Intrinsically switchable, BST-on-silicon composite FBARs

Sis, Seyit Ahmet; Lee, Victor; Mortazawi, Amir

doi:10.1109/mwsym.2011.5972960

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…The last investigated way is to use electrostrictive materials directly in the resonator. [34][35] For example AlN exhibits also electrostrictive behaviour. 36 The most important points can be summarised by the following requirements for new materials: tunable materials, low cost fabrication process, frequencies of operation up to few GHz for mass market of telecommunications.…”

Section: Conclusion and Trendsmentioning

confidence: 99%

Piezoelectric materials and their applications in radio frequency domain and telecommunications

Benech

Duchamp

2015

Advances in Applied Ceramics

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The market of telecommunications has grown rapidly this last decade. The main parameter regarding users is the data rate. It must be increased with each new standard. To reach this goal, the constraints on electronics circuits and devices for radio frequency front end had increased drastically, particularly to obtain high quality radio frequency filters. In this context, piezoelectric materials and devices offer the only way to get radio frequency filters with low insertion losses and high out of band rejection at the same time. A lot of works were performed by several research teams in the world, devoted to materials, to technological steps and to devices. Among piezoelectric materials, some of them are candidates for telecommunications applications. After a review of the main piezoelectric materials, the desired characteristics have been analysed, and finally, few materials are retained. The trends in functionality terms and consequently of required materials for filters are presented for future generations.

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Section: Conclusion and Trendsmentioning

confidence: 99%

Piezoelectric materials and their applications in radio frequency domain and telecommunications

Benech

Duchamp

2015

Advances in Applied Ceramics

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“…[75][76][77][78][79][80] These resonators have applications as switchable filters in cell phones over surface acoustic wave devices because of their small size, high quality factor, sharp filter skirts, and ease of integration. They can also be used in voltage controlled oscillators with reduced phase noise.…”

Section: Tunable Bulk Acoustic Wave Resonators With Bst Thin Filmsmentioning

confidence: 99%

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Subramanyam¹,

Cole²,

Sun³

et al. 2013

Journal of Applied Physics

147

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There has been significant progress on the fundamental science and technological applications of complex oxides and multiferroics. Among complex oxide thin films, barium strontium titanate (BST) has become the material of choice for room-temperature-based voltage-tunable dielectric thin films, due to its large dielectric tunability and low microwave loss at room temperature. BST thin film varactor technology based reconfigurable radio frequency (RF)/microwave components have been demonstrated with the potential to lower the size, weight, and power needs of a future generation of communication and radar systems. Low-power multiferroic devices have also been recently demonstrated. Strong magneto-electric coupling has also been demonstrated in different multiferroic heterostructures, which show giant voltage control of the ferromagnetic resonance frequency of more than two octaves. This manuscript reviews recent advances in the processing, and application development for the complex oxides and multiferroics, with the focus on voltage tunable RF/microwave components. The over-arching goal of this review is to provide a synopsis of the current state-of the-art of complex oxide and multiferroic thin film materials and devices, identify technical issues and technical challenges that need to be overcome for successful insertion of the technology for both military and commercial applications, and provide mitigation strategies to address these technical challenges. V C 2013 AIP Publishing LLC.

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“…(a) COMSOL simulation results[9] of the split resonance modes due to the acoustic coupling between two FBARs. The left simulation result shows the in-phase resonance mode and the right simulation result shows the out-of-phase resonance mode.…”

mentioning

confidence: 99%

Intrinsically switchable ferroelectric bulk acoustic wave filters based on barium strontium titanate thin films

Lee

Sis

Lee

et al. 2013

2013 IEEE International Wireless Symposium (IWS)

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Single-standard wireless transceivers are of limited use as multi-mode devices become ubiquitous. Adaptive and reconfigurable RF circuits are necessary to decrease size, cost, and power consumption as well as increase reliability and robustness of wireless devices. In this paper, the design, fabrication, and performance of acoustically coupled and electrically coupled filters based on the ferroelectric barium strontium titanate are discussed. In their off state, the input and output ports are isolated from one another. When switched on with the application of a dc bias voltage, a bandpass filter response is obtained.

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Intrinsically switchable, BST-on-silicon composite FBARs

Cited by 4 publications

References 14 publications

Piezoelectric materials and their applications in radio frequency domain and telecommunications

Piezoelectric materials and their applications in radio frequency domain and telecommunications

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Intrinsically switchable ferroelectric bulk acoustic wave filters based on barium strontium titanate thin films

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