CN107666285A - 一种小型化高频率压控振荡器 - Google Patents
一种小型化高频率压控振荡器 Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/1275—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator having further means for varying a parameter in dependence on the frequency
- H03B5/129—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator having further means for varying a parameter in dependence on the frequency the parameter being a bias voltage or a power supply
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/24—Frequency- independent attenuators
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
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Abstract
本发明公开了一种小型化高频率压控振荡器,包括滤波电路、LC调谐电路、振荡电路、衰减电路和输出匹配网络,所述滤波电路,实现杂波抑制,且滤波电路分别与直流电源和控制电源电性输入连接;所述LC调谐电路,其与振荡电路相连控制频率输出范围;所述振荡电路,产生相应正弦波振荡信号,且滤波电路与振荡电路电性连接;所述衰减电路,调整信号传输通路上的信号电平,且衰减电路与输出匹配网络电性连接;所述输出匹配网络,实现对频率的选择和滤波作用,且输出匹配网络7与输出模块8电性连接。该小型化高频率压控振荡器,具有体积小、频率高、频率范围宽、工作稳定可靠等优点。
Description
技术领域
本发明涉及频率合成及锁相合成技术领域,具体为一种小型化高频率压控振荡器。
背景技术
在现代电子通信系统中,收发信机大量采用频率合成器作为本振,压控振荡器作为频率合成的关键组成部分应用于频合单元中,输出稳定信号。
现代通信系统频率不断增加,小型化要求不断提高,现有的压控振荡器体积大、频率低,不利于信号的合成与处理,针对上述情况,在现有压控振荡器的基础上进行技术创新。
发明内容
本发明的目的在于提供一种小型化高频率压控振荡器,以解决上述背景技术中提出一般的压控振荡器体积大、频率低,不利于信号的合成与处理的问题。
为实现上述目的,本发明提供如下技术方案:一种小型化高频率压控振荡器,包括滤波电路、LC调谐电路、振荡电路、衰减电路和输出匹配网络,
所述滤波电路,实现杂波抑制,且滤波电路分别与直流电源和控制电源电性输入连接;
所述LC调谐电路,其与振荡电路相连控制频率输出范围;
所述振荡电路,产生相应正弦波振荡信号,且滤波电路与振荡电路电性连接;
所述衰减电路,调整信号传输通路上的信号电平,且衰减电路与输出匹配网络电性连接;
所述输出匹配网络,实现对频率的选择和滤波作用,且输出匹配网络与输出模块电性连接。
优选的,所述滤波电路采用电容、电感滤波电路。
优选的,所述LC调谐电路采用变容二极管与振荡电路中可调谐元件相连。
优选的,所述振荡电路采用克拉泼振荡电路,且电路中振荡管采用晶体管,而且电感采用高Q值贴片电感。
优选的,所述衰减电路采用电阻性衰减网络构成π型衰减器,信号衰减3dB,阻抗50Ω。
优选的,所述输出匹配网络采用π型LC匹配网络,实现对频率的选择和滤波作用。
与现有技术相比,本发明的有益效果是:该小型化高频率压控振荡器。
附图说明
图1为本发明结构示意图;
图2为本发明结构电振荡电路示意图;
图3为本发明结构LC调谐电路示意图。滤波电路(1)、直流电源(2)、控制电源(3)、LC调谐电路(4)、振荡电路(5)、衰减电路(6)、输出匹配网络(7)、输出模块(8)
图中:1、,2、,3、,4、,5、,6、,7、,8、,9、,10、,11、,12、,13、,14、,15、,16、,17、,18、,19、,20、,21、,22、,23、。
具体实施方式
为了使本发明的技术方案及优点更加清楚明白,以下结合附图,对本发明进行进一步详细说明。
参见图1,本发明提供一种小型化高频率压控振荡器,工作频率为1160MHz~1610MHz,用于超短波电台频率合成单元,采用表面贴结构,由带元件的印制板与壳体组成,印制板四周留镀涂半圆过孔,电源、输出、控制端端子与地绝缘,便于表面贴装,印制板电路部分实现小型化高频率压控振荡器所有功能,由滤波电路1、LC调谐电路4、振荡电路5、衰减电路6、输出匹配网络7等组成,壳体四边中心处留小脚,扣于印制板上,与印制板接触部分用锡封,压控振荡器在外部直流电源5V及控制电压0.5V~4.5V供电工作时,产生1160MHz~1610MHz正弦波频率信号。
