Pub Date : 2018-05-21DOI: 10.1109/FCS.2018.8597483
A. Hugeat, Julien Bernard, G. Goavec-Mérou, P. Bourgeois, J. Friedt
Software Defined Radio (SDR) provides stability, flexibility and reconfigurability to radiofrequency signal processing. Applied to oscillator characterization in the context of ultrastable clocks, stringent filtering requirements are defined by spurious signal or noise rejection needs. Since real time radiofrequency processing must be performed in a Field Programmable Array to meet timing constraints, we investigate optimization strategies to design filters meeting rejection characteristics while limiting the hardware resources required and keeping timing constraints within the targeted measurement bandwidths.
{"title":"Filter Optimization for Real Time Digital Processing of Radiofrequency Signals: Application to Oscillator Metrology","authors":"A. Hugeat, Julien Bernard, G. Goavec-Mérou, P. Bourgeois, J. Friedt","doi":"10.1109/FCS.2018.8597483","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597483","url":null,"abstract":"Software Defined Radio (SDR) provides stability, flexibility and reconfigurability to radiofrequency signal processing. Applied to oscillator characterization in the context of ultrastable clocks, stringent filtering requirements are defined by spurious signal or noise rejection needs. Since real time radiofrequency processing must be performed in a Field Programmable Array to meet timing constraints, we investigate optimization strategies to design filters meeting rejection characteristics while limiting the hardware resources required and keeping timing constraints within the targeted measurement bandwidths.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124586294","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 : 2018-05-21DOI: 10.1109/FCS.2018.8597508
D. Chaudy, O. Llopis, B. Marcilhac, Y. Lemaître, O. D’Allivy Kelly, J. Hode
A cryogenic low phase noise amplifier and an high Q superconductor resonator at 1 GHz have been designed and realized. A good agreement between the measured and simulated data at 80 K for these two devices is observed. An all cryogenic oscillator has also been designed with the same devices on an alumina substrate. This oscillator is still under test.
{"title":"Low Phase Noise Cryogenic Amplifiers and Oscillators Based on Superconducting Resonators","authors":"D. Chaudy, O. Llopis, B. Marcilhac, Y. Lemaître, O. D’Allivy Kelly, J. Hode","doi":"10.1109/FCS.2018.8597508","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597508","url":null,"abstract":"A cryogenic low phase noise amplifier and an high Q superconductor resonator at 1 GHz have been designed and realized. A good agreement between the measured and simulated data at 80 K for these two devices is observed. An all cryogenic oscillator has also been designed with the same devices on an alumina substrate. This oscillator is still under test.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116960422","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 : 2018-05-21DOI: 10.1109/FCS.2018.8597504
Mingyo Park, A. Ansari
This work reports on the generation and frequency tuning mechanisms of resonant-based phononic frequency combs. The reported mechanical frequency combs are realized in an integrated standalone piezoelectric platform and are excited via non-degenerate parametric pumping. Two flexural resonance modes of a thin Aluminum Nitride (AlN)-on-silicon circular membrane are targeted due to their low onset of nonlinearity and excited simultaneously. When the resonator is pumped with a single tone at a frequency close to the sum of the two mechanical modes, phononic frequency combs are generated close to each mechanical mode, under certain and repeatable pump frequency and power conditions. The phononic combs consist of a set of equally-distanced phase-coherent spectral lines; we demonstrate such combs centered around 6 MHz, with a tunable spacing of around 55 kHz, corresponding to the $u_{11}$ resonance mode of the circular membrane. The center frequency and frequency spacing of the comb can be tuned by tuning the pump frequency and amplitude. We take advantage of the mode coupling between two high-$Q$ resonance modes in the same acoustic cavity, and demonstrate the smallest piezoelectric frequency comb, with a 30 $mu mathrm{m}$ diameter circular footprint, which requires a very low threshold power of only −4 dBm to excite a fine-tooth comb.
