A Wide Tuning Range CMOS Quadrature Ring Oscillator with Improved FoM for Inductorless Reconfigurable PLL

• POKHAREL Ramesh K.

  Kyushu University

• LINGALA Shashank

  Kyushu University

• ANAND Awinash

  Kyushu University

• NUGROHO Prapto

  Kyushu University

• TOMAR Abhishek

  Kyushu University

• KANAYA Haruichi

  Kyushu University

• YOSHIDA Keiji

  Kyushu University

Abstract

This paper presents the design and implementation of a quadrature voltage-controlled ring oscillator with the improved figure of merit (FOM) using the four single-ended inverter topology. Furthermore, a new architecture to prevent the latch-up in even number of stages composed of single-ended ring inverters is proposed. The design is implemented in 0.18µm CMOS technology and the measurement results show a FOM of -163.8dBc/Hz with the phase noise of -125.8dBc/Hz at 4MHz offset from the carrier frequency of 3.4GHz. It exhibits a frequency tuning range from 1.23GHz to 4.17GHz with coarse and fine frequency tuning sensitivity of 1.08MHz/mV and 120kHz/mV, respectively.

Journal

• IEICE Transactions on Electronics

  IEICE Transactions on Electronics E94-C (10), 1524-1532, 2011

  The Institute of Electronics, Information and Communication Engineers

Keywords

• frequency tuning sensitivity
• feed forward technique
• figure of merit
• phase noise
• ring oscillator
• reconfigurable wireless system quadrature outputs
• 0.18µm CMOS

Details

• CRID: 1390001204376217600
• NII Article ID: 10030189662
• NII Book ID: AA10826283
• DOI: 10.1587/transele.e94.c.1524
• ISSN: 17451353
• ISSN: 09168524
• Web Site: http://www.jstage.jst.go.jp/article/transele/E94.C/10/E94.C_10_1524/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed