微机补偿晶体振荡器
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摘要
本文主要提出了一种以微处理器为核心的基于AT切晶体谐振器的新型微机
补偿晶体振荡器（MCXO）。介绍了微机补偿晶体振荡器的构成，其各部分硬件
电路的设计和工作原理及单片机部分软件和计算机部分曲线拟合软件的设计。并
以实验结果证明了本文所述的温度补偿原理的可行性。系统中采用了微处理器这
个关键器件，充分利用其具有的资源并充分发挥软件的作用，通过软件与简单硬
件电路相配合的方法，节约了系统所需的大量硬件电路。与数字温度补偿晶体振
荡器（DTCXO）相比，本文所叙述的微机补偿晶体振荡器具有结构简单，体积
小，功耗低，造价低，开机预热时间短等优势，使其更具有竞争力。该振荡器可
在-40℃～+70℃范围内稳定工作。补偿后频率温度稳定度可达±1.5×10~(-7)。一直
以来，DTCXO由于体积大、功耗大、成本高而使其应用范围受到了很大的限制。
本文所述的微机补偿晶体振荡器，最大限度的弥补了DTCXO的不足之处，也填
补了国内微机补偿晶体振荡器这一空白。
This paper presents a new type of microcomputer compensated crystal oscillator
(MCXO) which bases on Al-cut crystal and uses microcomputer as its core. System
structure, the design of every part of hardware and software are given. The experimental
result proves the temperature compensated method is viable. Because microcomputer is
used in system, function of its software can be utilized sufficiently. Software working
with simple hardware makes a lot of hardware are saved. Comparing with digital
temperature compensated crystal oscillator (DTCXO), the MCXO introduced in this
paper has many advantages as follows, simple in structure, small in size, low in power,
low in price and short in startup time. The MCXO can output an stable frequency of
1 OMI-Iz, and after compensated it stability can arrive at ?1.5 X 1 o. Because of
DTCXO large in size, high in power and high in price, it utilization is limited. The
MCXO in this paper compensates the disadvantages of DTCXO and fills the internal
blank of MCXO.
补偿晶体振荡器（MCXO）。介绍了微机补偿晶体振荡器的构成，其各部分硬件
电路的设计和工作原理及单片机部分软件和计算机部分曲线拟合软件的设计。并
以实验结果证明了本文所述的温度补偿原理的可行性。系统中采用了微处理器这
个关键器件，充分利用其具有的资源并充分发挥软件的作用，通过软件与简单硬
件电路相配合的方法，节约了系统所需的大量硬件电路。与数字温度补偿晶体振
荡器（DTCXO）相比，本文所叙述的微机补偿晶体振荡器具有结构简单，体积
小，功耗低，造价低，开机预热时间短等优势，使其更具有竞争力。该振荡器可
在-40℃～+70℃范围内稳定工作。补偿后频率温度稳定度可达±1.5×10~(-7)。一直
以来，DTCXO由于体积大、功耗大、成本高而使其应用范围受到了很大的限制。
本文所述的微机补偿晶体振荡器，最大限度的弥补了DTCXO的不足之处，也填
补了国内微机补偿晶体振荡器这一空白。
This paper presents a new type of microcomputer compensated crystal oscillator
(MCXO) which bases on Al-cut crystal and uses microcomputer as its core. System
structure, the design of every part of hardware and software are given. The experimental
result proves the temperature compensated method is viable. Because microcomputer is
used in system, function of its software can be utilized sufficiently. Software working
with simple hardware makes a lot of hardware are saved. Comparing with digital
temperature compensated crystal oscillator (DTCXO), the MCXO introduced in this
paper has many advantages as follows, simple in structure, small in size, low in power,
low in price and short in startup time. The MCXO can output an stable frequency of
1 OMI-Iz, and after compensated it stability can arrive at ?1.5 X 1 o. Because of
DTCXO large in size, high in power and high in price, it utilization is limited. The
MCXO in this paper compensates the disadvantages of DTCXO and fills the internal
blank of MCXO.