{"title":"Phononic Frequency Combs in Stand-Alone Piezoelectric Resonators","authors":"Mingyo Park, A. Ansari","doi":"10.1109/FCS.2018.8597504","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597504","url":null,"abstract":"This work reports on the generation and frequency tuning mechanisms of resonant-based phononic frequency combs. The reported mechanical frequency combs are realized in an integrated standalone piezoelectric platform and are excited via non-degenerate parametric pumping. Two flexural resonance modes of a thin Aluminum Nitride (AlN)-on-silicon circular membrane are targeted due to their low onset of nonlinearity and excited simultaneously. When the resonator is pumped with a single tone at a frequency close to the sum of the two mechanical modes, phononic frequency combs are generated close to each mechanical mode, under certain and repeatable pump frequency and power conditions. The phononic combs consist of a set of equally-distanced phase-coherent spectral lines; we demonstrate such combs centered around 6 MHz, with a tunable spacing of around 55 kHz, corresponding to the $u_{11}$ resonance mode of the circular membrane. The center frequency and frequency spacing of the comb can be tuned by tuning the pump frequency and amplitude. We take advantage of the mode coupling between two high-$Q$ resonance modes in the same acoustic cavity, and demonstrate the smallest piezoelectric frequency comb, with a 30 $mu mathrm{m}$ diameter circular footprint, which requires a very low threshold power of only −4 dBm to excite a fine-tooth comb.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128108988","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 : 2018-05-21DOI: 10.1109/FCS.2018.8597533
G. Adams, R. Siebrits, E. Bauermeister, L. Boyana, S. Malan, M. Welz, R. Vanwyk, R. Gamatham, J. Burger, F. Kapp, N. Mnyandu, S. Tshongweni, A. Otto, C. Vander Merwe
The integration of time transfer and control on a low cost single board computer (SBC) system is presented. The solution allows sub-microsecond level timestamping of logic control events and analogue to digital (ADC) measurements. The system is based on low cost, miniature commercially off the shelf (COTS) hardware. External time referencing can be supplied via network timing protocol (NTP), precision timing protocol (PTP) and/or a discrete pulse per second (PPS) signal. The operating distance is extendable to tens of kilometers using a simplified PPS transmission system over fibre, based on the Karoo array timing system (KATS) developed at South African Radio Astronomy Observatory (SARAO). Integration into the MeerKAT Radio Telescope's time and frequency modules shows CISPR 22 compliance and cross coupling effects for sensitive phase transfer systems are below the stringent EMC limits acceptable for radio astronomy. Real-time control is of great importance for industrial and scientific applications. After evaluating existing market-based solutions., these were found to be either cost prohibitive, non-EMC compliant or requiring proprietary network protocols. This implementation serves to offer a time synchronisation solution which is low in cost., has a small footprint and easily integrated into timing applications.
{"title":"High Performance Time Synchronisation for Industrial Logic Control Utilising a Low Cost Single Board Computer with EMC Compliance","authors":"G. Adams, R. Siebrits, E. Bauermeister, L. Boyana, S. Malan, M. Welz, R. Vanwyk, R. Gamatham, J. Burger, F. Kapp, N. Mnyandu, S. Tshongweni, A. Otto, C. Vander Merwe","doi":"10.1109/FCS.2018.8597533","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597533","url":null,"abstract":"The integration of time transfer and control on a low cost single board computer (SBC) system is presented. The solution allows sub-microsecond level timestamping of logic control events and analogue to digital (ADC) measurements. The system is based on low cost, miniature commercially off the shelf (COTS) hardware. External time referencing can be supplied via network timing protocol (NTP), precision timing protocol (PTP) and/or a discrete pulse per second (PPS) signal. The operating distance is extendable to tens of kilometers using a simplified PPS transmission system over fibre, based on the Karoo array timing system (KATS) developed at South African Radio Astronomy Observatory (SARAO). Integration into the MeerKAT Radio Telescope's time and frequency modules shows CISPR 22 compliance and cross coupling effects for sensitive phase transfer systems are below the stringent EMC limits acceptable for radio astronomy. Real-time control is of great importance for industrial and scientific applications. After evaluating existing market-based solutions., these were found to be either cost prohibitive, non-EMC compliant or requiring proprietary network protocols. This implementation serves to offer a time synchronisation solution which is low in cost., has a small footprint and easily integrated into timing applications.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131273938","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 : 2018-05-21DOI: 10.1109/FCS.2018.8597570
B. Marechal, A. Hugeat, G. Goavec-Mérou, G. Cabodevila, J. Millo, C. Lacroûte, P. Bourgeois
We report on the fully digital implementation of various locking schemes within the frame of microwave photonics systems such as Pound-Drever-Hall (PDH) for ultra-stable lasers based on Fabry-Perot cavities, heterodyne lockin amplifiers for fiber links, laser stabilization of optical clocks. We demonstrate similar performances over their analog counterparts, with a net gain on flexibility and reconfigurability.
{"title":"Digital Implementation of Various Locking Schemes of Ultrastable Photonics Systems","authors":"B. Marechal, A. Hugeat, G. Goavec-Mérou, G. Cabodevila, J. Millo, C. Lacroûte, P. Bourgeois","doi":"10.1109/FCS.2018.8597570","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597570","url":null,"abstract":"We report on the fully digital implementation of various locking schemes within the frame of microwave photonics systems such as Pound-Drever-Hall (PDH) for ultra-stable lasers based on Fabry-Perot cavities, heterodyne lockin amplifiers for fiber links, laser stabilization of optical clocks. We demonstrate similar performances over their analog counterparts, with a net gain on flexibility and reconfigurability.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"56 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129481117","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 : 2018-05-01DOI: 10.1109/FCS.2018.8597560
J. Mufioz, F. Torres, A. Uranga, V. Tsanov, N. Bamiol, E. Marigó, M. Soundara-Pandian
In this paper, an AlN piezoelectric micromachined ultrasonic transducer (PMUT) compatible with pre-processed CMOS substrate is presented. Compared to traditional PMUTs, given that this one is on top of a CMOS pre-processed wafer, it will provide benefits in terms of fabrication without the complexity to use wafer bonding. These benefits will be clearly reflected i.e. in arrays, since the smaller pitch achievable between PMUTs, with no added bond-pads needed, will enable a higher fill factor with the advantages of reduced cost, area and power consumption. Pulse echo measurements of acoustic pressure in liquid provide competitive values compared with the state-of-the-art AlN PMUTs.
{"title":"Monolithical AlN PMUT on Pre-Processed CMOS Substrate","authors":"J. Mufioz, F. Torres, A. Uranga, V. Tsanov, N. Bamiol, E. Marigó, M. Soundara-Pandian","doi":"10.1109/FCS.2018.8597560","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597560","url":null,"abstract":"In this paper, an AlN piezoelectric micromachined ultrasonic transducer (PMUT) compatible with pre-processed CMOS substrate is presented. Compared to traditional PMUTs, given that this one is on top of a CMOS pre-processed wafer, it will provide benefits in terms of fabrication without the complexity to use wafer bonding. These benefits will be clearly reflected i.e. in arrays, since the smaller pitch achievable between PMUTs, with no added bond-pads needed, will enable a higher fill factor with the advantages of reduced cost, area and power consumption. Pulse echo measurements of acoustic pressure in liquid provide competitive values compared with the state-of-the-art AlN PMUTs.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117164518","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 : 2018-05-01DOI: 10.1109/FCS.2018.8597538
Gurpreet Kaur Gulati, Sang K. Chung, T. Le, J. Prestage, L. Yi, R. Tjoelker, Nan Nyu, C. Holland
Trapped mercury ion frequency standards are pumped with discharge lamps, offering a unique approach with simplicity and robustness. This paper describes the development of a miniature mercury ion trap package intended for a low-power atomic clock based on the 40.5-GHz ground state hyperfine transition of trapped 199Hg.
{"title":"Miniatured and Low Power Mercury Microwave Ion Clock","authors":"Gurpreet Kaur Gulati, Sang K. Chung, T. Le, J. Prestage, L. Yi, R. Tjoelker, Nan Nyu, C. Holland","doi":"10.1109/FCS.2018.8597538","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597538","url":null,"abstract":"Trapped mercury ion frequency standards are pumped with discharge lamps, offering a unique approach with simplicity and robustness. This paper describes the development of a miniature mercury ion trap package intended for a low-power atomic clock based on the 40.5-GHz ground state hyperfine transition of trapped 199Hg.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"168-169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121283537","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 : 2018-05-01DOI: 10.1109/FCS.2018.8597469
Charis Basetas, Nikos Temenos, P. Sotiriadis
A hardware implementation of Multi-Step Look-Ahead Sigma-Delta Modulators (MSLA SDMs) in IC technology is presented. MSLA SDMs offer superior performance than conventional single-bit SDMs for a multitude of applications relying on single-bit signal representation. However, traditional look-ahead SDMs have very high algorithmic complexity. MSLA SDMs overcome this problem by transforming the minimization problem associated with traditional look-ahead SDMs. A proof-of-concept IC implementation of a specific MSLA SDM is discussed and compared to a conventional single-bit SDM in terms of performance and hardware complexity. It is demonstrated that MSLA SDMs are a viable alternative to conventional single-bit SDMs when better performance with moderate additional hardware complexity are required.
