A Hybrid Filter With Extremely Wide Bandwidth and High Selectivity Using FBAR Network

Wu, Haopeng; Wu, Yongle; Lai, Zhiguo; Wang, Weimin; Yang, Qinghua

doi:10.1109/tcsii.2022.3156725

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…In yet another approach, FBW widening is achieved through hybrid integration of AWRs and electromagnetic (EM) components. In [15], [16], AWRs are combined with microstrip transmission lines. Such an approach occupies large size due to the use of distributed elements.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Wave Resonator-Based Bandpass Filters With Continuously Tunable Fractional Bandwidth

Nasser

Psychogiou

2023

IEEE Trans. Circuits Syst. II

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A new class of acoustic-wave resonator-based bandpass filters (BPFs) with continuously tunable fractional bandwidth (FBW) are presented. They are based on cascaded multi-resonant stages of hybridly-integrated surface acoustic wave (SAW) resonators with lumped element (LE) components. Each stage comprises one SAW resonator and one or more LE resonators that contribute to the overall transfer function to one pole and two transmission zeros (TZs). As such highly-selective quasi-elliptic transfer functions with N poles, 2N TZs and enhanced FBW can be created for two series and N-2 parallel stages. It is shown that by reconfiguring the resonant frequency of the LE resonators, continuously-tunable FBWs can be obtained. The operating principles of the multi-stage concept are demonstrated through design examples of multi-stage prototypes. The concept has been validated at 916.6 MHz through a fourpole/eight-TZ BPF with tunable BW between 0.63-1.32 MHz (i.e., FBW=0.57 -1.32kt 2 ), minimum in-band insertion loss (IL) 3.9-2.3 dB (Qeff =7700-6000) and out-of-band isolation > 27 dB. Index Terms-Acoustic wave resonator (AWR), high quality factor (Q), tunable bandpass filter (BPF), kt 2 -enhancement.

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Section: Introductionmentioning

confidence: 99%

Acoustic Wave Resonator-Based Bandpass Filters With Continuously Tunable Fractional Bandwidth

Nasser

Psychogiou

2023

IEEE Trans. Circuits Syst. II

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“…Acoustic-wave resonators (AWR) such as surface acoustic wave (SAW) [2] and film bulk acoustic resonators (FBAR) [3] exhibit remarkable features in the field of integrated circuit design, with excellent quality factor (Q) and compact size. However, the confined electromechanical coupling coefficient of piezoelectric material limits their bandwidth and center frequency expansion, and starting from C-band, the performance of SAW/FBAR decreases sharply in broadband and high frequency [4][5][6], making it unsuitable for high frequency bands.…”

Section: Introductionmentioning

confidence: 99%

Wideband Substrate Integrated Waveguide Chip Filter Using Spoof Surface Plasmon Polariton

et al. 2022

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This article presents a novel wideband bandpass filter based on the integration of a substrate integrated waveguide (SIW) and a spoof surface plasmon polariton (SSPP). An SIW cavity with periodic arrays of meander-slot units is etched on the top metallic layer to achieve the characteristics of a multi-order filter with good performance. The passbands can be flexibly selected by varying the geometric parameters of the SIW and SSPP to adjust the lower and upper sidebands independently. Using a redistribution layer (RDL) process, a novel 3D capacitive interconnection called a through-dielectric capacitor (TDC) is proposed and collaboratively designed with an interdigital capacitor to achieve capacitive source-load cross-coupling. The proposed filter has a center frequency of 60 GHz, with a wide 3-dB fractional bandwidth of about 45.8%. The improved simulated sideband suppression has a 30 dB rejection at 40 GHz and 75.4 GHz, corresponding to a 30-dB rectangular coefficient of 1.28.

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An On-Chip Fractally Chipped FBAR Filter With Ba-Zn-Fe-Sc-O Thin Film in 5G-FR2 Millimeter-Wave Band

Cao

Wang

et al. 2023

IEEE Electron Device Lett.

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A Hybrid Filter With Extremely Wide Bandwidth and High Selectivity Using FBAR Network

Cited by 9 publications

References 13 publications

Acoustic Wave Resonator-Based Bandpass Filters With Continuously Tunable Fractional Bandwidth

Acoustic Wave Resonator-Based Bandpass Filters With Continuously Tunable Fractional Bandwidth

Wideband Substrate Integrated Waveguide Chip Filter Using Spoof Surface Plasmon Polariton

An On-Chip Fractally Chipped FBAR Filter With Ba-Zn-Fe-Sc-O Thin Film in 5G-FR2 Millimeter-Wave Band

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