Apparatus and methods for rotary traveling wave oscillators
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United States of America Patent
Stats
-
Aug 25, 2020
Grant Date -
Sep 12, 2019
app pub date -
May 23, 2019
filing date -
Oct 7, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus and methods for rotary traveling wave oscillators (RTWOs) are provided herein. In certain configurations, an RTWO includes a differential transmission line connected in a ring and a plurality of segments distributed around the ring. The segments include metal stubs extending from the RTWO's differential transmission line. The metal stubs aid in providing access to additional layout resources for tuning capacitors and other circuitry of the RTWO's segments, while permitting the length of RTWO's ring to be relative short. Thus, the metal stubs do not inhibit the RTWO from operating with relatively high oscillation frequency, while providing connectivity to tuning capacitors that tune the RTWO's oscillation frequency over a wide tuning range and/or provide fine frequency step size.
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Patent Citation Ranking
- 3 Citation Count
- H03L Class
- 34.27 % this patent is cited more than
- 5 Age
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