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2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum

20-24 April 2009

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Displaying Results 1 - 25 of 285
  • Welcome from the symposium general chairmen

    Publication Year: 2009, Page(s):i - ii
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  • Committees

    Publication Year: 2009, Page(s):iii - v
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  • Awards

    Publication Year: 2009, Page(s):vi - viii
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  • Exhibitors

    Publication Year: 2009, Page(s): ix
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  • The Square Kilometre Array: An international radio telescope for the 21st century

    Publication Year: 2009, Page(s): x
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (94 KB) | HTML iconHTML

    The Square Kilometre Array (SKA) is a next-generation radio telescope which will answer fundamental questions about the origin and evolution of the Universe. With a million square metres of collecting area, the SKA will be 50 times more sensitive than any other telescope ever constructed. Recent technological developments in both computing and radio frequency devices make it feasible to begin cons... View full abstract»

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  • Sponsors

    Publication Year: 2009, Page(s):xi - xii
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  • Tutorial session

    Publication Year: 2009, Page(s): xiii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB) | HTML iconHTML

    Provides an abstract for each of the tutorial presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • Phase and amplitude modulation noise metrology

    Publication Year: 2009, Page(s): xiii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB) | HTML iconHTML

    Noise is everywhere. Its ubiquitous nature interferes with or masks desired signals and fundamentally limits all electronic measurements. Noise in the presence of a carrier is experienced as amplitude and phase modulation noise. Modulation noise will be covered from its theory, to its origins and consequences. The effects of signal manipulation such as amplification, frequency translation and mult... View full abstract»

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  • Advanced laboratory methods

    Publication Year: 2009, Page(s): xiv
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (99 KB) | HTML iconHTML

    Random phase fluctuations, referred to as phase noise and closely related to frequency stability, affect precision and accuracy of timing. Therefore phase noise impacts on numerous fields and applications, like metrology, physics, digital electronics, radars, telecommunications, optics, microwave photonics, gravitation measurements, particle accelerators, etc. View full abstract»

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  • Vibration-induced phase noise in signal generation hardware

    Publication Year: 2009, Page(s):xiv - xv
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (103 KB) | HTML iconHTML

    This two-part, two-hour Tutorial will focus on vibration-induced phase noise in oscillator and non-oscillator components. Part I will cover the analysis aspects of the subject. Part II will deal with measurement methods and troubleshooting techniques. At the conclusion of the Tutorial, attendees should be able to: 1. Identify the sources of vibration-induced phase noise in components and circuit a... View full abstract»

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  • Optical frequency combs: Introduction, sources and applications

    Publication Year: 2009, Page(s): xv
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (80 KB)

    This tutorial will review the topic of optical frequency combs, with an emphasis placed on practical details related to the operation of optical frequency combs for various applications. The tutorial will begin with a brief historical perspective, including discussion of key developments in the late 1990's that ushered in the era of femtosecond laser frequency combs. From there, we will cover the ... View full abstract»

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  • Physical-chemical foundations of piezo-acoustic sensing mechanisms

    Publication Year: 2009, Page(s): xvi
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (78 KB) | HTML iconHTML

    Piezoelectric resonators are in use as mass-sensing devices for almost half a century. More recently it was recognized that shifts in frequency and bandwidth can come about by a diverse variety of interactions with the sample. The classical “load” consists of a thin film, which shifts the resonance frequency due to its inertia. Other types of loading include semi-infinite viscoelasti... View full abstract»

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  • Piezo-electric sensors as electronic/electrical devices

    Publication Year: 2009, Page(s): xvi
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (78 KB) | HTML iconHTML

    This tutorial will cover devices based on piezoelectric crystals and used for physical and chemical sensor applications. Various acoustic wave devices used as temperature, mass, pressure, torque, acceleration sensors, for material characterization, and as chemical agents detectors will be presented and described. The course will focus on two types of piezoelectric sensors that have reached some le... View full abstract»

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  • Introduction to atomic frequency standards

