{"title":"Analysis of Second-Order LTCC Bandpass Filter with Two Finite Transmission Zeros","authors":"Zhirui Zong, Yali Qin, F. Zhu, Yu-jie Zhao","doi":"10.1109/GSMM.2008.4534550","DOIUrl":null,"url":null,"abstract":"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 2.45 GHz and has a compact size of 2.5 mm times 2.0 mm times 0.9 mm,which is widely used in Bluetooth wireless LAN transceiver system.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 Global Symposium on Millimeter Waves","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/GSMM.2008.4534550","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
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 2.45 GHz and has a compact size of 2.5 mm times 2.0 mm times 0.9 mm,which is widely used in Bluetooth wireless LAN transceiver system.
本文提出了一种新型低温共烧陶瓷(LTCC)带通滤波器，它可以在下阻带提供两个有限传输零点。通过在两个阶跃阻抗谐振器(SIRs)中增加耦合垫，改善了耦合电磁铁的性能。输入和输出之间的反馈电容也用于实现传输零。该滤波器工作频率为2.45 GHz，具有2.5 mm × 2.0 mm × 0.9 mm的紧凑尺寸，广泛应用于蓝牙无线局域网收发器系统中。
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