优选的,滤波电路1采用电容、电感滤波电路,与为振荡单元供电的直流电源2和作用于压控元件的控制电源3相连,起到杂波抑制和消除电源纹波对电路影响的作用,降低外部引起的噪声。
参见图2,振荡电路5采用克拉泼振荡电路,与LC调谐电路4共同产生正弦波频率信号,振荡管采用晶体管V1,有利于提高频率稳定度与幅度,同时功率增益高,噪声小,电感采用高Q值贴片电感,振荡信号噪声小。
参见图3,可变电抗元件变容管与振荡电路5中调谐元件相连共同组成LC调谐电路4,控制振荡器频率变化范围,本发明采用高Q值的贴片变容二极管,反向连接,振荡器工作时,变容管随反向控制电压增大而容值减小,反映到振荡单元中频率信号由小到大,从而实现输出规定范围内的频率信号,通过V2、V3、V4、V5变容管的优化组合达到调节频率范围的目的,同时兼顾高低端幅度的输出。
优选的,衰减电路6,本发明在振荡电路后接入了衰减电路6,其目的是调节电路的传输电平,改善电路的阻抗匹配,采用电阻性衰减网络构成π型衰减器,信号衰减3dB,阻抗50Ω。
优选的,输出匹配网络7,本发明在频率信号输出端采用了π型LC匹配网络,其主要作用是抑制工作频率范围以外的无用高频信号及杂波,控制谐波分量,同时可调节高低端输出幅度。
本发明壳体扣于振荡器印制板上,与印制板接触部分用锡封焊,壳体为金属导热材料,具有良好的接地和导热性能,并能减小内部电子元件之间的电磁干扰。
本发明小型化高频率压控振荡器经过测试与使用,其控制简单、体积小、频率高、调谐范围宽、工作稳定可靠,能满足频率合成单元的使用,改善超短波电台性能。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (6)
1.一种小型化高频率压控振荡器,包括滤波电路(1)、LC调谐电路(4)、振荡电路(5)、衰减电路(6)和输出匹配网络(7),其特征在于:
所述滤波电路(1),实现杂波抑制,且滤波电路(1)分别与直流电源(2)和控制电源(3)电性输入连接;
所述LC调谐电路(4),其与振荡电路(5)相连控制频率输出范围;
所述振荡电路(5),产生相应正弦波振荡信号,且滤波电路(1)与振荡电路(5)电性连接;
所述衰减电路(6),调整信号传输通路上的信号电平,且衰减电路(6)与输出匹配网络(7)电性连接;
所述输出匹配网络(7),实现对频率的选择和滤波作用,且输出匹配网络(7)与输出模块(8)电性连接。
2.根据权利要求1所述的一种小型化高频率压控振荡器,其特征在于:所述滤波电路(1)采用电容、电感滤波电路。
3.根据权利要求1所述的一种小型化高频率压控振荡器,其特征在于:所述LC调谐电路(4)采用变容二极管与振荡电路中可调谐元件相连。
4.根据权利要求1所述的一种小型化高频率压控振荡器,其特征在于:所述振荡电路(5)采用克拉泼振荡电路,且电路中振荡管采用晶体管,而且电感采用高Q值贴片电感。
5.根据权利要求1所述的一种小型化高频率压控振荡器,其特征在于:所述衰减电路(6)采用电阻性衰减网络构成π型衰减器,信号衰减3dB,阻抗50Ω。
6.根据权利要求1所述的一种小型化高频率压控振荡器,其特征在于:所述输出匹配网络(7)采用π型LC匹配网络,实现对频率的选择和滤波作用。
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CN109600124A (zh) * | 2018-12-29 | 2019-04-09 | 厦门英诺迅科技有限公司 | 一种压控调谐选频网络 |
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CN201550100U (zh) * | 2009-12-05 | 2010-08-11 | 西北师范大学 | 一种基于变容二极管的频率合成系统 |
CN203563052U (zh) * | 2013-09-04 | 2014-04-23 | 宝鸡烽火诺信科技有限公司 | 低相噪压控振荡器 |
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CN201550100U (zh) * | 2009-12-05 | 2010-08-11 | 西北师范大学 | 一种基于变容二极管的频率合成系统 |
CN203563052U (zh) * | 2013-09-04 | 2014-04-23 | 宝鸡烽火诺信科技有限公司 | 低相噪压控振荡器 |
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