Open Access1–2 GHz 2 mW injection‐locked ring oscillator based phase shifter in 0.18 µm CMOS technology
Author(s) -
Jin Cai Long,
Yu Xiao Peng,
Sui WenQuan
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.2501
Subject(s) - phase shift module , ring oscillator , cmos , materials science , clock generator , electrical engineering , voltage , generator (circuit theory) , phase (matter) , optoelectronics , electronic engineering , power (physics) , engineering , physics , insertion loss , jitter , clock signal , quantum mechanics
A new phase shifter based on injection‐locked ring oscillator is proposed. By using a multi‐stage phase generator with voltage‐controlled injection locking technique, the proposed phase shifter is able to generate a flexible combination of coarse and fine‐tuned phase delays over a wide range of operating frequencies while a small silicon area is maintained. Fabricated in a 0.18 µm RF CMOS process which only occupies 50 × 40 µm, a proposed three‐stage phase shifter achieves flexible phase delays and a measured operating frequency up to 2 GHz with a maximum power consumption of 2 mW from a 1.8 V supply.