Frequency-Domain Study of Lock Range of Injection-Locked Non- Harmonic Oscillators
نویسندگان
چکیده
This paper investigates the lock range of injection-locked non-harmonic oscillators using a frequency-domain approach. By representing a non-harmonic oscillator with a set of harmonic oscillators, the intrinsic relation between the lock range of the harmonic oscillators and that of the non-harmonic is obtained. We show that non-harmonic oscillators exhibit a larger lock range as compared with harmonic oscillators. We further show that non-harmonic oscillators with a multi-tone injection exhibit a larger lock range as compared with that with a single-tone injection. The theoretical findings are verified using a sub-threshold relaxation oscillator designed in IBM 130 nm 1.2 V CMOS technology.
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