User: Guest  Login
Author(s):
Al-Ahmad, Mahmoud; Maenner, Ruth; Matz, Richard; Russer, Peter 
Title:
Wide Piezoelectric Tuning of LTCC Bandpass Filters 
Abstract:
The increasing number of frequency bands and services in wireless communications is causing a demand for analogue active and passive frontend components with wide bandwidth or tuning range, respectively. Similar to micro-electromechanical systems (MEMS), this work presents a parallel plate capacitor with multilayer dielectrics and piezoelectrically movable top electrode as an advantageous tunable element with no addition of any lossy material. When applied as a shunt capacitor in a coupled micro...    »
 
Keywords:
0.8 to 2.8 GHz, 1.1 to 2.6 GHz, 2 to 4 dB, 200 V, band-pass filters, capacitors, circuit tuning, coupled circuits, coupled microstrip-line LTCC bandpass filter, crystal filters, filter tuning, microstrip filters, multilayer dielectrics, parallel plate capacitors, piezoelectric materials, piezoelectrical movable top electrode, shunt capacitors, thin film processing, tunable filters, UHF filters, wide piezoelectric tuning 
Book / Congress title:
IEEE MTT-S International Microwave Symposium 
Publisher address:
Long Beach, USA 
Year:
2005 
Month:
jun 
Pages:
1275--1278 
Print-ISBN:
01490-645X