Z. Zong
13 records found
1
Authored
This article introduces a low-jitter low-spur fractional-N phase-locked loop (PLL) adopting a new concept of a time-mode arithmetic unit (TAU) for phase error extraction. The TAU is a time-signal processor that calculates the weighted sum of input time offsets. It processes tw ...
Millimeter-wave (mm-wave) frequency synthesizers in complementary metal oxide-semiconductor (CMOS) suffer from poor phase noise (PN), limited tuning range (TR) and high-power consumption. They are the key subsystems that typically limit the performance of mm-wave transceivers. ...
In this paper, we propose a method to suppress supply pushing of an LC oscillator such that it may directly operate from a switched-mode dc-dc converter generating fairly large ripples. A ripple replication block (RRB) generates an amplified ripple replica at the gate terminal ...
In this paper, we propose a 60-GHz fractional-N digital frequency synthesizer aimed at reducing its phase noise (PN) at both the flicker (1/f 3 ...
This article proposes a power-efficient highly linear capacitor-array-based digital-to-time converter (DTC) using a charge redistribution constant-slope approach. A fringe-capacitor-based digital-to-analog converter (C-DAC) array is used to regulate the starting supply voltage ...
This paper presents a digitally controlled frequency generator for dual frequency-band radar system that is optimized for 16 nm FinFET CMOS. It is based on a 21% wide tuning range,fine-resolution DCO with only switchable metal capacitors. A third-harmonic boosting DCO simultan ...
Subharmonic residual in LO can degrade the performance of RF/mm-wave transceivers that employ frequency multipliers for LO generation. In this paper, we analyze the side effects that such subharmonics can cause. The effects are categorized to three parts: distortions in the up ...