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-ISAF41089.2020.9234811
Shuji Tanaka, M. Kadota
Ultrathin lithium niobite (LN) and lithium tantalate (LT) have opened a new era of acoustic wave devices. The performances such as impedance ratio, bandwidth and temperature stability of new types of devices are incredibly high compared with those of conventional ones. The R&D is showing a kind of boom in both industry and academia. In this paper, plate wave devices and HAL (Hetero Acoustic Layer) SAW (surface acoustic wave) devices using ultrathin LN or LT developed by the authors' group are described.
{"title":"IDT-based Acoustic Wave Devices Using Ultrathin Lithium Niobate and Lithium Tantalate","authors":"Shuji Tanaka, M. Kadota","doi":"10.1109/IFCS-ISAF41089.2020.9234811","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234811","url":null,"abstract":"Ultrathin lithium niobite (LN) and lithium tantalate (LT) have opened a new era of acoustic wave devices. The performances such as impedance ratio, bandwidth and temperature stability of new types of devices are incredibly high compared with those of conventional ones. The R&D is showing a kind of boom in both industry and academia. In this paper, plate wave devices and HAL (Hetero Acoustic Layer) SAW (surface acoustic wave) devices using ultrathin LN or LT developed by the authors' group are described.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"20 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":"84245858","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-ISAF41089.2020.9234857
W. Qin, Yulong Ge, Wei Wang, Xuhai Yang
The research on the mitigation on the jump of the day boundary is a perpetual topic for the time-filed scholars. Compared to GPS, the results operated by multiple Global Navigation Satellite Systems (GNSSs) may alleviate the jump not remove the jump. Focused on this problem, the new algorithm is proposed as here: three-stated clock model is added to the observation, the characteristic of clock is fully recovered. The ambiguity should be initialized in the first epoch of each day for constraining jump fiercely to the ambiguity parameter so as to get a clean receiver clock parameter. In order to validate whether the approach works, six kinds of combinations of three stations were analyzed. Compared to traditional solutions, the jump of three stations is removed completely. With respect to the frequency stability, the new model has an absolute superiority than that of traditional solution, particularly in the short-term, the maximal improvement is up to 80%.
{"title":"An Approach for Mitigating PPP Day Boundary with Clock Stochastic Model","authors":"W. Qin, Yulong Ge, Wei Wang, Xuhai Yang","doi":"10.1109/IFCS-ISAF41089.2020.9234857","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234857","url":null,"abstract":"The research on the mitigation on the jump of the day boundary is a perpetual topic for the time-filed scholars. Compared to GPS, the results operated by multiple Global Navigation Satellite Systems (GNSSs) may alleviate the jump not remove the jump. Focused on this problem, the new algorithm is proposed as here: three-stated clock model is added to the observation, the characteristic of clock is fully recovered. The ambiguity should be initialized in the first epoch of each day for constraining jump fiercely to the ambiguity parameter so as to get a clean receiver clock parameter. In order to validate whether the approach works, six kinds of combinations of three stations were analyzed. Compared to traditional solutions, the jump of three stations is removed completely. With respect to the frequency stability, the new model has an absolute superiority than that of traditional solution, particularly in the short-term, the maximal improvement is up to 80%.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"11 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77066925","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-ISAF41089.2020.9234924
Dandan Liu, Jun Ruan, Sichen Fan, Hui Zhang, Yong Guan, Xinliang Wang, Junru Shi, Yan Yang, Yang Bai, Shougang Zhang
Frequency measurement and comparison with TAI of NTSC-F1 is presented in the paper. Automatical evaluation system of cesium fountain clock is designed to correct the systematic frequency biases in real time. The estimation of the average frequency between H-maser donated as 296 in Circular T report and NTSC-F1 is obtained over the frequency data after correcting all the shifts. Then the frequency offset between NTSC-F1 and TAI is given with the uncertainty of $2.9times 10^{-15}$ including the uncertainty between UTC and UTC(NTSC).
