Analysis of Second-Order LTCC Bandpass Filter with Two Finite Transmission Zeros
The paper proposes a new Low-temperature co-fired ceramic (LTCC) bandpass filter,which can be used to provide two finite transmission zeros in the lower stopband.The coupled electromagnet of the two stepped-impedance resonators (SIRs) is improved by adding a coupling pad. A feedback capacitor between input and output is also used to realize transmission zero. An equivalent lumped circuit is derived to explain the behaviors of the two finite transmission zeros.This filter operates at 2.45GHz and has a compact size of 2.5mm×2.0mm×0.9mm,which is widely used in Bluetoothwireless LAN transceiver system.
Zhi-Feng Zong Ya-Li Qin Fu-Liang Zhu Yu-Jie Zhao
Institute of Fiber-optic Communication and Information Engineering,College of Information Engineering,Zhejiang University of Technology,Hang Zhou 310032,China
国际会议
2008 Global Symposium on Millimeter Waves(GSMM 2008)(2008全球毫米波学术大会)
南京
英文
37-39
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）