AD1584BRTZ-REEL7_AD2135 Introduction

688367214G changes life, 5G changes society, but this change is not so easy. . This reflects, to a certain extent, the speed at which 5G communications are advancing at the individual user level. According to the China Academy of Information and Communications Technology, domestic 5G mobile phone shipments from January to April 2021 will be 91.267 million units, accounting for 72.7% of the overall market, a year-on-year increase of 38.4%. 2020 is the first year of global 5G commercialization as defined by ITU, and China will be a year earlier.

The TPS62840 joins TI's portfolio of highly integrated low-IQ DC/DC converters, enabling designers to maximize power output in the smallest possible solution size.

AD1584BRTZ-REEL7_AD2135

AD1860N

AD1582BRT-REEL7 AD1582BRTZ AD1582BRTZ AD1582BRTZ-REEL7 AD1582CRT-REEL7.

AD1201BRZ AD1210BRZ AD1251ARZ AD1332BD AD1334BD.

AD1583BRTZ AD1583BRTZ AD1583BRTZ-REEL7 AD1583BRTZ-REEL7 AD1583BRTZ-REEL7.

AD11/2016-0REEL AD11/2041-0REEL AD11/2041-0REEL AD1100ARZ AD1111A-ADJ.

AD1584BRTZ-REEL7_AD2135

AD22226S1

AD1201BRZ AD1210BRZ AD1251ARZ AD1332BD AD1334BD.

AD1022A1RQ AD1022A1RQ AD1022A2RQ AD1022A2RQ AD1022ARQ.

AD1584ART-RELL7 AD1584ARTZ AD1584ARTZ AD1584ARTZ-R2 AD1584ARTZ-REEL7.

AD1028ARQ AD1028ARQ AD1030ARQ AD1030ARQ AD1031A-RQ.

AD1584BRTZ-REEL7_AD2135

There are many types of BAW filters, including ladder type filter, lattice type filter, stacked crystal filter and coupled resonator filter. The BAW filter can connect multiple resonators according to a certain topology. Only the ladder type and lattice type are briefly introduced here.

The working principle is as shown below. The typical basic structure is shown in the figure (a) above, with the piezoelectric layer sandwiched between the upper and lower metal electrodes, the corresponding mBVD equivalent circuit is shown in the figure (b) above, and the corresponding impedance is shown in the figure (c) above. It can be seen that there are two resonance frequencies, series (fs) and parallel (fp).

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