Tunable RF band-pass filters based on NEMS magnetoelectric resonators

Lin, Hao; Nan, Tianxiang; Qian, Zhenyun; Gao, Yuan; Huang, Yu; Xin-jun, Wang; Guo, Rongdi; Belkessam, Amine M.; Shi, Wei; Rinaldi, Matteo

doi:10.1109/mwsym.2016.7540335

Cited by 13 publications

(17 citation statements)

References 20 publications

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“…For || , two large peaks occur at roughly ±H C reaching a maximum df 0 /dH of 40 Hz/mT. This corresponds to 0.03 %f 0 /mT, which is comparable or slightly higher than values observed for other proposed sensors where magnetostriction dominates 15,29 but is lower than that previously observed df 0 /dH values for cantilever beams utilizing the ΔE effect 3,11 . However, while df 0 /dH is low at smaller magnetic fields for , the value grows linearly with increasing field and while the value of field sensitivity may decrease as the material approaches saturation, it is not expected to saturate until well over 1…”

Section: Figure 1 Shows the Measured Resonator Amplitude As A Functiosupporting

confidence: 42%

Magnetoelastic Effects in Doubly Clamped Electroplated Co77Fe23 Microbeam Resonators

et al. 2019

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Magnetostrictive Co 77 Fe 23 films were fully suspended to produce free-standing, clampedclamped, micro-beam resonators. A negative or positive shift in the resonant frequency was observed for magnetic fields applied parallel or perpendicular to the length of the beam, respectively, confirming the magnetoelastic nature of the shift. Notably, the resonance shifted linearly with higher bias fields oriented perpendicular to the beams' length. Domain imaging elucidated the distinction in the reversal processes along the easy and hard axes. Together, these results suggest that through modification of the magnetic anisotropy, the frequency shift and angular dependence can be tuned, producing highly magnetic field sensitive resonators.

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Section: Figure 1 Shows the Measured Resonator Amplitude As A Functiosupporting

confidence: 42%

Magnetoelastic Effects in Doubly Clamped Electroplated Co77Fe23 Microbeam Resonators

et al. 2019

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“…[15][16][17][18][19][20][21][22][23][24][25] have been developed according to the direct ME coupling, while converse ME coupling has been utilized to design voltage tunable devices including ME random access memory (MERAM), inductors, etc. [26][27][28][29][30][31][32][33][34][35][36]. Besides, another promising topic that has received the significant research interests during recent years is mechanically actuated ME antennas, which exploit both direct and converse ME couplings [37][38][39][40][41][42][43][44][45][46].…”

Section: Multiferroic Materialsmentioning

confidence: 99%

“…Therefore, we focus on the recent progress on thin-film magnetostrictive materials in this article. Several types of integrated multiferroic devices based on thin-film ME heterostructures including ME sensors [18,63,[67][68][69][70][71], inductors [35], filters [32] and antennas [43,72,73] are presented in this section. Based on the direct ME effect, a giant ME coefficient (α ME ) as high as 5kV/cm Oe was obtained by the direct deposition of FeCoSiB on Si substrate with a Si/SiO 2 /Pt/ AlN/FeCoSiB layer stack [71].…”

Section: Magnetoelectric Applicationsmentioning

confidence: 99%

A Review of Thin-Film Magnetoelastic Materials for Magnetoelectric Applications

Liang

Dong

Chen

et al. 2020

Sensors

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Since the revival of multiferroic laminates with giant magnetoelectric (ME) coefficients, a variety of multifunctional ME devices, such as sensor, inductor, filter, antenna etc. have been developed. Magnetoelastic materials, which couple the magnetization and strain together, have recently attracted ever-increasing attention due to their key roles in ME applications. This review starts with a brief introduction to the early research efforts in the field of multiferroic materials and moves to the recent work on magnetoelectric coupling and their applications based on both bulk and thin-film materials. This is followed by sections summarizing historical works and solving the challenges specific to the fabrication and characterization of magnetoelastic materials with large magnetostriction constants. After presenting the magnetostrictive thin films and their static and dynamic properties, we review micro-electromechanical systems (MEMS) and bulk devices utilizing ME effect. Finally, some open questions and future application directions where the community could head for magnetoelastic materials will be discussed.

