设计了一款低相噪蓝宝石振荡器并对其进行温度控制,基于蓝宝石谐振器理论,采用有限元仿真软件完成了蓝宝石谐振器设计.蓝宝石谐振器实测中心频率为 9.84 GHz,有载Q值 113000.将该蓝宝石谐振器作为选频网络与放大器、滤波器、移相器和耦合器构成低相噪蓝宝石振荡器.振荡器的输出工作频率 9.84 GHz,输出功率 9 dBm,偏离载波 1 kHz处相位噪声为-117 dBc/Hz,偏离载波 10 kHz处相位噪声为-144 dBc/Hz,偏离载波100 kHz处相位噪声为-161 dBc/Hz.该振荡器有助于提高雷达对于低慢小目标的检测能力.
The paper presents the design and temperature control of a low phase noise sapphire oscillator.Utilizing the theory of sapphire resonator,finite element simulation software is employed to accomplish the design process.The measured center frequency of the sapphire resonator is 9.84 GHz with a loaded Q value of 113000.By utilizing the sapphire resonator as a frequency selection network along with components such as amplifier,filter,phase shifter and coupler,a low-noise sapphire oscillator is constructed.The output frequency of this oscillator is 9.84 GHz with an output power of 9 dBm.It exhibits excellent performance in terms of phase noise:-117 dBc/Hz at 1 kHz deviation from the carrier,-144 dBc/Hz at 10 kHz deviation from the carrier,and-161 dBc/Hz at 100 kHz deviation from the carrier.This oscillator significantly enhances radar capabilities for the detection of low-speed and small targets.
刘盈;刘绍阳;郭婉婷;熊宜松;李月;李鑫;曾成;宁俊松;补世荣;王占平;张晓雨
电子科技大学光电科学与工程学院,成都 611731
电子信息工程
低慢小目标检测;蓝宝石谐振器;回音壁模式;相位噪声;振荡器
low-slow small object detection;sapphire resonator;whispering gallery modes;phase noise;oscillator
《强激光与粒子束》 2024 (003)
19-23 / 5
国家自然科学基金项目(62371100)
10.11884/HPLPB202436.230343
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