Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation
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A4 Artikkeli konferenssijulkaisussa
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Date
2020
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Language
en
Pages
4
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2020 IEEE International Symposium on Circuits and Systems (ISCAS), IEEE International Symposium on Circuits and Systems proceedings
Abstract
A digital-friendly approach to implement injection-locked ring oscillators is proposed. We show that lock can be achieved by dynamically switching the delay of a delay element in a ring oscillator. A logic gate that generates the control signal for switching the delay, together with a one-bit controlled oscillator, inherently realizes a locking mechanism. Measurement results from a prototype circuit fabricated with a 28 nm CMOS process demonstrate the feasibility of the concept. The circuit with a measured lock range of 2.4-3.7 GHz occupies an area of 0.00043 mm2 and consumes 0.18 mW power.Description
Keywords
injection locking, ring oscillator, lock range, phase noise, digital, switched delay, delay modulation
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Citation
Unnikrishnan, V, Järvinen, O, Stadius, K, Kosunen, M & Ryynänen, J 2020, Injection Locking of Ring Oscillators with Digitally Controlled Delay Modulation . in 2020 IEEE International Symposium on Circuits and Systems (ISCAS) ., 9181057, IEEE International Symposium on Circuits and Systems proceedings, IEEE, IEEE International Symposium on Circuits and Systems, Seville, Spain, 10/10/2020 . https://doi.org/10.1109/ISCAS45731.2020.9181057