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“…Acoustic-wave resonator-based filters with reconfigurable transfer function have been reported in [14]- [23]. They are primarily based on RF-switched parallelized-filter/resonator architectures and are typically limited to two discrete states as, for example, in [16] and [17], in which BPFs with two BW (upper passband tuning) and two center-frequency states are, respectively, described.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, they are not suitable for continuous-type reconfiguration. Analog tunable acoustic-wave resonator-based BPFs-mostly of ladder type-in which the resonant or the antiresonant frequency of its constituent acoustic-wave resonator is shifted by means of series-or parallel-cascaded semiconductor varactors were presented in [20]- [23]. However, their transfer function is limited by excessive in-band IL (6-15 dB that corresponds to effective Qs around 40-200 mainly dominated by the loss of the varactors) and reduced filtering selectivity.…”

Section: Introductionmentioning

confidence: 99%

Single and Multiband Acoustic-Wave-Lumped- Element-Resonator (AWLR) Bandpass Filters With Reconfigurable Transfer Function

Psychogiou

Gómez‐García

Peroulis

2016

IEEE Trans. Microwave Theory Techn.

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New types of single-and multiband acoustic-wave resonator-based bandpass filters (BPFs) with continuously variable transfer function in terms of bandwidth (BW), selectivity, and out-of-band isolation (IS) are presented. They are based on single-/multiband resonant branches that are shaped by high-quality-factor ( Q) acoustic-wave-lumped-element resonators (AWLRs) and are connected in parallel to an all-pass network through variable impedance inverters. With the proposed configuration, quasi-elliptic-type passbands with wide fractional BWs (FBWs)-i.e., larger than the electromechanical coupling coefficient k 2 t of its constituent acoustic-wave resonator-can be realized and continuously tuned while preserving the high-Q characteristics of its acoustic-wave resonators. Furthermore, by reconfiguring the location of the transmission zeros (TZs) of the AWLRs, tunable out-of-band IS profiles and asymmetrical passband BWs can be created. The operating principles of the devised spectrally agile filter concept are demonstrated through coupling-matrix-based synthesis and linear-circuit simulations. They are experimentally validated at the UHF band through the realization of: 1) a three-pole/six-TZ single-band prototype at 418 MHz with tunable BW between 0.16 and 0.49 MHz (FBW: 0.5-1.5k 2 t ) for an insertion loss (IL) between 3.3 and 1.2 dB (i.e., effective Q > 10 000), reconfigurable order (firstto-third-order states), out-of-band IS controllability in terms of BW (18-26.5 MHz at the upper stopband) and magnitude (23-46 dB at 426 MHz), and an intrinsically selectable allpass mode and 2) a six-pole/nine-TZ dual-band BPF with two transmission bands located at 418 and 433.9 MHz. They, respectively, feature symmetrical and asymmetrical BW tuning between 0.3-0.54 and 0.6-1.23 MHz with in-band IL <1.7 dB for all tunable states.Index Terms-Acoustic-wave filter, bandpass filter (BPF), k 2 t enhancement, multiband filter, quasi-elliptic-type filter, reconfigurable filter, RF/microwave filter, surface-acoustic-wave (SAW) resonator, tunable filter. 0018-9480

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Tunable RF band-pass filters based on NEMS magnetoelectric resonators

Cited by 13 publications

References 20 publications

Magnetoelastic Effects in Doubly Clamped Electroplated Co77Fe23 Microbeam Resonators

Magnetoelastic Effects in Doubly Clamped Electroplated Co77Fe23 Microbeam Resonators

A Review of Thin-Film Magnetoelastic Materials for Magnetoelectric Applications

Single and Multiband Acoustic-Wave-Lumped- Element-Resonator (AWLR) Bandpass Filters With Reconfigurable Transfer Function

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