    Publication Year: 2009, Page(s): xvii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (79 KB) | HTML iconHTML

    The fundamental precision of atomic timekeeping is unequaled in any other measurement methodology. Atomic frequency standards provide the ultimate source of accuracy and stability for all modern communications, navigation, and timekeeping systems. State-of-the-art atomic clocks test the frontiers of theoretical and experimental information theory, atomic physics, and cosmology. Practical implement... View full abstract»

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  • MEMS for frequency control

    Publication Year: 2009, Page(s):xvii - xviii
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (94 KB) | HTML iconHTML

    Due to their need for high frequency selectivity and low noise frequency manipulation, portable wireless communication transceivers continue to rely on high-Q, off-chip resonator technologies that must interface with transistor electronics at the board-level, thus contributing to the substantial percentage (often more than 50%) of portable transceiver area taken up by board-level, passive componen... View full abstract»

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  • Clock performance characterization for timekeeping & navigation systems

    Publication Year: 2009, Page(s): xviii
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    • Section 2: Vibration Testing • A reference time scale versus which all the clocks can be synchronized and estimated; • an algorithm for forming a single time scale from a clock ensemble; • the steering of a time scale or a clock with respect to another one; • a good statistical tool to characterize clock stability, accuracy, and reliability; • an efficie... View full abstract»

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  • Algorithms for TAI

    Publication Year: 2009, Page(s):xviii - xix
    Cited by:  Papers (1)
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    The time laboratories realize a stable local time scale using individual atomic clocks or a clock ensemble. Clock readings are then combined at the Bureau International des Poids et Mesures (BIPM) through an algorithm designed to raise the stability, accuracy and reliability of the time scale above the level of performance that can be realized by any individual clock in the ensemble. View full abstract»

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  • Precise GNSS time and frequency transfer

    Publication Year: 2009, Page(s): xix
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (80 KB)

    GPS measurements are used since the eighties for the remote clock comparisons needed for TAI. The technique is based on “Common View”, i.e., the simultaneous observation of the same satellite by two ground stations in order to deduce the synchronization error between the ground clocks and the satellite clock; from that one deduces the synchronization error between the two ground cloc... View full abstract»

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  • Optimal FIR filtering of clock models

    Publication Year: 2009, Page(s): xix
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (80 KB)

    In recent years, finite impulse response (FIR) filtering has demonstrated important features making the approach attractive for various applications in timekeeping. In this tutorial, we review methods of optimal FIR filtering of discrete-time clock models. The tutorial is organized to have two parts. In the first part, possible methods for optimal filtering of clock state are observed and it is po... View full abstract»

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  • Coming events

    Publication Year: 2009, Page(s): xx
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  • Table of contents

    Publication Year: 2009, Page(s):xxi - xlix
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  • Author index

    Publication Year: 2009, Page(s):l - lxxvi
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  • [Copyright notice]

    Publication Year: 2009, Page(s): lxxvii
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  • Integration of AlN micromechanical contour-mode technology filters with three-finger dual beam AlN MEMS switches

    Publication Year: 2009, Page(s):1 - 4
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2765 KB) | HTML iconHTML

    In this paper, we present the first demonstration of the monolithic integration of Aluminum Nitride (AlN) micromechanical contour mode technology filters with dual-beam actuated MEMS AlN switches. This integration has lead to the development of the first prototype of a fully-integrated all-mechanical switchable filter. Integration has been demonstrated by using AlN contour-mode MEMS filters at two... View full abstract»

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  • Experimental study of temperature-compensated aluminum nitride Lamb wave resonators

    Publication Year: 2009, Page(s):5 - 9
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1004 KB) | HTML iconHTML

    In this paper, the temperature compensation of aluminum nitride (AlN) Lamb wave resonators using edge-type reflectors is experimentally studied and demonstrated. By adding one compensating silicon dioxide (SiO2) layer with an appropriate thickness, the Lamb wave resonator can achieve a zero linear temperature coefficient of frequency (TCF). With the composite membranes including 1 mum A... View full abstract»

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