Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6945129 | Microelectronics Journal | 2018 | 6 Pages |
Abstract
This paper proposes a new biasing technique for LC-based voltage controlled oscillators to improve the phase noise performance while ensuring the current variations to be within an acceptable range. The proposed technique uses a feedback loop and a LDO to generate, sense, and regulate the output current. The oscillator has 33.3% tuning range around a center frequency of 2.4 GHz. The proposed design achieves â127.2 dBc/Hz phase noise at 1 MHz offset from 2.25 GHz while consuming 3.36 mA from a 3.3-V supply. The circuit was implemented in 65 nm UMC CMOS process. The results show that the circuit has FoM of â183.8 dBc/Hz and FoMT of â194.5 dBc/Hz at 1 MHz offset, and the current variation across PVT is within +68 µA to â63 µA range.
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Hardware and Architecture
Authors
Ihsan F.I. Albittar, Hakan Dogan, Mehmet T. Ozgun,