| 基于ADF4193的UHF频率合成器设计 |
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| 引用本文： | 祝亮,王迎栋.基于ADF4193的UHF频率合成器设计[J].无线电工程,2010,40(2):44-47. |
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| 作者姓名： | 祝亮 王迎栋 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 频率合成芯片ADF4193具有小数分频和快速锁定特性。换频时通过增加电荷泵电流以扩大环路带宽,缩短了环路的锁定时间,并采用可编程开关调整环路元件参数来确保环路稳定。UHF跳频频率合成器以ADF4193为核心电路实现设计,采用ADIsimPLL软件仿真环路参数,利用低噪声运算放大器构成的电压放大器来扩大VCO的调谐电压范围,通过调整环路带宽及设计合理的PCB布局来抑制杂散,给出了实测结果。
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| 关 键 词： | 频率合成器 ADF4193 小数分频 快速锁定 |
Design on UHF Hopping Synthesizer Based on ADF4193 |
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| ZHU Liang,WANG Ying-dong.Design on UHF Hopping Synthesizer Based on ADF4193[J].Radio Engineering of China,2010,40(2):44-47. |
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| Authors: | ZHU Liang WANG Ying-dong |
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| Institution: | ZHU Liang,WANG Ying-dong(The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | Frequency synthesizer chip ADF4193 has such characteristics as fractional-N divider and fast lock.The charge pump current is increased while switching frequency to enlarge the loop bandwidth,thus shortening the loop lock time.The stability of the loop is ensured by adjusting the component parameter via the programmable switch.ADF4193 is the core circuit in UHF hopping synthesizer.The loop parameters are simulated with ADIsimPLL.Low noise operational amplifier is used as voltage amplifier to widen the tune v... |
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| Keywords: | ADF4193 |
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