Ultralow phase noise microwave generation with an Er:fiber-based optical frequency divider
, 2011 We present an optical frequency divider based on a 200 MHz repetition rate Er:fiber mode-locked laser that, when locked to a stable optical frequency reference, generates microwave signals with absolute phase noise that is equal to or better than ...
Andrew D. Ludlow +23 more
core +1 more source
A 0.8 V Low-Power Wide-Tuning-Range CMOS VCO for 802.11ac and IoT C-Band Applications
Journal of Low Power Electronics and ApplicationsThis paper presents a 0.8 V low-power CMOS voltage-controlled oscillator (VCO) with a wide tuning range, fabricated using a TSMC 0.18 μm process. The proposed design incorporates body-biasing techniques and an optimized varactor structure to achieve a ...
Jung-Jen Hsu +2 more
doaj +1 more source
Noise characterization of an Optical Frequency Comb using Offline Cross-Correlation
, 2016 Using an offline cross-correlation technique, we have analyzed the noise behavior of a new type of optical frequency comb (OFC), which is carrier envelope offset (CEO) free by configuration, due to difference frequency generation.
Champenois, Caroline +8 more
core +2 more sources
Design issues in CMOS differential LC oscillators [PDF]
, 1999 An analysis of phase noise in differential cross-coupled inductance-capacitance (LC) oscillators is presented. The effect of tail current and tank power dissipation on the voltage amplitude is shown.
Hajimiri, Ali, Lee, Thomas H.
core +1 more source
Over-the-Air Phase Noise Spectral Density Measurement for FMCW Radar Sensors
IEEE Journal of MicrowavesPhase noise significantly degrades the performance of frequency-modulated continuous wave (FMCW)- and chirp sequence (CS)-based radar sensors. Knowledge of the power spectral density (PSD) of these sensors is therefore essential for estimating their ...
Christoph Birkenhauer +2 more
doaj +1 more source
Phase Noise of the Radio Frequency (RF) Beatnote Generated by a Dual-Frequency VECSEL
, 2013 We analyze, both theoretically and experimentally, the phase noise of the radio frequency (RF) beatnote generated by optical mixing of two orthogonally polarized modes in an optically pumped dual-frequency Vertical External Cavity Surface Emitting Laser (
Alouini, Mehdi +8 more
core +3 more sources
A Noise-Shifting Differential Colpitts VCO [PDF]
, 2002 A novel noise-shifting differential Colpitts VCO is presented. It uses current switching to lower phase noise by cyclostationary noise alignment and improve the start-up condition.
Aparicio, Roberto, Hajimiri, Ali
core
Design of Digital Communications for Strong Phase Noise Channels
IEEE Open Journal of Vehicular Technology, 2020 To meet the requirements of beyond 5G networks, the significant amount of unused spectrum in sub-TeraHertz frequencies is contemplated for high-rate wireless communications.
Simon Bicais, Jean-Baptiste Dore
doaj +1 more source
Intrinsic 1/f device noise reduction and its effect on phase noise in CMOS ring oscillators [PDF]
, 1999 This paper gives experimental proof of an intriguing physical effect: periodic on-off switching of MOS transistors in a CMOS ring oscillator reduces their intrinsic 1/f noise and hence the oscillator's close-in phase noise. More specifically, it is shown
Gierkink, Sander L.J. +6 more
core +2 more sources
Method for Phase Noise Impact Compensation in 60 GHz OFDM Receivers [PDF]
Radioengineering, 2020 This paper presents a method for phase noise impact compensation in 60 GHz OFDM receivers and provides the results of performance evaluation using OFDM PHY parameters defined in the IEEE 802.11ay standard.
A. Lomayev +4 more
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