An ISM-Band Multi-Phase Injection-Locked Ring Oscillator

Berk M. S. , Inam B. B. , Yelten M. B.

12th IEEE Latin America Symposium on Circuits and System (LASCAS), ELECTR NETWORK, 22 - 25 February 2021 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/lascas51355.2021.9459162
  • Keywords: Injection-locking, ring oscillator, low-power, phase noise, LOCKING


Low power applications entail the use of alternatives for phase-locked-loops in frequency synthesis for transmitter and receiver circuits. Regarding this idea, a ring oscillator based on the injection-locking principle has been designed on Cadence Spectre using the UMC 180 nm process technology. The ring oscillator operates at an ISM band (432 MHz) and dissipates 308 mu W with a nominal duty cycle of 50.6% and a phase noise of -98.9 dBcIHz (at an offset frequency of 100 kHz). The low-power operation capability makes the circuit a suitable candidate for biomedical applications.