Results 211 to 220 of about 30,488 (265)
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Apodization technique for spurious mode suppression in AlN contour-mode resonators
Sensors and Actuators A: Physical, 2014Abstract This paper reports on the application of apodization techniques to 900 MHz–1 GHz MEMS AlN Contour-Mode Resonators (CMRs [1] , [2] , [3] , [4] , [5] , [6] ) to efficiently suppress spurious modes in close proximity of the main mechanical resonance.
Marco Giovannini +3 more
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Suppression of spurious lateral modes in thickness-excited FBAR resonators
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005Thin film bulk acoustic wave resonators (FBAR) utilize thickness-excited modes in which the resonant frequency is determined by the thickness of the structure and the wave velocity of the mode used. Unfortunately, other resonant modes also may be excited in the device.
Daniel, Rosén +2 more
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Harnessing Mode Conversion for Spurious Mode Suppression in AlN Laterally Vibrating Resonators
Journal of Microelectromechanical Systems, 2016This paper reports on a spurious mode suppression technique for S0 mode aluminum nitride (AlN) laterally vibrating resonators. The technique utilizes a notch in the resonator body to convert spurious asymmetrical (A0) modes into the intended S0 mode vibration.
Anming Gao, Songbin Gong
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Wide-Stopband SIW Filters Using Modified Multi-Spurious Modes Suppression Technique
IEEE Transactions on Circuits and Systems II: Express Briefs, 2020A modified multi-spurious modes suppression technique is proposed to realize wide-stopband substrate-integrated waveguide (SIW) bandpass filters (BPFs), which is to set the external ports and internal coupling windows to the positions of weakest electric fields of specific spurious modes.
Hao-Wei Xie +3 more
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Spurious Modes in Laterally Excited Bulk Acoustic Resonators (XBARs): Analysis and Suppression
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2023Laterally excited bulk acoustic resonators (XBARs) are plate mode resonators in which one of the higher-order plate modes transforms into the bulk acoustic wave (BAW) due to the very thin plates used in these devices. The propagation of the primary mode is usually accompanied by numerous spurious modes, which deteriorate resonator performances and ...
Natalya F Naumenko
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AlN/Al0.8Sc0.2N film S mode lamb wave resonator with spurious mode suppression
Journal of Applied Physics, 2022High-performance Lamb wave devices have a vast application prospect in modern wireless communication systems. This paper proposes a method of spurious mode suppression by reducing the overlap length of electrodes according to modal shapes. The AlN/Al0.8Sc0.2N composite film is used to achieve a trade-off between electromechanical coupling coefficient ...
Qinwen Xu +6 more
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Spurious-mode suppression in optoelectronic oscillators
2010 IEEE International Frequency Control Symposium, 2010Optoelectronic oscillators (OEOs) are promising low phase noise radio frequency sources. However, the long fiber loops required for a high Oscillator Q also lead to spurious modes (spurs) spaced too narrowly to be filtered by standard electronic devices.
Olukayode Okusaga +6 more
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Spurious Mode Suppression in Coupled Resonator Filters
IEEE MTT-S International Microwave Symposium Digest, 2005., 2005The Coupled Resonator Filter (CRF) is a new type of Bulk-Acoustic-Wave (BAW) device in which two piezoresonators are stacked on top of each other in a way that a certain degree of acoustic interaction occurs. For a proper frequency response, a method for suppression of spurious resonances is of utmost importance.
G. G. Fattinger +4 more
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Balanced bandpass filter with spurious mode suppression
Microwave and Optical Technology Letters, 2017ABSTRACTThis article presents a new and simple design approach for the balanced bandpass filter (BPF) with spurious mode suppression using half‐wavelength resonators. The second harmonic of the resonator, acting as the lowest‐frequency common‐mode (CM) noise, is suppressed by using a new differential feeding scheme. Furthermore, an electrically coupled
Yun‐Li Li +4 more
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