Title :
Straightforward transient & noise analysis for ΣΔ PLL-based synthesizers of multiple feedback and feedforward structures
Author :
Tsang, Kenneth S H ; Ng, T.S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., China
Abstract :
This paper presents a noise analysis model, which allows basic phase noise calculations of a ΣΔ PLL fractional-N synthesizer. Calculation results on various ΣΔ orders of multiple architectures, feedback and feedforward, and on transient process, which provides quick visualization of the design methods used to minimize the required settling-time, will be presented.
Keywords :
circuit feedback; feedforward; frequency synthesizers; phase locked loops; phase noise; sigma-delta modulation; transient analysis; ΣΔ PLL fractional-N synthesizer; design method; multiple feedback structure; multiple feedforward structure; phase noise; settling time; transient analysis; Feedback; Frequency conversion; Frequency synthesizers; Phase frequency detector; Phase locked loops; Phase modulation; Phase noise; Quantization; Transient analysis; Voltage-controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2003 IEEE
Print_ISBN :
0-7803-7694-3
DOI :
10.1109/RFIC.2003.1214011
