Nonlinear effects in acousto-electric devices

Schmidhammer, E.

doi:10.1109/eccsc.2008.4611681

Cited by 10 publications

(4 citation statements)

References 7 publications

(10 reference statements)

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“…are used to improve the linearity of acoustic resonators. [21] The power handling capability of the FBAR and SMR antennas was characterized by the power sweep results shown in Figure 4f. The P1dB is acquired by measuring the S 21 curves as a function of input power.…”

Section: Mechanical Me Antenna Performancementioning

confidence: 99%

Mechanically Driven Solidly Mounted Resonator‐Based Nanoelectromechanical Systems Magnetoelectric Antennas

et al. 2023

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The miniaturization of antennas has been a significant challenge in the field of electronics and telecommunications. In recent years, mechanically driven thin‐film bulk acoustic resonator (FBAR) magnetoelectric (ME) antennas have emerged as a promising solution, demonstrating superior miniaturization capabilities compared to conventional state‐of‐the‐art compact antennas. While nanoelectromechanical systems (NEMS) FBAR ME antennas exhibit high miniaturization potential, their suspended thin‐film heterostructures render them fragile and exhibit low power handling capabilities. The findings demonstrate that solidly mounted resonator (SMR) NEMS ME antennas on a Bragg acoustic resonant reflector offer a compelling solution. With a circular resonating disk of 200 μm diameter operating at 1.75 GHz, these SMR‐based antennas display a high antenna gain of −18.8 dBi and a 1 dB compression point (P1dB) of 30.4 dBm. Compared to same‐size FBAR ME antennas with a free‐standing membrane, SMR‐based antennas exhibit significantly higher structural stability and 23.3 dB stronger power handling capability, in addition to easier fabrication processes. The compatibility of the simple fabrication processes with complementary metal–oxide–semiconductor technology, along with the dramatic miniaturization, high power handling, robust mechanical properties, and much higher antenna radiation gain, make these SMR‐based ME antennas a promising candidate for future antenna systems.

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Section: Mechanical Me Antenna Performancementioning

confidence: 99%

Mechanically Driven Solidly Mounted Resonator‐Based Nanoelectromechanical Systems Magnetoelectric Antennas

et al. 2023

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“…Since the power density and temperature play significant roles in controlling the nonlinearity, various methods such as the device structure, area and materials etc. are used to improve the linearity of acoustic resonators 46 .…”

Section: Mechanical Me Antenna Performancementioning

confidence: 99%

Mechanically driven SMR-based NEMS magnetoelectric antennas

Liang

Chen

Sun

et al. 2021

Preprint

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Mechanically driven magnetoelectric (ME) antennas have been demonstrated to be one of the most effective methods to miniaturise antennas compared to state-of-the-art compact antennas. However, the nanoelectromechanical systems (NEMS) ME antennas are fragile due to their suspended thin-film heterostructure, and have very low power handling capabilities. Here we show that solidly mounted resonator (SMR)-based NEMS ME antennas on a Bragg acoustic resonator, which have a circular resonating disk of 200 μm diameters and operate at 1.75 GHz, show a high antenna gain of -18.8 dBi and 1dB compression point (P1dB) of 30.4 dBm. Compared to same-size thin-film bulk acoustic resonator (FBAR) ME antennas with a free-standing membrane, the SMR-based antennas are much more structurally stable with 23.3 dB higher power handling capability and easier fabrication steps. These SMR-based ME antennas are fabricated with processes compatible with complementary metal-oxide-semiconductor (CMOS), exhibiting dramatic size miniaturisation, high power handling, high mechanical robustness, simple fabrication processes, and much higher antenna radiation gain compared to same-size state-of-the-art antennas.

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“…While BAW devices are well adapted to the linearity requirements, it has been reported, that they exhibit nonlinearities at high power levels [4,5], which may conflict with the stringent linearity requirements in CDMA systems.…”

Section: Introductionmentioning

confidence: 98%

“…Thereby, duplexer requirements which relate to second order products in BAW devices are particularly critical [4].…”

Section: Introductionmentioning

confidence: 99%

Stacked crystal resonator: A highly linear BAW device

Handtmann¹,

Gebauer²,

Franosch³

et al. 2009

2009 IEEE International Ultrasonics Symposium

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Besides small size, exceptional insertion loss and outstanding isolation, bulk acoustic wave (BAW) filters and duplexers are often the preferred choice in the transmit path of mobile frontend due to their excellent power handling capabilities. However, they exhibit a nonlinear behavior, causing generation of higher harmonics and a sensitivity of the resonance frequency towards a DC voltage bias. In this paper we present a new BAW device, a stacked crystal resonator (SCR), which intrinsically cancels out the second order nonlinearity and compare it to standard BAW resonators and current solutions for improved linearity. Measurements of first devices demonstrate a 30dB improvement in worst case second order harmonic generation of a SCR over a standard BAW solid mounted resonator. Furthermore, the frequency sensitivity on a DC voltage bias is reduced by a factor of 20 and the coupling coefficient increased by 10%.Bulk acoustic wave resonator; BAW; nonlinearity; stacked crystal resonator; SCR

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Nonlinear effects in acousto-electric devices

Cited by 10 publications

References 7 publications

Mechanically Driven Solidly Mounted Resonator‐Based Nanoelectromechanical Systems Magnetoelectric Antennas

Mechanically Driven Solidly Mounted Resonator‐Based Nanoelectromechanical Systems Magnetoelectric Antennas

Mechanically driven SMR-based NEMS magnetoelectric antennas

Stacked crystal resonator: A highly linear BAW device

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