1–2 GHz 2 mW injection-locked ring oscillator based phase shifter in 0.18 µm CMOS technology

1–2 GHz 2 mW injection-locked ring oscillator based phase shifter in 0.18 µm CMOS technology

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

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.


    1. 1)
      • 1. Itoh, Y., Murata, T.: ‘An L-band SiGe HBT differential variable phase shifter with a combination of analog and digital phase control’. IEEE Asia Pacific Microwave Conf., December 2009, pp. 15891592.
    2. 2)
      • 2. Tseng, W.J., Tsai, Z.M., Lin, C.S., Wang, H.: ‘Ku-band phase shifter based on injection locked voltage oscillator’. IEEE Conf. on Wireless Information Technology and Systems, 2010, pp. 14.
    3. 3)
      • 3. Xiao, Q.: ‘A compact L-band broadband 6-bit MMIC phase shifter with low phase error’. European Microwave Integrated Circuits Conf. (EuMIC), Manchester, October, 2011, pp. 410413.
    4. 4)
    5. 5)
    6. 6)

Related content

This article has following corresponding article(s):
in brief
This is a required field
Please enter a valid email address