{"title":"Comparison with TAI of NTSC-F1","authors":"Dandan Liu, Jun Ruan, Sichen Fan, Hui Zhang, Yong Guan, Xinliang Wang, Junru Shi, Yan Yang, Yang Bai, Shougang Zhang","doi":"10.1109/IFCS-ISAF41089.2020.9234924","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234924","url":null,"abstract":"Frequency measurement and comparison with TAI of NTSC-F1 is presented in the paper. Automatical evaluation system of cesium fountain clock is designed to correct the systematic frequency biases in real time. The estimation of the average frequency between H-maser donated as 296 in Circular T report and NTSC-F1 is obtained over the frequency data after correcting all the shifts. Then the frequency offset between NTSC-F1 and TAI is given with the uncertainty of $2.9times 10^{-15}$ including the uncertainty between UTC and UTC(NTSC).","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"49 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":"80715940","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-ISAF41089.2020.9234810
M. Šimėnas, S. Balčiu̅nas, Š. Svirskas, M. Kinka, V. Samulionis, R. Grigalaitis, J. Banys, A. Gągor, M. Ma̧czka, A. Garbaras, A. Sieradzki
Here, we present a multitechnique experimental study of structural phase transitions and dipolar dynamics in the novel mixed methylammonium (MA)/dimethylammonium (DMA) MA1-xDMAxPbBr3 hybrid perovskites. The obtained results demonstrate a suppression of the structural phase transitions and stabilization of the cubic phase even for a small amount of DMA cations. For high DMA concentration, we observe a disappearance of the structural phase transitions and emergence of a glassy phase of electric dipoles.
{"title":"Peculiarities of Dipolar Ordering in Mixed Cation Halide Perovskites","authors":"M. Šimėnas, S. Balčiu̅nas, Š. Svirskas, M. Kinka, V. Samulionis, R. Grigalaitis, J. Banys, A. Gągor, M. Ma̧czka, A. Garbaras, A. Sieradzki","doi":"10.1109/IFCS-ISAF41089.2020.9234810","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234810","url":null,"abstract":"Here, we present a multitechnique experimental study of structural phase transitions and dipolar dynamics in the novel mixed methylammonium (MA)/dimethylammonium (DMA) MA1-xDMAxPbBr3 hybrid perovskites. The obtained results demonstrate a suppression of the structural phase transitions and stabilization of the cubic phase even for a small amount of DMA cations. For high DMA concentration, we observe a disappearance of the structural phase transitions and emergence of a glassy phase of electric dipoles.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"40 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":"81378952","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-ISAF41089.2020.9234933
Hakhamanesh Mansoorzare, R. Abdolvand
Acoustoelectric delay lines (AEDL) fabricated on a composite lithium niobate-silicon (LN-Si) platform could enable acoustoelectric (AE) nonreciprocity and gain provided that the material properties of the LN-Si heterostructure are properly selected. Among such properties are the carrier density and mobility in the Si substrate. However, the bulk Si properties are subject to substantial perturbation at the LN-Si interface as a result of interfacial trapped charges at dislocations and dangling bond sites. The metal-insulator-semiconductor (MIS) capacitor inherently formed in such heterostructures, however, could allow for some level of control over the Si carrier distribution at the LN film interface. In this work, we demonstrate that the AE gain achieved by the momentum transfer from the carriers drifting in Si and the subsequent nonreciprocity could be fine-tuned and the efficiency of the device could be improved by utilizing the MIS capacitor. The device efficiency is found to be enhanced once the majority electron carriers in n-type Si are slightly depleted at the LN-Si interface resulting in ∼1.5 times improvement in the AE gain at a lower bias current, increasing the efficiency by ∼60%.
{"title":"Trapped Charge Effect on Composite Lithium Niobate-Silicon Acoustoelectric Delay Lines","authors":"Hakhamanesh Mansoorzare, R. Abdolvand","doi":"10.1109/IFCS-ISAF41089.2020.9234933","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234933","url":null,"abstract":"Acoustoelectric delay lines (AEDL) fabricated on a composite lithium niobate-silicon (LN-Si) platform could enable acoustoelectric (AE) nonreciprocity and gain provided that the material properties of the LN-Si heterostructure are properly selected. Among such properties are the carrier density and mobility in the Si substrate. However, the bulk Si properties are subject to substantial perturbation at the LN-Si interface as a result of interfacial trapped charges at dislocations and dangling bond sites. The metal-insulator-semiconductor (MIS) capacitor inherently formed in such heterostructures, however, could allow for some level of control over the Si carrier distribution at the LN film interface. In this work, we demonstrate that the AE gain achieved by the momentum transfer from the carriers drifting in Si and the subsequent nonreciprocity could be fine-tuned and the efficiency of the device could be improved by utilizing the MIS capacitor. The device efficiency is found to be enhanced once the majority electron carriers in n-type Si are slightly depleted at the LN-Si interface resulting in ∼1.5 times improvement in the AE gain at a lower bias current, increasing the efficiency by ∼60%.","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 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":"88117581","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-ISAF41089.2020.9234815
J. Vojtěch, O. Havlis, Sarbojeet Bhowmick, Martin Šlapák, P. Munster, T. Horváth, R. Velc, J. Kundrát, L. Altmannova, Rudolf Vohnout, P. Škoda, V. Smotlacha
In this paper, we present results of experimental two way transmission of precise time over 400 km fully reciprocal bi-directionally amplified optical path outside the telecommunication C band. Used was the White Rabbit system, which combines synchronous Ethernet and Precise Time Protocol (IEEE-1588) however previously developed Time Transfer Adapters should provide slightly better performance.