引文
[1] 陈明逵 凌永祥．《实用计算机数值方法》．1992年6月第一版．西安交通大学出版社．1992年6月．
[2] 赵声衡．《石英晶体振荡器》．1997年10月第一版．湖南大学出版社．1997年10月．
[3] 周渭 朱根富．《频率及时间计量》．1986年9月第一版．陕西科学技术出版社．1986年9月．pp118-136．
[4] 孙涵芳 徐爱卿．《MCS—51／96系列单片机原理及应用》．1988年2月第一版．北京航空航天大学出版社．1994年1月．
[5] 黄秉英 周渭 张荫柏等．《测试计量技术手册第11卷——时间频率》．1996年10月第一版．中国计量出版社．1996年10月．pp73-82．
[6] Zhou Wei. "Systematic Reseach on High-Accuracy Frequency Measurements and Control".Shizuoka University. doctor dissertation Feb., 2000. pp15-24, 90-96
[7] S. Schodowski. "Resonator Self-Temperature-Sensing Using a Dual-Harmonic-Mode Crystal Oscillator". Proceedings of the 43~(rd) Annual Symposium on Frequency Control. 1989. pp2-7.
[8] T. Miyayama, Y.Ikeda and S.Okano. "A New Digitally Temperature Compensted Crystal Oscillator for a Mobile Telephone System".Proceedings of the 42~(nd) Annual Symposium on Frequency Control.1989. pp327-333
[9] M.E.Frerking. "Fifty Years of Progress in Quartz Crystal Frequency Standarts".Proceedings of the 1996 IEEE International Frequency Control Symposium. 1996. pp33-46
[10] R.John. Vig. "Quartz Crystal Resonator and Oscillators-For Frequency Control and Timing Applications". A tutorial. Jan., 1993.
[11] "The Crystalmaster Product Catalog". Seiko EPSON Corporation. Sep., 1997. pp10,11,65
[12] Martin Bloch, Marvin Meirs, and John Ho. "The Microcomputer Compensated Crystal Oscillator(MCXO)". Proceedings of the 43~(rd) Annual Symposium on Frequency Control.1989. pp16-19.
[13] Edward Jackson, Howard Phillips, Brian E. Rose. "The Microcomputer Compensated Crystal Oscillator-a Progress Report". Proceedings of the 1996 IEEE International Frequency Control Symposium.1996. pp678-692.
[2] 赵声衡．《石英晶体振荡器》．1997年10月第一版．湖南大学出版社．1997年10月．
[3] 周渭 朱根富．《频率及时间计量》．1986年9月第一版．陕西科学技术出版社．1986年9月．pp118-136．
[4] 孙涵芳 徐爱卿．《MCS—51／96系列单片机原理及应用》．1988年2月第一版．北京航空航天大学出版社．1994年1月．
[5] 黄秉英 周渭 张荫柏等．《测试计量技术手册第11卷——时间频率》．1996年10月第一版．中国计量出版社．1996年10月．pp73-82．
[6] Zhou Wei. "Systematic Reseach on High-Accuracy Frequency Measurements and Control".Shizuoka University. doctor dissertation Feb., 2000. pp15-24, 90-96
[7] S. Schodowski. "Resonator Self-Temperature-Sensing Using a Dual-Harmonic-Mode Crystal Oscillator". Proceedings of the 43~(rd) Annual Symposium on Frequency Control. 1989. pp2-7.
[8] T. Miyayama, Y.Ikeda and S.Okano. "A New Digitally Temperature Compensted Crystal Oscillator for a Mobile Telephone System".Proceedings of the 42~(nd) Annual Symposium on Frequency Control.1989. pp327-333
[9] M.E.Frerking. "Fifty Years of Progress in Quartz Crystal Frequency Standarts".Proceedings of the 1996 IEEE International Frequency Control Symposium. 1996. pp33-46
[10] R.John. Vig. "Quartz Crystal Resonator and Oscillators-For Frequency Control and Timing Applications". A tutorial. Jan., 1993.
[11] "The Crystalmaster Product Catalog". Seiko EPSON Corporation. Sep., 1997. pp10,11,65
[12] Martin Bloch, Marvin Meirs, and John Ho. "The Microcomputer Compensated Crystal Oscillator(MCXO)". Proceedings of the 43~(rd) Annual Symposium on Frequency Control.1989. pp16-19.
[13] Edward Jackson, Howard Phillips, Brian E. Rose. "The Microcomputer Compensated Crystal Oscillator-a Progress Report". Proceedings of the 1996 IEEE International Frequency Control Symposium.1996. pp678-692.