Fast prototype‐based design approach to highly miniaturized LTCC BPFS for WLAN/WIMAX dual‐mode applications

A novel and fast prototype-based approach is presented to design LTCC band pass filters (BPFs) using two reflection zeros for 2.4 GHz WLAN / 2.3 GHz worldwide interoperability for microwave access dual-mode applications. The proposed approach derives quite compact formulas for synthesizing a filter prototype to meet the specification requirements in the passband insertion loss and stopband attenuation. From real-time prototype simulation prediction, one can efficiently minimize the filter size under various electrical specifications. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:8–11, 2014