Wide piezoelectric tuning of LTCC bandpass filters [Elektronische Ressource] / Mahmoud al Ahmad

Wide Piezoelectric Tuning of LTCC Bandpass FiltersMahmoud Al AhmadLehrstuhl fu¨r Hochfrequenztechnik der Technischen Universit¨at Mu¨nchenWide Piezoelectric Tuning of LTCC Bandpass FiltersMahmoud Al AhmadVollst¨andiger Abdruck der von der Fakult¨at fu¨r Elektrotechnik und Informa-tionstechnikderTechnischenUniversit¨atMu¨nchenzurErlangungdesakademis-chen Grades einesDoktor–Ingenieursgenehmigten Dissertation.Vorsitzender: Univ.-Prof. Dr.-Ing. Wolfgang UtschickPru¨fer der Dissertation: 1. Univ.-Prof. Dr. techn. Peter Russer2. Univ.-Prof. Dr.-Ing. habil. Robert WeigelFriedrich-Alexander-Universit¨at Erlangen-Nu¨rnbergDieDissertationwurdeam14.09.2005beiderTechnischenUniversit¨atMu¨ncheneingereicht und durch die Fakult¨at fu¨r Elektrotechnik und Informationstechnikam 18.04.2006 angenommen.AbstractThis work treats design and fabrication issues associated with innovative tunable front–endcomponents which combine two different ceramic technologies, namely multilayer ceramic cir-cuit boards (low temperature cofired ceramics or LTCC) and piezoelectric actuator technologywithin a single device. The need for such components is particularly arising due to the in-creasing number of wireless services and associated frequency bands in the range between 0.5and 2.5 GHz.