Divide-by-2 Transformer-Based Injection-Locked Frequency Dividers with Two Active Cores

EasyChair Preprint no. 1236

Abstract

This letter presents a high-performance wide-band divide-by-2 injection-locked frequency divider (ILFD) in the 0.18 μm CMOS process. The ILFD uses transformer-coupled resonator with two resonant frequencies based on the lumped inductor model, and it consists of two sub-ILFDs coupled by inductive coupling. The ILFD can operate in three modes with overlapped locking ranges. The optimal bias condition yields wide locking range at low power with high figure of merit.   At the power consumption of 1.83 mW and at the input power of 0 dBm, the locking range is 3.3 GHz from 2.3 to 5.6 GHz. The ILFD can have two non-overlapped locking ranges or an overlapped locking range, this indicates the ILFD uses a dual-resonance resonator.

Keyphrases: divide-by-2 injection-locked frequency divider, Dual-resonance transformer-coupled resonator, overlapped locking range.

@Booklet{EasyChair:1236,
  author = {Sheng-Lyang Jang and Jui Chieh Hou and Wen-Cheng Lai},
  title = {Divide-by-2 Transformer-Based Injection-Locked Frequency Dividers with Two Active Cores},
  howpublished = {EasyChair Preprint no. 1236},

  year = {EasyChair, 2019}}