Injection-locked fractional frequency multiplier with automatic reference pulse-selection technique

• Lee Sang_yeop

  Solutions Research Laboratory, Tokyo Institute of Technology

• Ito Hiroyuki

  Solutions Research Laboratory, Tokyo Institute of Technology

• Tanoi Satoru

  Solutions Research Laboratory, Tokyo Institute of Technology

• Ishihara Noboru

  Solutions Research Laboratory, Tokyo Institute of Technology

• Masu Kazuya

  Solutions Research Laboratory, Tokyo Institute of Technology

抄録

An injection-locked fractional frequency multiplier (ILFFM) based on a ring VCO is proposed. The ILFFM can output signals whose output-frequency step equal quarter of an input reference frequency (1/4×f_ref), with low-phase-noise characteristics due to injection locking. To realize this fractional frequency multiplication, an injection pulse selection circuit is demonstrated, which can select the appropriate injection pulse trains as to the VCO output phases. The proposed circuit was fabricated in 65nm CMOS process. When a 528-MHz (f_ref) reference signal was input, output frequencies of 4.5×, 4.75×, and 5×f_ref were obtained with low phase noise. A 1-MHz-offset phase noise with injection was -113dBc/Hz at the output frequency of 2.51GHz (=4.75×f_ref).

収録刊行物

• IEICE Electronics Express

  IEICE Electronics Express 9 (21), 1624-1629, 2012

  一般社団法人 電子情報通信学会

キーワード

• injection locking
• frequency multiplier
• ring VCO
• CMOS

詳細情報

• CRID: 1390282680190421888
• NII論文ID: 130001922218
• DOI: 10.1587/elex.9.1624
• ISSN: 13492543
• Web Site: https://www.jstage.jst.go.jp/article/elex/9/21/9_1624/_pdf
• 本文言語コード: en
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