Design of narrow-band transversely coupled and balanced bridge resonator filters using equivalent circuit and P-matrix models

Chvets, V. B.; Orlov, V. S.; Rusakov, A.N.; Schwarz, A.L.

doi:10.1109/ultsym.2000.922511

Cited by 5 publications

(2 citation statements)

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“…The bandwidths 4 BW =0.483% and 5 BW =0.478% can be achieved in TCRFs with purely acoustically coupled four-and five-resonator structures, respectively. Spurious resonances in the stop band reduce the real bandwidth approximately by factor about 2.…”

Section: Resultsmentioning

confidence: 99%

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Design of wide band transversely coupled resonator filters on quartz

Chvets¹,

Schwartz²,

Orlov³

2002 IEEE Ultrasonics Symposium, 2002. Proceedings.

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Typical relative bandwidth of transversely coupled resonator filters (TCRF) on quartz wafers varies between BW =0.05 to 0.1%. In this paper, we investigate the factors restricting the bandwidth and describe some specific features of designing TCRF with more expanded bandwidth BW =0.15-0.3%, on quartz. The results of investigation are illustrated by experimental characteristics of four TCRF types: 315 MHz filter with BW =0.28%, 248 MHz filter with BW =0.18%, 402 MHz filter with BW =0.125% and 360 MHz filter with BW =0.064%. All filters are manufactured on quartz wafer, cut 33.3°-YX, in packages SMD 3.8x3.8x1.4 mm.

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Section: Resultsmentioning

confidence: 99%

“…The modified Mason model of equivalent circuits [5] was used to design a single oneport resonator or a pair of acoustically coupled resonators both at fundamental and spurious modes. The model of equivalent electrical ladder circuit of monolithic crystal filters (MCF) [6] was used to estimate the characteristics of multi-section TCRFs.…”

Section: Introductionmentioning

confidence: 99%