Open AccessKa‐band wideband VCO with LC filtering technique in 65‐nm CMOS
Author(s) -
Ding Tianao,
Fan Xiangning,
Zhao Dixian
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.0040
Subject(s) - voltage controlled oscillator , wideband , phase noise , cmos , dbc , pmos logic , capacitor , electrical engineering , offset (computer science) , lc circuit , electronic engineering , materials science , voltage , engineering , computer science , transistor , programming language
This Letter reports a 25.80–30.84 GHz wideband millimetre‐wave VCO in 65‐nm CMOS technology. A 4‐bit binary‐weighted capacitor bank is used to extend the tuning range. The PMOS current source, as well as the LC noise filtering network, are used to improve the phase‐noise performance. Occupying a core area of 0.056 mm 2 , the implemented VCO core consumes 4.1 mW at a 1 V supply. At 26 GHz, it achieves a phase noise of −102.8 dBc/Hz at 1 MHz offset.