BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20230312T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20221106T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20230130T180123Z UID:3FC0E8B5-B1D0-4D7B-BD19-9B31A5EE7D3F DTSTART;TZID=America/New_York:20230123T161000 DTEND;TZID=America/New_York:20230123T170000 DESCRIPTION:LC VCOs are commonly used for RF carrier generation. A wide tun ing range in a single VCO is desirable for covering multiple bands while o ccupying a small area. An octave tuning range enables continuous coverage of all lower frequencies by integer frequency division. LC VCOs are most o ften tuned using variable capacitor banks and varactors. Because of switch resistances in capacitor banks and poor quality factor of varactors\, usi ng only capacitors for tuning degrades the phase noise\, especially at mil limeter-wave frequencies. Variable inductors using series switches pose th e same problem. Mutual coupling can be exploited to realize multiple reson ant modes with different effective inductances without using switches. Thi s allows a wider tuning range without substantial reduction in the tank qu ality factor. Topologies for multi-mode resonant structures and their perf ormance will be described with examples from the literature.\n\nSpeaker(s) : Dr. Krishnapura\, \n\nRoom: BA B025\, Bldg: Bahen Centre for Information Technology\, 40 St George St\, Toronto\, Ontario\, Canada\, M5S 2E4\, V irtual: https://events.vtools.ieee.org/m/342962 LOCATION:Room: BA B025\, Bldg: Bahen Centre for Information Technology\, 4 0 St George St\, Toronto\, Ontario\, Canada\, M5S 2E4\, Virtual: https:// events.vtools.ieee.org/m/342962 ORGANIZER:alireza.sharif-bakhtiar@ieee.org SEQUENCE:8 SUMMARY:Distinguished Lecture Series: Wide Tuning-Range VCOs Using Multi-Mo de Resonators URL;VALUE=URI:https://events.vtools.ieee.org/m/342962 X-ALT-DESC:Description: <br /><p>LC VCOs are commonly used for RF carrier g eneration. A wide tuning range in a single VCO is desirable for covering m ultiple bands while occupying a small area. An octave tuning range enables continuous coverage of all lower frequencies by integer frequency divisio n. LC VCOs are most often tuned using variable capacitor banks and varacto rs. Because of switch resistances in capacitor banks and poor quality fact or of varactors\, using only capacitors for tuning degrades the phase nois e\, especially at millimeter-wave frequencies. Variable inductors using se ries switches pose the same problem. Mutual coupling can be exploited to r ealize multiple resonant modes with different effective inductances withou t using switches. This allows a wider tuning range without substantial red uction in the tank quality factor. Topologies for multi-mode resonant stru ctures and their performance will be described with examples from the lite rature.</p> END:VEVENT END:VCALENDAR