{"title":"White Rabbit Single Fibre Bidirectional Transmission of Precise Time Using Unconventional Wavelengths","authors":"J. Vojtěch, O. Havlis, Sarbojeet Bhowmick, Martin Šlapák, P. Munster, T. Horváth, R. Velc, J. Kundrát, L. Altmannova, Rudolf Vohnout, P. Škoda, V. Smotlacha","doi":"10.1109/IFCS-ISAF41089.2020.9234815","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234815","url":null,"abstract":"In this paper, we present results of experimental two way transmission of precise time over 400 km fully reciprocal bi-directionally amplified optical path outside the telecommunication C band. Used was the White Rabbit system, which combines synchronous Ethernet and Precise Time Protocol (IEEE-1588) however previously developed Time Transfer Adapters should provide slightly better performance.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"51 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":"89751338","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-ISAF41089.2020.9234913
Jesus Yanez, E. Ledesma, A. Uranga, N. Barniol
This study discloses how the distribution of the effective electromechanical coupling in the modes of our HBAR ultrasonic sensors at GHz range is significantly affected by the configuration of layers and materials used for its manufacture. Using analytical models from the literature supported by FEM simulations, frequency bands with greater coupling were found due to the effect of extra materials on the stack. S11 measurement of the devices proved this effect. The foregoing is a glance of how to increase the effective coupling in HBAR modes far distant from the resonance frequency of the piezoelectric element while preserving the high bandwidth and low input impedance inherent to the thin piezoelectric layer, in contrast to the relatively low coupling that can be expected with a similar HBAR of negligible electrodes at such frequencies.
{"title":"Improved Electromechanical Transduction for PiezoMUMPS HBAR Impedance Sensors","authors":"Jesus Yanez, E. Ledesma, A. Uranga, N. Barniol","doi":"10.1109/IFCS-ISAF41089.2020.9234913","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234913","url":null,"abstract":"This study discloses how the distribution of the effective electromechanical coupling in the modes of our HBAR ultrasonic sensors at GHz range is significantly affected by the configuration of layers and materials used for its manufacture. Using analytical models from the literature supported by FEM simulations, frequency bands with greater coupling were found due to the effect of extra materials on the stack. S11 measurement of the devices proved this effect. The foregoing is a glance of how to increase the effective coupling in HBAR modes far distant from the resonance frequency of the piezoelectric element while preserving the high bandwidth and low input impedance inherent to the thin piezoelectric layer, in contrast to the relatively low coupling that can be expected with a similar HBAR of negligible electrodes at such frequencies.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75766544","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-ISAF41089.2020.9234821
Yao Zhu, Nan Wang, Chen Liu, Ying Zhang
This work reviews various methods which improve the effective coupling coefficient (${k^{2}}_{eff}$) of non-bulk acoustic wave (BAW) aluminum nitride (AlN) based RF MEMS resonators, mainly focusing on the innovative structural design of the resonators. ${k^{2}}_{eff}$ is the key parameter for a resonator in communication applications because it measures the achievable fractional bandwidth of the filter constructed. The resonator's configuration, dimension, material stack and the fabrication process will all have impact on its ${k^{2}}_{eff}$. In this paper, the authors will review the efforts in improving the ${k^{2}}_{eff}$ of piezoelectric MEMS resonators from research community in the past 15 years, mainly from the following three approaches: coupling lateral wave with vertical wave, exciting two-dimensional (2-D) lateral wave, as well as coupling 2-D lateral wave with vertical wave. The material will be limited to AlN family, which is proven to be manageable for manufacturing. The authors will also try to make recommendations to the effectiveness of various approaches and the path forward.
