2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)最新文献
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234868
Tiantian Shi, D. Pan, Jingbiao Chen
We have proposed a new scheme for the realization of an excellent active optical frequency standard by utilizing fast and slow twice cavity-locking technique in dual-wavelength active optical clock. The performance is expected to achieve the short term stability of $3.8times 10^{-16}$ at 1 s and long-term stability of 10−18 magnitude. Also, the linewidth is expected to reach the quantum limited linewidth with the frequency shift of $7.1times 10^{-5} text{Hz}/mathrm{s}$. The system includes four main technologies: dual-wavelength active optical clock, Pound-Drever-Hall technique, phase-stabilized femtosecond laser comb and high speed feedback technique. The cavity length is relocked through slow and fast feedback to two piezoelectric translators of the main-cavity. Therefore, the residual cavity-pulling effect influencing the long-term frequency stability in four-level active optical clock can be suppressed by square times of the bad-cavity coefficient. The frequency stability and the frequency shift of the active optical frequency standard are expected to be two orders and four orders of magnitude better than the ultra-stable reference cavity laser, respectively.
{"title":"The Suppressed Cavity-Pulling Effect in Dual-Wavelength Active Optical Clock Based on Twice Cavty-Locking Technique","authors":"Tiantian Shi, D. Pan, Jingbiao Chen","doi":"10.1109/IFCS-ISAF41089.2020.9234868","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234868","url":null,"abstract":"We have proposed a new scheme for the realization of an excellent active optical frequency standard by utilizing fast and slow twice cavity-locking technique in dual-wavelength active optical clock. The performance is expected to achieve the short term stability of $3.8times 10^{-16}$ at 1 s and long-term stability of 10−18 magnitude. Also, the linewidth is expected to reach the quantum limited linewidth with the frequency shift of $7.1times 10^{-5} text{Hz}/mathrm{s}$. The system includes four main technologies: dual-wavelength active optical clock, Pound-Drever-Hall technique, phase-stabilized femtosecond laser comb and high speed feedback technique. The cavity length is relocked through slow and fast feedback to two piezoelectric translators of the main-cavity. Therefore, the residual cavity-pulling effect influencing the long-term frequency stability in four-level active optical clock can be suppressed by square times of the bad-cavity coefficient. The frequency stability and the frequency shift of the active optical frequency standard are expected to be two orders and four orders of magnitude better than the ultra-stable reference cavity laser, respectively.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"12 2 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78133421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234813
G. Belotelov, D. Sutyrin, S. Slyusarev
We present the transportable and portable ytterbium optical lattice clocks modules, which are developing at FSUE “VNIIFTRI”. The aim of our work is to improve such characteristics of the optical frequency standard as compactness, mass, power efficiency while maintaining values of relative stability and frequency accuracy of laboratory optical lattice clocks.
{"title":"Development of Transportable and Portable Optical Lattice Clocks on Ytterbium Atoms","authors":"G. Belotelov, D. Sutyrin, S. Slyusarev","doi":"10.1109/IFCS-ISAF41089.2020.9234813","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234813","url":null,"abstract":"We present the transportable and portable ytterbium optical lattice clocks modules, which are developing at FSUE “VNIIFTRI”. The aim of our work is to improve such characteristics of the optical frequency standard as compactness, mass, power efficiency while maintaining values of relative stability and frequency accuracy of laboratory optical lattice clocks.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"58 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77211224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234814
Chun–Pu Tsai, Jia-Ren Liu, Wei-Chang Li
Frequency stability of micromechanical resonators operating in the nonlinear tapping mode was investigated. In particular, a CC-beam oxide-rich resonator based on a CMOS-MEMS process platform exhibits higher frequency stability at the bifurcation points in the nonlinear tapping frequency transmissions, yielding a ∼2× improvement of short-term Allen deviation compared to that at the midpoint of the tapping regime and that operating under the regular nonlinear spring softening (not entering the tapping mode yet). Differing from the previous studies on stability of MEMS resonators in either nonlinear softening or hardening condition [1] [2], this work explores the frequency stability deeper into the tapping mode of MEMS resonators—essentially behaving as resoswitches with no electrical current flowing through the contact—where the devices are subject to highly nonlinear repulsive forces due to impact. The results would help facilitate not only the understanding of the nonlinear dynamics of resoswitches but also the determination of optimum operating points of the devices.
{"title":"Experimental Study on Frequency Stability of Micromechanical Resonators Operating in the Nonlinear Tapping Mode","authors":"Chun–Pu Tsai, Jia-Ren Liu, Wei-Chang Li","doi":"10.1109/IFCS-ISAF41089.2020.9234814","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234814","url":null,"abstract":"Frequency stability of micromechanical resonators operating in the nonlinear tapping mode was investigated. In particular, a CC-beam oxide-rich resonator based on a CMOS-MEMS process platform exhibits higher frequency stability at the bifurcation points in the nonlinear tapping frequency transmissions, yielding a ∼2× improvement of short-term Allen deviation compared to that at the midpoint of the tapping regime and that operating under the regular nonlinear spring softening (not entering the tapping mode yet). Differing from the previous studies on stability of MEMS resonators in either nonlinear softening or hardening condition [1] [2], this work explores the frequency stability deeper into the tapping mode of MEMS resonators—essentially behaving as resoswitches with no electrical current flowing through the contact—where the devices are subject to highly nonlinear repulsive forces due to impact. The results would help facilitate not only the understanding of the nonlinear dynamics of resoswitches but also the determination of optimum operating points of the devices.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"136 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76386966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234927
Dubari Borah, Aarushi Gupta, T. Kalkur
In this paper, a novel architecture of passive adaptive differential equalizer is reported. The proposed architecture has a fixed PCB layout, yet it provides bandwidth control of the frequency response using a ferroelectric tunable capacitor. The equalizer circuit occupies an area of 5 mm2 and demonstrates a wide tuning range of 1 GHz for a DC bias range of 1-10V.
{"title":"Ferroelectric Capacitor based Adaptive Differential Equalizer","authors":"Dubari Borah, Aarushi Gupta, T. Kalkur","doi":"10.1109/IFCS-ISAF41089.2020.9234927","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234927","url":null,"abstract":"In this paper, a novel architecture of passive adaptive differential equalizer is reported. The proposed architecture has a fixed PCB layout, yet it provides bandwidth control of the frequency response using a ferroelectric tunable capacitor. The equalizer circuit occupies an area of 5 mm2 and demonstrates a wide tuning range of 1 GHz for a DC bias range of 1-10V.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"14 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72674158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234855
Alexis Bougaud, Aliou Ly, G. Bailly, Arnaud Fernandez, O. Llopis
We report the optimization of a 30 GHz COEO by using an all polarization maintaining fiber (PMF) to design its optical loop. We unexpectedly found that polarization mode dispersion (PMD) can have detrimental effects on the COEO performances. Indeed, with a 400 m SMF fiber spool in the optical cavity, a phase noise level as low as −115 dBc/Hz at 1 kHz offset frequency was obtained. Conversely, with a PMF fiber spool, only a phase noise level as low as −100 dBc/Hz and −70 dBc/Hz at 1 kHz offset frequency for a 200 m PMF and 400 m PMF could be obtained respectively. PMD sets therefore an upper limit on the length of the PMF fiber that could be used.
本文报道了一种采用全保偏光纤(PMF)设计其光环路的30 GHz COEO优化方案。我们意外地发现偏振模色散(PMD)会对COEO性能产生不利影响。实际上，在光腔中使用400 m的SMF光纤线轴，在1 kHz偏移频率下获得的相位噪声水平低至- 115 dBc/Hz。相反，使用PMF光纤线轴，在1 kHz偏置频率下，200 m PMF和400 m PMF分别只能获得低至- 100 dBc/Hz和- 70 dBc/Hz的相位噪声电平。因此，PMD设置了可以使用的PMF光纤长度的上限。
{"title":"Effects of Polarization Mode Dispersion on an All Polarization Maintaining Fibers Based Coupled Optoelectronic Oscillator","authors":"Alexis Bougaud, Aliou Ly, G. Bailly, Arnaud Fernandez, O. Llopis","doi":"10.1109/IFCS-ISAF41089.2020.9234855","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234855","url":null,"abstract":"We report the optimization of a 30 GHz COEO by using an all polarization maintaining fiber (PMF) to design its optical loop. We unexpectedly found that polarization mode dispersion (PMD) can have detrimental effects on the COEO performances. Indeed, with a 400 m SMF fiber spool in the optical cavity, a phase noise level as low as −115 dBc/Hz at 1 kHz offset frequency was obtained. Conversely, with a PMF fiber spool, only a phase noise level as low as −100 dBc/Hz and −70 dBc/Hz at 1 kHz offset frequency for a 200 m PMF and 400 m PMF could be obtained respectively. PMD sets therefore an upper limit on the length of the PMF fiber that could be used.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"19 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81185018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234948
G. Kvashnin, B. Sorokin, S. Burkov
We study in detail both experimentally and theoretically Lamb-like wave excitation up to 7.3 GHz in the piezoelectric layered structures “Me-IDT/AlN/(100) diamond” ($text{Me} =text{Pt}$, Al) configured as a SAW resonator. Theoretical investigation identifying Lamb wave types by Finite Element Modeling as well as by direct solution of the characteristic equations has been fulfilled. Resonance curves for Lamb-like waves have a higher quality factor $Q$ compared to surface acoustic waves propagating on the same substrates. We observed experimentally an unusual effect of a significant increasing in $Q$-factor of Lamb wave resonance curves with frequency, from a value of 760 at 1.5 GHz to 3,400 at ∼7 GHz. It was shown that the peculiarities of Lamb wave excitation were closely connected with IDT diffraction effects.
{"title":"Peculiarities of Microwave Lamb Wave Excitation in Composite SAW Resonator Based on Diamond Substrate","authors":"G. Kvashnin, B. Sorokin, S. Burkov","doi":"10.1109/IFCS-ISAF41089.2020.9234948","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234948","url":null,"abstract":"We study in detail both experimentally and theoretically Lamb-like wave excitation up to 7.3 GHz in the piezoelectric layered structures “Me-IDT/AlN/(100) diamond” ($text{Me} =text{Pt}$, Al) configured as a SAW resonator. Theoretical investigation identifying Lamb wave types by Finite Element Modeling as well as by direct solution of the characteristic equations has been fulfilled. Resonance curves for Lamb-like waves have a higher quality factor $Q$ compared to surface acoustic waves propagating on the same substrates. We observed experimentally an unusual effect of a significant increasing in $Q$-factor of Lamb wave resonance curves with frequency, from a value of 760 at 1.5 GHz to 3,400 at ∼7 GHz. It was shown that the peculiarities of Lamb wave excitation were closely connected with IDT diffraction effects.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"64 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90554464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234882
Weibin Xie, Qing Wang, Xuan He, X. Qi, Xuzong Chen
The main factors that affect the life of the cesium beam tube include the maintenance of vacuum degree inside the tube, the absorption capacity of cesium adsorbent and the cesium storage capacity of the cesium oven. For the magnetic state selection cesium beam tube, the life of the electron multiplier should also be considered. With the development of technology, the effect of cesium adsorbent and the maintenance of vacuum degree on the life of the beam tube have been very small, as the commercial optical pumping cesium beam tube (OPCBT) adopts the method of optical detection, the life of OPCBT can be calculated without considering the influence of multiplier. Therefore, this article focuses on flow and distribution of cesium atoms ejected from the cesium oven of OPCBT, points out the quantitative relationship among the oven temperature, the amount of cesium elemental and the life of cesium beam tube. According to the distribution of cesium atom, the utilization ratio of cesium atom was obtained, which provides a theoretical basis for the design of OPCBT structure.
{"title":"Research on Utilization Rate of Cesium Atoms in Optically Pumped Cesium Beam Tube","authors":"Weibin Xie, Qing Wang, Xuan He, X. Qi, Xuzong Chen","doi":"10.1109/IFCS-ISAF41089.2020.9234882","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234882","url":null,"abstract":"The main factors that affect the life of the cesium beam tube include the maintenance of vacuum degree inside the tube, the absorption capacity of cesium adsorbent and the cesium storage capacity of the cesium oven. For the magnetic state selection cesium beam tube, the life of the electron multiplier should also be considered. With the development of technology, the effect of cesium adsorbent and the maintenance of vacuum degree on the life of the beam tube have been very small, as the commercial optical pumping cesium beam tube (OPCBT) adopts the method of optical detection, the life of OPCBT can be calculated without considering the influence of multiplier. Therefore, this article focuses on flow and distribution of cesium atoms ejected from the cesium oven of OPCBT, points out the quantitative relationship among the oven temperature, the amount of cesium elemental and the life of cesium beam tube. According to the distribution of cesium atom, the utilization ratio of cesium atom was obtained, which provides a theoretical basis for the design of OPCBT structure.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77821077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234872
P. Lomenzo, C. Richter, M. Materano, T. Mikolajick, U. Schroeder, T. Schenk, D. Spirito, S. Gorfman
Most pristine doped HfO2 polarization-field hysteresis loops show a pinched hysteresis and discussions are ongoing to explain this AFE-like switching behavior. Main causes discussed in literature are related to field induced phase changes, depolarization fields from non-polar phase regions in ferroelectric HfO2, and trapped charge. Structural and electrical characterization results are compared to distinguish between the different causes of AFE-like hysteresis behavior.
