小型铷原子频标射频电路设计

发布时间：2017-12-31 07:36

本文关键词：小型铷原子频标射频电路设计　出处：《中国科学院大学(中国科学院武汉物理与数学研究所)》2017年硕士论文　论文类型：学位论文

【摘要】：本文的研究工作围绕铷原子频标的射频电路展开,侧重研究了射频电路对铷钟指标的影响。论文第一章扼要叙述了时间发展简史和原子频标发展史,并介绍了铷原子频标的工作原理和发展现状。文章还就铷原子频标未来的发展进行了讨论,指出铷钟在进一步小型化、低功耗以及提高指标方面尚有较大空间。由于铷钟的良好的环境适应能力和在便携式频标中出众的频率稳定性特征,无论现在还是将来,它都将有着广泛的应用。正是基于这一点,论文从第二章开始从射频链的角度出发,对微波功率波动问题展开详细讨论,并通过实验得出结论:由于温度波动影响了射频信号幅度与波形,导致微波功率波动,加大了整机的温度敏感度,制约了整机的中长期频率稳定性。论文指出同时控制射频信号幅度与波形能够有效地提高微波功率稳定性,并给出了新的射频链路及初步试验结果。此外本文还就如何降低射频链路功耗进行了研究,指出现有射频电路功耗较大的原因是微波混频环节功耗损失较大,这要求射频信号幅度足够大。降低射频链路功耗的首要任务是去掉末级的微波混频,带尾数的调制信号在前级产生,并给出了新的射频链路构架和初步试验结果。
[Abstract]:This paper focuses on the RF circuit of the rubidium atomic frequency standard, focusing on the effect of RF circuit rubidium clock indicators. The first chapter briefly describes the development history of time history and development of atomic frequency standard, and introduces the working principle and development status of the rubidium atomic frequency standard. The chapter also rubidium atomic frequency standard the future development are discussed, pointed out that the rubidium clock in further miniaturization, low power consumption and improve the index still has great space. Since the rubidium clock of good environmental adaptability and superior in portable frequencystandard frequency stability characteristics, either now or in the future, it will be widely applied. It is based on this paper starts from the point of view of the RF chain from the second chapter to start a detailed discussion on the microwave power fluctuation, and the conclusion was: due to temperature fluctuations affect the RF signal amplitude and waveform, To increase the microwave power fluctuation, temperature sensitivity, restrict the long-term frequency stability. The paper also pointed out to control the amplitude and waveform of RF signal can effectively improve the stability of microwave power, and gives a new RF link and preliminary experimental results. In addition, how to reduce the power consumption of radio links is studied. The reason is the large power consumption RF microwave mixing power link loss is bigger, the RF signal amplitude is large enough. The primary task of reducing RF link power consumption is removed at the end of a microwave mixer, with the ending of the modulation signal generated in the previous stage, and gives a new framework for RF link and preliminary test results.

【学位授予单位】：中国科学院大学(中国科学院武汉物理与数学研究所)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN702

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