Dual-Band CMOS Injection-Locked Frequency Divider with Variable Division Ratio

• JANG Sheng-Lyang

  Dept. of Electronic Engineering, National Taiwan University of Science and Technology

• LIN Chih-Yeh

  Dept. of Electronic Engineering, National Taiwan University of Science and Technology

• LIU Cheng-Chen

  Dept. of Electronic Engineering, National Taiwan University of Science and Technology

• HUANG Jhin-Fang

  Dept. of Electronic Engineering, National Taiwan University of Science and Technology

Abstract

A dual band 0.18µm CMOS LC-tank injection locked frequency divider (ILFD) is proposed. The ILFD circuit is realized with a cross-coupled pMOS LC-tank oscillator with an inductor switch for frequency band selection. The self-oscillating VCO is injection-locked by nth-harmonic input to obtain the division factor of n. The division ratio of 1, 2, and 3 has been found for the proposed ILFD. Measurement results show that at the supply voltage of 1.1V, the free-running frequency is from 2.28(3.09)GHz to 2.78(3.72)GHz for the low- (high-) frequency band. The power consumption of the ILFD core is 3.7mW (6.2mW) at low (high) band. The total area including the output buffer and the pads is 0.841 × 0.764mm².

Journal

• IEICE Transactions on Electronics

  IEICE Transactions on Electronics E92-C (4), 550-557, 2009

  The Institute of Electronics, Information and Communication Engineers

Keywords

• dual-band
• injection-locked frequency divider
• 0.18µm CMOS
• LC-tank oscillator

Details

• CRID: 1390001204374642176
• NII Article ID: 10026821767
• NII Book ID: AA10826283
• DOI: 10.1587/transele.e92.c.550
• ISSN: 17451353
• ISSN: 09168524
• Web Site: http://www.jstage.jst.go.jp/article/transele/E92.C/4/E92.C_4_550/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed