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131. 发明申请

US20050077984A1 Laminated low pass filter 审中-公开
标题翻译：层压低通滤波器
公开(公告)号：US20050077984A1
公开(公告)日：2005-04-14
申请号：US10735616
申请日：2003-12-16
申请人： Byoung Lee , Jeong Yoon , Yong Park , Dong Park , Sang Park , Min Park
发明人： Byoung Lee , Jeong Yoon , Yong Park , Dong Park , Sang Park , Min Park
IPC分类号： H03H7/075 , H01P1/203
CPC分类号： H01P1/2039
摘要： A laminated low pass filter including a dielectric block having a plurality of laminated dielectric layers, input and output electrodes and outer ground electrodes formed on outer side surfaces of the dielectric block, so as to pass therethrough a signal inputted to the outer input electrode, only in a low frequency band, and then to output the passed signal to the outer output electrode. The laminated low pass filter also includes a transmission line including a distributed constant element made of a strip line formed on a first one of the dielectric layers, while being uniformly distributed with an inductance and a capacitance, the distributed constant element being connected between the input electrode and the output electrode, and a capacitor electrode structure having at least two layers while being connected between the input electrode and the output electrode. The capacitance electrode structure forms a capacitance connected in parallel to the transmission line. Since the laminated low pass filter is simply implemented by use of the transmission line and capacitors formed on the dielectric block having a multilayer structure, it can have a miniature size while exhibiting improved insertion loss characteristics, as compared to conventional laminated low pass filters implemented by use of concentrated constant elements.
摘要翻译：一种层叠低通滤波器，包括具有多个叠层电介质层的介质块，形成在介质块的外侧表面上的输入和输出电极和外部接地电极，以便仅通过输入到外部输入电极的信号在低频带中，然后将通过的信号输出到外部输出电极。层叠低通滤波器还包括传输线，其包括由形成在第一介质层上的带状线制成的分布常数元件，同时以电感和电容均匀分布，分布常数元件连接在输入电极和输出电极，以及具有至少两层的电容器电极结构，同时连接在输入电极和输出电极之间。电容电极结构形成与传输线并联连接的电容。由于层叠低通滤波器简单地通过使用传输线和形成在具有多层结构的介质块上的电容器来实现，与传统的层叠低通滤波器相比，它可以具有小尺寸，同时具有改进的插入损耗特性，使用集中的常数元素。

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