A Ring-VCO-Based Injection-Locked Frequency Multiplier with Novel Pulse Generation Technique in 65nm CMOS

Autor: Tatsuya Kamimura, Kazuya Masu, Sangyeop Lee, Satoru Tanoi, Sho Ikeda, Noboru Ishihara, Hiroyuki Ito, Norifumi Kanemaru
Rok vydání: 2012
Předmět:
Zdroj: IEICE Transactions on Electronics. :1589-1597
ISSN: 1745-1353
0916-8524
DOI: 10.1587/transele.e95.c.1589
Popis: This paper proposes a low-phase-noise ring-VCO-based frequency multiplier with a new subharmonic direct injection locking technique that only uses a time-delay cell and four MOS transistors. Since the proposed technique behaves as an exclusive OR and can double the reference signal frequency, it increases phase correction points and achieves low phase noise characteristic across the wide output frequency range. The frequency multiplier was fabricated by using 65 nm Si CMOS process. Measured 1-MHz-offset phase noise at 6.34 GHz with reference signals of 528MHz was −119 dBc/Hz.
Databáze: OpenAIRE