1. All-Digital Frequency Synthesizer Using a Flying Adder
- Author
-
Gang-Neng Sung, Szu-Chia Liao, Jian-Ming Huang, Yu-Cheng Lu, and Chua-Chin Wang
- Subjects
Frequency synthesizer ,Phase-locked loop ,Engineering ,Adder ,Dual-modulus prescaler ,Signal generator ,Direct digital synthesizer ,business.industry ,Frequency multiplier ,Electronic engineering ,Electrical and Electronic Engineering ,business ,Jitter - Abstract
This brief presents an all-digital frequency synthesizer based on the flying adder (FA) architecture. The FA is a fascinating architecture for frequency synthesizer designs due to its simplicity and effectiveness. The FA-based frequency synthesizer can simply use a set of multiple phase reference signals to generate a desired frequency to achieve fast frequency switching. In the proposed work, the frequency synthesizer adopts an all-digital phase-locked loop to provide a steady reference signal for the FA. The proposed frequency synthesizer is implemented in a standard 0.18-μm CMOS cell-based technology, and the core area is 0.16 mm2. The output frequency range is 39.38-226 MHz, and the peak-to-peak jitter is less than 130 ps.
- Published
- 2010