Title :
A new realizable structure to improve VCO linearity
Author :
Liangbing, Liu ; Yaqing, Tu
Author_Institution :
Logistical Eng. Univ., Chongqing
fDate :
Aug. 16 2007-July 18 2007
Abstract :
FM nonlinearity is the main obstacle to improve the performance of a good many VCO applications. In the paper, a universal correction model is brought up and based on the model the sources of dominant error in the correction process are analyzed. To decrease errors produced in the carrier frequency-transfer segment, a dividing frequency-delay structure of high performance, low cost is brought up based on ideas from some existent correction structures. The structure has an innovative feature, dividing frequency relativity. Simulation proves that the new structure and feature has excellent noiseproof performance and deserves further research.
Keywords :
error correction; frequency modulation; voltage-controlled oscillators; FM nonlinearity; VCO linearity; carrier frequency-transfer segment; correction process; dividing frequency-delay structure; dominant error; frequency modulation; realizable structure; universal correction model; voltage controlled oscillator; Delay; Error correction; Frequency conversion; Frequency measurement; Instruments; Linearity; Phase locked loops; Sea measurements; Signal processing; Voltage-controlled oscillators; LFMCW; VCO; dividing frequency¿delay structure; nonlinearity correction;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4351221