{"title":"AFE-like Hysteresis Loops from Doped HfO2: Field Induced Phase Changes and Depolarization Fields","authors":"P. Lomenzo, C. Richter, M. Materano, T. Mikolajick, U. Schroeder, T. Schenk, D. Spirito, S. Gorfman","doi":"10.1109/IFCS-ISAF41089.2020.9234872","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234872","url":null,"abstract":"Most pristine doped HfO2 polarization-field hysteresis loops show a pinched hysteresis and discussions are ongoing to explain this AFE-like switching behavior. Main causes discussed in literature are related to field induced phase changes, depolarization fields from non-polar phase regions in ferroelectric HfO2, and trapped charge. Structural and electrical characterization results are compared to distinguish between the different causes of AFE-like hysteresis behavior.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"29 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81207754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234865
Qi Huang, Shao-yun Wang, T. Ma, Ji Wang, Ju-lian Shen, Shih-Yung Pao, M. Chao
To develop novel quartz crystal resonators for better performance in special applications, the frequency-temperature relations of finite quartz crystal plates are refined to locate optimal orientations. Continuing with earlier efforts, we went into details of vibrations of a finite quartz crystal plate for better frequency-temperature relation of a tribally-rotated cut with turnover temperature at about -75°C. The calculation is performed by using the Mindlin plate theory with the incremental thermal field theory. The analysis showed that the frequency-temperature is better than the SC-cut in the vicinity of turnover temperature.
{"title":"A Novel Cut Quartz Crystal Plate with High Thermal Stability at a Lower Turnover Temperature","authors":"Qi Huang, Shao-yun Wang, T. Ma, Ji Wang, Ju-lian Shen, Shih-Yung Pao, M. Chao","doi":"10.1109/IFCS-ISAF41089.2020.9234865","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234865","url":null,"abstract":"To develop novel quartz crystal resonators for better performance in special applications, the frequency-temperature relations of finite quartz crystal plates are refined to locate optimal orientations. Continuing with earlier efforts, we went into details of vibrations of a finite quartz crystal plate for better frequency-temperature relation of a tribally-rotated cut with turnover temperature at about -75°C. The calculation is performed by using the Mindlin plate theory with the incremental thermal field theory. The analysis showed that the frequency-temperature is better than the SC-cut in the vicinity of turnover temperature.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"33 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75724447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-07-01DOI: 10.1109/IFCS-ISAF41089.2020.9234845
Ali Kourani, Yansong Yang, S. Gong
This paper presents an 8.6 GHz oscillator utilizing a third antisymmetric overtone ($A_{3}$) in a lithium niobate (LiNbO3) resonator for 5G communications. The oscillator consists of an acoustic resonator in a closed loop with cascaded RF tuned amplifiers (TAs) built on TSMC RF GP 65 nm CMOS. The TAs bandpass response, set by on-chip inductors, satisfies the Bark-hausen's oscillation conditions for $A_{3}$ while suppressing the fundamental and higher-order resonances. The oscillator achieves a measured phase noise of −56 and −113 dBc/Hz at 1 kHz and 100 kHz offsets from an 8.6 GHz output while consuming 10.2 mW of dc power. The oscillator also attains a figure-of-merit of 201.6 dB at 100 kHz offset, surpassing the state-of-the-art (SoA) EM and RF-MEMS oscillators.
{"title":"An X-Band Oscillator Utilizing Overtone Lithium Niobate MEMS Resonator and 65-nm CMOS","authors":"Ali Kourani, Yansong Yang, S. Gong","doi":"10.1109/IFCS-ISAF41089.2020.9234845","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234845","url":null,"abstract":"This paper presents an 8.6 GHz oscillator utilizing a third antisymmetric overtone ($A_{3}$) in a lithium niobate (LiNbO3) resonator for 5G communications. The oscillator consists of an acoustic resonator in a closed loop with cascaded RF tuned amplifiers (TAs) built on TSMC RF GP 65 nm CMOS. The TAs bandpass response, set by on-chip inductors, satisfies the Bark-hausen's oscillation conditions for $A_{3}$ while suppressing the fundamental and higher-order resonances. The oscillator achieves a measured phase noise of −56 and −113 dBc/Hz at 1 kHz and 100 kHz offsets from an 8.6 GHz output while consuming 10.2 mW of dc power. The oscillator also attains a figure-of-merit of 201.6 dB at 100 kHz offset, surpassing the state-of-the-art (SoA) EM and RF-MEMS oscillators.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"1 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82719305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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