公开(公告)号：USRE40292E1

公开(公告)日：2008-05-06

申请号：US10726331

申请日：2003-12-02

Applicant: Lothar Musiol ,  Ralph Kuhn

Inventor： Lothar Musiol ,  Ralph Kuhn

IPC: H03K5/00

CPC classification number: H03H7/1783 ,  H03H7/0115 ,  H03H7/075 ,  H03H7/1791 ,  H03H2240/00 ,  H03J5/244

Abstract: The bandpass filter has a comparatively large pass bandwidth, with, at the same time, comparatively steep edges up to the stop band and low attenuation in the passband. The bandpass filter contains three parallel LC elements, one of which is connected between the bandpass filter input and the bandpass filter output. The other two parallel LC elements each have one of their connections coupled to a fixed reference-ground potential.

Abstract translation: 带通滤波器具有相对较大的通带宽度，同时具有比较陡峭的边缘，直到阻带和通带中的低衰减。 带通滤波器包含三个并联的LC元件，其中一个连接在带通滤波器输入和带通滤波器输出之间。 另外两个平行的LC元件各自具有耦合到固定的参考地电位的其一个连接。

公开(公告)号：US06452645B1

公开(公告)日：2002-09-17

申请号：US09281821

申请日：1999-03-30

Applicant: Ralph Kuhn ,  Lothar Musiol

Inventor： Ralph Kuhn ,  Lothar Musiol

IPC: H04N544

CPC classification number: H04N5/50 ,  H03F3/72 ,  H03F2203/7209 ,  H04N21/4263

Abstract: The multiple preamplifier circuit for a television tuner has at least one first band with an amplification stage and a second band with an amplification stage. The amplification stage of the first band and the amplification stage of the second band are commonly integrated in a common chip for both bands. The band switching signal and an amplification control signal are applied directly to the common chip.

Abstract translation: 用于电视调谐器的多个前置放大器电路具有至少一个具有放大级的第一频带和具有放大级的第二频带。 第一频带的放大级和第二频带的放大级通常集成在两个频带的公共芯片中。 频带切换信号和放大控制信号被直接应用于公共芯片。

公开(公告)号：US06525600B1

公开(公告)日：2003-02-25

申请号：US09477131

申请日：2000-01-03

Applicant: Lothar Musiol ,  Ralph Kuhn

Inventor： Lothar Musiol ,  Ralph Kuhn

IPC: H03K500

CPC classification number: H03H7/1783 ,  H03H7/0115 ,  H03H7/075 ,  H03H7/1791 ,  H03H2240/00 ,  H03J5/244

Abstract: The bandpass filter has a comparatively large pass bandwidth, with, at the same time, comparatively steep edges up to the stop band and low attenuation in the passband. The bandpass filter contains three parallel LC elements, one of which is connected between the bandpass filter input and the bandpass filter output. The other two parallel LC elements each have one of their connections coupled to a fixed reference-ground potential.

Abstract translation: 带通滤波器具有相对较大的通带宽度，同时具有比较陡峭的边缘，直到阻带和通带中的低衰减。 带通滤波器包含三个并联的LC元件，其中一个连接在带通滤波器输入和带通滤波器输出之间。 另外两个平行的LC元件各自具有耦合到固定的参考地电位的其一个连接。