{"title":"A Review of the Approaches to Improve The Effective Coupling Coefficient of AlN based RF MEMS Resonators","authors":"Yao Zhu, Nan Wang, Chen Liu, Ying Zhang","doi":"10.1109/IFCS-ISAF41089.2020.9234821","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234821","url":null,"abstract":"This work reviews various methods which improve the effective coupling coefficient (${k^{2}}_{eff}$) of non-bulk acoustic wave (BAW) aluminum nitride (AlN) based RF MEMS resonators, mainly focusing on the innovative structural design of the resonators. ${k^{2}}_{eff}$ is the key parameter for a resonator in communication applications because it measures the achievable fractional bandwidth of the filter constructed. The resonator's configuration, dimension, material stack and the fabrication process will all have impact on its ${k^{2}}_{eff}$. In this paper, the authors will review the efforts in improving the ${k^{2}}_{eff}$ of piezoelectric MEMS resonators from research community in the past 15 years, mainly from the following three approaches: coupling lateral wave with vertical wave, exciting two-dimensional (2-D) lateral wave, as well as coupling 2-D lateral wave with vertical wave. The material will be limited to AlN family, which is proven to be manageable for manufacturing. The authors will also try to make recommendations to the effectiveness of various approaches and the path forward.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"122 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":"80982255","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-ISAF41089.2020.9234854
Markus Gellesch, Richard Barron, Jonathan M. Jones, Alok Singh, Qiushuo Sun, K. Bongs, Y. Singh
We present our work on a compact and flexible Optical Lattice Clock Testbed System. This system helps realizing a compact and transportable strontium-based optical atomic clock demonstrator built from industry-developed subsystems – a deliverable of the iqClock project. The demonstrator will be integrated at the University of Birmingham. In order to facilitate the system integration of the demonstrator, we use the testbed system to assess the performance of the industry-built components and subsystems. The testbed is completed in its first phase, capable of realizing ultra-cold atoms. In a subsequent phase, we will transform the testbed system into a strontium-based frequency standard.
{"title":"An Optical Lattice Clock Testbed System for the iqClock Project Demonstrator","authors":"Markus Gellesch, Richard Barron, Jonathan M. Jones, Alok Singh, Qiushuo Sun, K. Bongs, Y. Singh","doi":"10.1109/IFCS-ISAF41089.2020.9234854","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234854","url":null,"abstract":"We present our work on a compact and flexible Optical Lattice Clock Testbed System. This system helps realizing a compact and transportable strontium-based optical atomic clock demonstrator built from industry-developed subsystems – a deliverable of the iqClock project. The demonstrator will be integrated at the University of Birmingham. In order to facilitate the system integration of the demonstrator, we use the testbed system to assess the performance of the industry-built components and subsystems. The testbed is completed in its first phase, capable of realizing ultra-cold atoms. In a subsequent phase, we will transform the testbed system into a strontium-based frequency standard.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"53 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":"83686693","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-ISAF41089.2020.9234886
Hsin-Tung Jen, Gayathri Pillai, Shengyou Liu, Sheng-Shian Li
An array of short mechanical couplers scheme to realize a support transducer enabled Wine-glass resonator/oscillator exhibiting a quality factor ($Q$) of 17,000 and an oscillator Phase Noise (PN) meeting the GSM spec. at 1 kHz and 1 MHz offsets has been demonstrated in this work. A 20.3-MHz Wine-glass resonator fabricated using the MEMSCAP platform is used to implement the oscillator. The meticulous structural and material engineering aspect of the resonator improves the quality factor of the design from 9,500 to 17,000, making the resonator an ideal candidate for high-end oscillator applications. An attenuator and phase control methodology along with commercially available amplifiers has been used to realize a low phase noise oscillator with a PN of −134.1 dBc/Hz and −152.3 dBc/Hz at 1 kHz and 1 MHz offsets respectively while divided down to GSM's 13 MHz.
{"title":"Low Phase Noise Wine-Glass Oscillator Realized Using Enhanced Support Transducer Design","authors":"Hsin-Tung Jen, Gayathri Pillai, Shengyou Liu, Sheng-Shian Li","doi":"10.1109/IFCS-ISAF41089.2020.9234886","DOIUrl":"https://doi.org/10.1109/IFCS-ISAF41089.2020.9234886","url":null,"abstract":"An array of short mechanical couplers scheme to realize a support transducer enabled Wine-glass resonator/oscillator exhibiting a quality factor ($Q$) of 17,000 and an oscillator Phase Noise (PN) meeting the GSM spec. at 1 kHz and 1 MHz offsets has been demonstrated in this work. A 20.3-MHz Wine-glass resonator fabricated using the MEMSCAP platform is used to implement the oscillator. The meticulous structural and material engineering aspect of the resonator improves the quality factor of the design from 9,500 to 17,000, making the resonator an ideal candidate for high-end oscillator applications. An attenuator and phase control methodology along with commercially available amplifiers has been used to realize a low phase noise oscillator with a PN of −134.1 dBc/Hz and −152.3 dBc/Hz at 1 kHz and 1 MHz offsets respectively while divided down to GSM's 13 MHz.","PeriodicalId":6872,"journal":{"name":"2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)","volume":"49 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":"84445367","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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