{"title":"Implementation of Multi-Step Look-Ahead Sigma-Delta Modulators Using IC Technology","authors":"Charis Basetas, Nikos Temenos, P. Sotiriadis","doi":"10.1109/FCS.2018.8597469","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597469","url":null,"abstract":"A hardware implementation of Multi-Step Look-Ahead Sigma-Delta Modulators (MSLA SDMs) in IC technology is presented. MSLA SDMs offer superior performance than conventional single-bit SDMs for a multitude of applications relying on single-bit signal representation. However, traditional look-ahead SDMs have very high algorithmic complexity. MSLA SDMs overcome this problem by transforming the minimization problem associated with traditional look-ahead SDMs. A proof-of-concept IC implementation of a specific MSLA SDM is discussed and compared to a conventional single-bit SDM in terms of performance and hardware complexity. It is demonstrated that MSLA SDMs are a viable alternative to conventional single-bit SDMs when better performance with moderate additional hardware complexity are required.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121339838","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 : 2018-05-01DOI: 10.1109/FCS.2018.8597472
Hakhamanesh Mansoorzare, Sina Moradian, S. Shahraini, R. Abdolvand, J. Gonzales
In this work we demonstrate that it is possible to push the most dominant sources of extrinsic loss (i.e. anchor and air loss) in high-frequency thin-film piezoelectric-on-substrate (TPoS) MEMS resonator to levels that they no longer limit the overall $Q$. This is achieved through altering the substrate regions around the resonators, etching notch and reflector structures, so that the resulted acoustic cavity is virtually not leaking acoustic energy once the resonator is operated in vacuum. We experimentally prove our technique by presenting an 1100% improvement in $Q$ for a TPoS resonator operating at ~82 MHz and achieving an $ftimes Q$ of $2.6times 10^{12}$.
{"title":"Achieving the Intrinsic Limit of Quality Factor in VHF Extensional-Mode Block Resonators","authors":"Hakhamanesh Mansoorzare, Sina Moradian, S. Shahraini, R. Abdolvand, J. Gonzales","doi":"10.1109/FCS.2018.8597472","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597472","url":null,"abstract":"In this work we demonstrate that it is possible to push the most dominant sources of extrinsic loss (i.e. anchor and air loss) in high-frequency thin-film piezoelectric-on-substrate (TPoS) MEMS resonator to levels that they no longer limit the overall $Q$. This is achieved through altering the substrate regions around the resonators, etching notch and reflector structures, so that the resulted acoustic cavity is virtually not leaking acoustic energy once the resonator is operated in vacuum. We experimentally prove our technique by presenting an 1100% improvement in $Q$ for a TPoS resonator operating at ~82 MHz and achieving an $ftimes Q$ of $2.6times 10^{12}$.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125964603","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}
This paper presents a novel multi-electrode Micro-electro-mechanical system (MEMS) disk resonator vibrating in the whispering gallery modes (WGM). Multi-mode resonance can simultaneously be driven with one pair of electrodes. The performance for each vibration mode strongly depends on the span angles of electrodes, and an optimized angle of 34° is obtained for a resonator of $37 mu mathrm{m}$ in radius. With the multi-electrodes configuration, multiple frequencies output of 56-176 MHz with high quality factor $(Q)$ around 10000 are attained for a $37 mumathrm{m}$-radius disk resonator in atmosphere, which has a potential application in tunable multi-frequency RF oscillators and filters.
本文提出了一种新型的多电极微机电系统(MEMS)圆盘谐振器，其振动方式为窃窃廊模式(WGM)。一对电极可以同时驱动多模共振。每种振动模式的性能很大程度上取决于电极的跨度角，对于半径为$37 mu mathm {m}$的谐振器，得到的最佳角度为34°。采用多电极结构，在大气环境中，半径为37 mu mathm {m}$的圆盘谐振器可获得56 ~ 176 MHz的多频率输出，高品质因数$(Q)$约10000，在可调谐多频射频振荡器和滤波器中具有潜在的应用前景。
{"title":"A Novel Multiple-Frequency RF-MEMS Resonator with Optimized Electrode Design","authors":"X. Kan, Zeji Chen, Q. Yuan, Fengxiang Wang, Jinling Yang, Fuhua Yang, X. Kan, Zeii Chen, Ouan Yuan, Fenzxianz Wanz, Jinling Yang, Fuhua Yang, X. Kan, Zeji Chen, Fengxiang Wang, Jinling Yang","doi":"10.1109/FCS.2018.8597524","DOIUrl":"https://doi.org/10.1109/FCS.2018.8597524","url":null,"abstract":"This paper presents a novel multi-electrode Micro-electro-mechanical system (MEMS) disk resonator vibrating in the whispering gallery modes (WGM). Multi-mode resonance can simultaneously be driven with one pair of electrodes. The performance for each vibration mode strongly depends on the span angles of electrodes, and an optimized angle of 34° is obtained for a resonator of $37 mu mathrm{m}$ in radius. With the multi-electrodes configuration, multiple frequencies output of 56-176 MHz with high quality factor $(Q)$ around 10000 are attained for a $37 mumathrm{m}$-radius disk resonator in atmosphere, which has a potential application in tunable multi-frequency RF oscillators and filters.","PeriodicalId":180164,"journal":{"name":"2018 IEEE International Frequency Control Symposium (IFCS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123578752","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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