作者: Dongseok Shin , Kwang-Jin Koh
DOI: 10.1109/JSSC.2017.2782762
关键词: Waveform 、 Frequency-locked loop 、 Acoustics 、 Physics 、 Phase noise 、 Injection locking 、 Frequency domain 、 LC circuit 、 Automatic frequency control 、 Frequency modulation
摘要: This paper presents a fast and autonomous injection frequency tracking locking technique. In the present injection-locking system, quadrature injection-locked oscillator (QILO) is third harmonically locked to voltage-controlled (QVCO). loop, difference between QVCO QILO extracted using QILO’s amplitude modulated (AM) envelope waveform. The AM of signal bears two oscillators. further converted pulse which subsequently drives digital feedback control circuitry update output so that it can track harmonic QVCO. calibration process purely autonomous, self-initiating whenever waveform generated. primarily processed in domain, resulting compact, fast, power-efficient frequency-locked loop (IFLL). By incorporating phase noise (PN) routine after completing calibration, presented IFLL resolves intractable issue PN degradation at edge slave oscillator’s range. results large range 26.5–29.7 GHz only limited by LC tank tuning realized 0.13- $\mu \text{m}$ CMOS consumes 2.4 mW with negligible area penalty. Overall chip size including QVCO, QILO, $1 \times 1$ mm2.