
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ABSTRACT An understanding of the magnetic response of materials as a function of frequency can provide information regarding the energy and time scales of different intra-material interactions. A convenient way to measure magnetic properties at radio frequencies (rf) is 

DESCRIBING FUNCTION ANALYSIS OF AN LC OSCILLATOR STRUCTURE
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M MOCANU, PM PUSCASU, G BONTEANU, L GORAS bulipi-eee.tuiasi.ro ABSTRACT. A detailed analysis based on the describing function approach of an LC oscillator having the same functionality as the classic CMOS Colpitts oscillator is presented. The advantages of this LC oscillator in comparison with the classic CMOS Colpitts oscillator 

2014 LC oscillator



Note for LC Oscillator Power Management for Wireless Network Sensors Technique
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ABSTRACT Wireless Integrated Network Sensors (WINS) provide a new monitoring and control capability for monitoring the borders of the country. We can easily identify a stranger or some terrorists entering the border. The border area is divided into number of nodes. Each node 

Comparative Analysis of Phase Noise in 28 nm CMOS LC Oscillator Differential Topologies: Armstrong, Colpitts, Hartley and Common-Source Cross-Coupled
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Armstrong differential oscillator circuit topologies, designed in 28 nm bulk CMOS technology in a set of common conditions for operating frequencies in the range from 1 to 100 GHz, are carried out in order to identify their relative performance. The impulse sensitivity function is 

Design and Analysis of 5GHz Frequency, Low-Phase-Noise, Parasitic Compensated LCVoltage Controlled Oscillator
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A Singh, M Katare ijarcet.org  A parallel resonance tank comprises of inductance (L) and capacitance (C). The principle operation of the VCO is by means of the controlled operation of the LC tank circuit. An oscillator can be described as a positive feedback system and it amplifies its own noise at a selected 

2014 ring oscillator



Breaching of Ring Oscillator Based Trojan Detection and Prevention in Physical Layer
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ABSTRACT Trojan insertion has been made difficult in modern communications in the recent years, due to extensive research work in the direction to protect Integrated Circuits (ICs). Several Trojan detection techniques have been developed to prevent the destruction 

The 8 MHz Temperature Compensated Ring Oscillator for UHF RFID Applications
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In order to exchange information between the sender and the receiver of the RFID systems, a clock generator is needed. As shown in Fig. 1, the clock generator is needed not only for handler command, encoding the downlink data and decoding the uplink data in the 

A Ring-Oscillator-based Temperature Sensor with Scalable Resolution
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ABSTRACT A ring-oscillator-based digital tempera-ture sensor with scalable resolution is presented. Through added temperature sensitive resistors the thermal sensitivity is shaped. The circuit was fabricated in AMS 0.35 µm CMOS technology. Unlike conventional 

Configurable Ring Oscillator for FPGA Chip Identification
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MM Patil ijecce.org Abstract Hardware security and intellectual property protection have become very important for vendors. Instead of storing identification information in the device, the physical unclonable functions (PUF) are widely used for identification. There are various 

High Frequency Power Optimized Ring Voltage Controlled Oscillator for 65nm CMOS Technology-Review
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NK Mendhe, MN Thakare, GD Korde ijettjournal.com ABSTRACT A voltage controlled oscillator (VCO) is one of the most important basic building blocks in analog and digital circuits. Like any other circuit, with a VCO there are a number of design requirements that need to be known from the beginning of the design process. 

Design of Low Power, High Speed Differential Amplifier Ring Voltage Controlled Oscillator in CMOS Technology
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F Khatoon, TA Chandel ijitee.org ABSTRACT Designing a compact, power efficient Voltage-Controlled Oscillator (VCO) for high frequency phase lock loop (PLL) in modern wireless communication system is decisively a challenging task. Voltage-Controlled Ring Oscillator are crucial component in many 

Analysis and Design of a Low phase noise, low power, Wideband CMOS Voltage ControlledRing Oscillator in 90 nm process
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SP Dash, A Rath, G Pattnaik, S Das, A Dash ijsetr.org ABSTRACT Based on differential delay cells a low phase noise, a low power, wide band three stage CMOS voltage controlled ring oscillator (VCRO) has been analyzed which was proposed by Yan and Luong. Using GPDK 90 nm CMOS technology the three stage VCO 

2014 microwave oscillator



Review on microwave generation using backward wave oscillator
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ABSTRACT One of the most established vacuum electronic high power source-VED sources of radiation (at higher orders of power and frequency) is the backward wave oscillator (BWO). A BWO is a VED that is used to generate microwaves up to very high 

RF and Microwave Oscillator Design using p-HEMT Transistor
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B Benakaprasad, S Sharabi, K Elgaid ijsrp.org ABSTRACT This paper presents a systematic approach to designing negative-resistance and Colpitts oscillators using p-HEMT transistor. Various models such as, common source and common gate configuration in negative-resistance oscillators, common source series 

2014-rf oscillator



FREQUENCY MEASUREMENT OF A PULSED RF OSCILLATOR
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ABSTRACT. A method to measure the frequency of a pulsed RF oscillator, based on the phaselocked loop principle is described. An analog sample and hold circuit synchronized by the gate signal is used to store the error voltage for VCO during the pauses between RF 

Design and Investigative Aspects of RF-Low Power 0.18-µm based CMOS Differential RingOscillator
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ABSTRACT This manuscript presents the designing and investigative aspects of a low power, wide frequency range, and delay cell based 3 and 5-stage ring oscillator for RF-Ultra-Wide- Band application. The wide range of frequency is achieved by using two variable voltage 

RF Power Amplifier and Oscillator Design for Reliability and Variability
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ABSTRACT 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 

DEVELOPMENT OF AN ULTRA-LOW-EMITTANCE RF PHOTOINJECTOR FOR A FUTURE X-RAY FEL OSCILLATOR
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Abstract The proposed X-ray free-electron laser oscillator [1](XFEL-O) requires continuous electron bunches with ultralow normalized transverse emittance of less than 0.1 µm, a bunch charge of 40 pC, an rms uncorrelated energy spread of less than 1.4 MeV, produced at a  Ring Oscillators • The main difficulty for using submicron CMOS ring oscillators in wireless communication systems is their relatively poor phase noise response. • Precaution is required to achieve as low phase noise as possible from CMOS ring oscillators. – Dominant noise sources in IC environment are common-mode signals in nature (e.g. power supply noise, substrate-coupled noise). Re: ring oscillator and LC oscillator in analog Ring oscillators are preferred in PLLs for clock signal generation due to their simplicity and low power consumption. However, their harmonic distortion is high and their amplitude is fixed; both characteristics are undesirable for the target applications of this PLL. LCbased oscillators have a superior linearity and phase noise performance but their required area can become prohibitively large for frequencies below 1GHz. For signal generation in the range of tenths to few hundreds of MHz, a transconductance-capacitance (OTA-C) oscillator structure offers amplitude control and low distortion in a compact implementation, and hence is chosen for this design. Figure 5 shows a block diagram of the designed differential quadrature oscillator. The oscillation frequency is determined by the ratio gmω/C.

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