Design of Beyond Millimeter Wave Oscillator in 22nm Bulk CMOS Technology
Nithin M1, Harish M. Kittur2
1Nithin M, Research Scholar, Assistant Professor, Department of ECE, SENSE, VIT, Vellore RV College of Engineering, Bengaluru (Karnataka), India.
2Harish M. Kittur, Professor and Dean, Department of Electronics Engineering, VIT, Vellore (Tamil Nadu), India.
Manuscript received on 14 December 2019 | Revised Manuscript received on 22 December 2019 | Manuscript Published on 31 December 2019 | PP: 68-72 | Volume-9 Issue-1S3 December 2019 | Retrieval Number: A10141291S319/19©BEIESP | DOI: 10.35940/ijeat.A1014.1291S319
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Abstract: This paper presents the design of an LC oscillator using inductive feedback technique in bulk CMOS 22 nm technology using predictive technology models. The core oscillator is based on the popular Cherry Hooper amplifier topology. The development of the oscillator circuit from the standard Cherry Hooper topology is discussed in this paper with detailed analysis. The inductors are modelled by considering the various effects in this frequency range. The broadband technique used in the CH topology enables the circuit to oscillate at frequencies more than millimeter wave regime. By employing MOS varactors the designed oscillator was converted into a voltage-controlled oscillator also. The fundamental mode of the oscillator is around 372 GHz with a phase noise measured around -70 dBc/ Hz at 10 MHz offset. The VCO has a tuning range of about 490 MHz when the voltage is varied from 0.3 to 0.8 V. The oscillator circuit consumes power of 3.75 mW from a power supply of 0.8 V.
Keywords: Cherry Hooper, Millimeter Wave Regime, Phase Noise.
Scope of the Article: Low-power design