BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20200308T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20201101T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20201016T154016Z UID:BC905476-75BA-450A-AA4D-781834A592B8 DTSTART;TZID=America/Los_Angeles:20201013T090000 DTEND;TZID=America/Los_Angeles:20201013T100000 DESCRIPTION:Oscillators are used in almost all consumer and professional el ectronic systems and the phase noise and jitter set the ultimate performan ce limit in navigation\, communications and RADAR systems. It is therefore essential to develop simple accurate theories and design procedures to pr oduce oscillators offering state of the art performance.\n\nThis talk will initially discuss the theory and design of a wide variety of oscillators offering the very best performance. Typically\, this is achieved by splitt ing the oscillator design into its component parts and developing new ampl ifiers\, resonators and phase shifters which offer high Q\, high power han dling and low thermal and transposed flicker noise.\n\nKey features of osc illators offering the lowest phase noise available will be shown\, for exa mple: a 1.25GHz DRO produces -173dBc/Hz at 10kHz offset and a noise floor of -186dB and a 10 MHz crystal oscillator shows -123dBc/Hz at 1Hz and -149 at 10Hz.\n\nNew compact atomic clocks with ultra-low phase noise microwav e synthesiser chains (with micro Hz resolution) will also be briefly descr ibed to demonstrate how the long-term stability can be improved.\n\nNew pr inted resonators (and thereby filters) demonstrate Qs exceeding 540 at 5GH z on PCBs and > 80 at 21GHz on GaAs MMICs. These resonators produce near z ero radiation loss and therefore require no screening. L band 3D printed r esonators demonstrate high Q (> 200) by selecting the standing wave patter n to ensure zero current through the via hole and new ultra-compact versio ns (4mm x 4mm) have been developed for use inside or underneath the packag e. Alumina based resonators demonstrating Qs >200\,000 at X band have also been produced. Tunable versions (1%) have recently been developed.\n\nAs an academic\, the aim is to produce the state of the art through insight a nd understanding\, as well as to explain this to others. The author ran th e first course on oscillators including a lab class at IMS 09. This was re peated in 2010\, 2011. A battery powered lab kit offering 5 experiments wi th full theoretical and simulation support was provided. The kit also prod uced the state of the art performance with flicker noise corners around 20 0Hz. The methodology behind this course will be described. Theory and 5 ex periments on the same day was part of the reason for success.\n\nThe next generation of oscillators will offer orders of magnitude improvement in pe rformance. Our current attempts to do this will be described.\n\nCo-sponso red by: MTT-S AdCom MGA Committee\n\nSpeaker(s): Jeremy Everard\, \n\nAgen da: \nVirtual DML Presentation\n\nNorth Hollywood\, California\, United St ates LOCATION:North Hollywood\, California\, United States ORGANIZER:j.c.weiler@ieee.org SEQUENCE:2 SUMMARY:Low Phase Noise Signal Generation Utilising Oscillators\, Resonator s & Filters and Atomic Clocks URL;VALUE=URI:https://events.vtools.ieee.org/m/235406 X-ALT-DESC:Description: <br /><p>Oscillators are used in almost all consume r and professional electronic systems and the phase noise and jitter set t he ultimate performance limit in navigation\, communications and RADAR sys tems. It is therefore essential to develop simple accurate theories and de sign procedures to produce oscillators offering state of the art performan ce.</p>\n<p>This talk will initially discuss the theory and design of a wi de variety of oscillators offering the very best performance. Typically\, this is achieved by splitting the oscillator design into its component par ts and developing new amplifiers\, resonators and phase shifters which off er high Q\, high power handling and low thermal and transposed flicker noi se.</p>\n<p>Key features of oscillators offering the lowest phase noise av ailable will be shown\, for example: a 1.25GHz DRO produces -173dBc/Hz at 10kHz offset and a noise floor of -186dB and a 10 MHz crystal oscillator s hows -123dBc/Hz at 1Hz and -149 at 10Hz.</p>\n<p>New compact atomic clocks with ultra-low phase noise microwave synthesiser chains (with micro Hz re solution) will also be briefly described to demonstrate how the long-term stability can be improved.</p>\n<p>New printed resonators (and thereby fil ters) demonstrate Qs exceeding 540 at 5GHz on PCBs and &gt\; 80 at 21GHz o n GaAs MMICs. These resonators produce near zero radiation loss and theref ore require no screening. L band 3D printed resonators demonstrate high Q (&gt\; 200) by selecting the standing wave pattern to ensure zero current through the via hole and new ultra-compact versions (4mm x 4mm) have been developed for use inside or underneath the package. Alumina based resonato rs demonstrating Qs &gt\;200\,000 at X band have also been produced. Tunab le versions (1%) have recently been developed.</p>\n<p>As an academic\, th e aim is to produce the state of the art through insight and understanding \, as well as to explain this to others. The author ran the first course o n oscillators including a lab class at IMS 09. This was repeated in 2010\, 2011. A battery powered lab kit offering 5 experiments with full theoreti cal and simulation support was provided. The kit also produced the state o f the art performance with flicker noise corners around 200Hz. The methodo logy behind this course will be described. Theory and 5 experiments on the same day was part of the reason for success.</p>\n<p>The next generation of oscillators will offer orders of magnitude improvement in performance. Our current attempts to&nbsp\;do this will be described.</p><br /><br />Ag enda: <br /><p>Virtual DML Presentation</p> END:VEVENT END:VCALENDAR