A 400 MHz reconfigurable injection-locking based RC oscillator for ASK/FSK modulation

Brito, Karolinne; Sousa, Francinalva Cordeiro de; Sobral, Victor Ariel Leal; Lima, Robson Nunes de; Freire, Raimundo C. S.

doi:10.1109/sbcci.2013.6644876

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2015

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“…Only one fractal cell has a different path with multiplexers, generating a global frequency change of f1+△f = f2. Then the multiplexer selection will yield the FSK modulation in the simplest way [5][6]. As shown in the figure, each fractal cell consists of three inverting elements, which configure a ring oscillator.…”

Section: Introductionmentioning

confidence: 99%

CMOS Fractal Oscillator Design for Frequency-Shift Keying Modulation Using Multiplexers

Kim

Choi

Heo

et al. 2015

Advanced Science and Technology Letters

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A new version of the well-known FSK (Frequency-Shift Keying) modulation technique for telecommunication system was proposed and verified. A simple form of ring oscillator with three inverters was adopted for the basic frequency generator. The frequency shift was realized using a ring oscillator composed of nine inverters. CMOS multiplexers were used to select one of two different oscillators, i.e., to shift between two different frequencies. Simulations were performed for the verification.

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Section: Introductionmentioning

confidence: 99%