Title :
LC-Notch-Filters Less Sensitive to LTCC Process Tolerances
Author :
Matters-Kammerer, Marion K. ; Reimann, Klaus
Author_Institution :
Philips Res. Labs., Eindhoven
Abstract :
A new design procedure for low temperature cofired ceramics integrated single inductance-capacitance (LC)-notch filters is described that minimizes the shift in resonance frequency due to process variations such as layer thickness and line-width variations. 25-mum thin layers of dielectric constant 7.8 and 17.9 were used for the experimental verification and further miniaturization of the layout. A two to five-fold reduction of the resonance frequency uncertainty was achieved compared to conventional designs. Application of these new single LC-notch filters in Bluetooth radio frequency-front-end modules is discussed
Keywords :
ceramics; dielectric materials; microwave filters; notch filters; 25 micron; Bluetooth; LC-notch-filters; LTCC process tolerances; dielectric constant; inductance-capacitance-notch filters; layer thickness variations; line-width variations; low temperature cofired ceramics; radio frequency-front-end modules; resonance frequency; transmission line resonator; Capacitance; Capacitors; Ceramics; Distributed parameter circuits; Impedance; Inductance; Radio frequency; Resonance; Resonant frequency; Resonator filters; Circuit modeling; circuit optimization; sensitivity; transmission line resonator;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.879485
