Hagelauer, AmelieAmelieHagelauerRuby, RichRichRubyInoue, ShogoShogoInouePlessky, VictorVictorPlesskyHashimoto, Ken-YaKen-YaHashimotoNakagawa, RyoRyoNakagawaVerdu, JordiJordiVerduPaco, Pedro dePedro dePacoMortazawi, AmirAmirMortazawiPiazza, GianlucaGianlucaPiazzaSchaffer, ZacharyZacharySchafferYen, Ernest Ting-TaErnest Ting-TaYenForster, ThomasThomasForsterTag, AndreasAndreasTag2023-01-162023-01-162023https://publica.fraunhofer.de/handle/publica/43393110.1109/JMW.2022.3226415This paper reviews the latest developments in microwave acoustic wave devices. After an introduction and brief history of bulk acoustic wave (BAW) and surface acoustic wave (SAW) devices, a review is given for guided SAWs and XBARs - two new technologies, which are promising for future 5G applications. Following this, we discuss recent simulation techniques, such as 3D finite element method (3D FEM) and simulation of nonlinearities, as well as filter synthesis. Next, a review on tunable and reconfigurable acoustics is given. Finally, we present the latest developments in microwave acoustics for millimeter-wave (mm-wave) operation as well as BAW oscillators.enSurface acoustic wavesSubstratesResonatorsMicrowave filtersMobile handsetsSurface acoustic wave devicesElectrodesBulk acoustic wave (BAW) devicesfilterfilter-synthesisfront-endhigh powerMTT 70th Anniversary Special Issuemultiplexernonlinearitysurface acoustic wave (SAW) devicesresonatorjournal article