Title :
High spectrum purity signal source applied in X-band radar frequency criterion generator
Author :
Yumei, Yang ; Yuxin, Zhang ; Zhou Zheng´ou
Author_Institution :
Dept. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A high spectrum purity DDS-PLL signal source applied in X-band radar frequency criterion generator is introduced. It´s specifications list the following: output frequency range 8500 MHz~9800 MHz; hopping step 1 kHz; hopping points 1,000,000; phase noise <-80 dBdHz@10 kHz. A novel and particular scheme is introduced, a good many mutual inconsistent factors can be satisfied simultaneously by using this method, and the specification´s requirements can be achieved. The scheme is based on a DDS-PLL hybrid frequency synthesizer. The measurement results are presented. On the basis of the measurement result, the distribution characteristics of the output spectrum are analyzed
Keywords :
direct digital synthesis; phase locked loops; phase noise; radar equipment; spectral analysis; 1 kHz; 8500 to 9800 MHz; DDS-PLL hybrid frequency synthesizer; DDS-PLL signal source; SHF; X-band radar frequency criterion generator; direct digital frequency synthesizer; distribution characteristics; high spectrum purity signal source; hopping points; hopping step; output frequency range; output spectrum; phase locked loops; phase noise; Circuits; Displays; Frequency conversion; Frequency synthesizers; Phase locked loops; Phase noise; Radar; Signal generators; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984859
