公开(公告)号：US5604471A

公开(公告)日：1997-02-18

申请号：US403380

申请日：1995-03-15

申请人： Tapio Rattila ,  Pertti Puurunen ,  Seppo Salmela ,  Jarmo Valtonen ,  Kari Lohtander

发明人： Tapio Rattila ,  Pertti Puurunen ,  Seppo Salmela ,  Jarmo Valtonen ,  Kari Lohtander

IPC分类号： H01P1/20 ,  H01P7/00

CPC分类号： H01P7/005

摘要： The present invention relates to a coupling element (21) by which the coupling of a resonator (24) is adjusted in a radio frequency filter. The coupling element of the invention is a strip made of flexible conductor material being shaped symmetrical relative to the normal, that is, the symmetry axis of the longitudinal axis extending via the centrepoint of the strip in the longitudinal direction. The strip (21) is fixed at least at two points of an edge in the longitudinal direction to the circuit board (25) either by surface mounting on pads (33, 35, 36) or by soldering into holes borred in the circuit board to be at appropriate space from the resonator coil (34) and from the surface of the circuit board (25). One (33) of the fixing points is grounded and another (36) is connected to the signal conductor in the filter. The coupling can easily be adjusted by bending the board relative to the symmetry axis either one-sidedly or on both sides.

摘要翻译： 本发明涉及耦合元件（21），在射频滤波器中调节谐振器（24）的耦合。 本发明的耦合元件是由柔性导体材料制成的条带，其相对于法线成对称的形状，即纵向轴线的对称轴线沿着纵向方向延伸穿过条带的中心点。 条带（21）通过表面安装在焊盘（33,35,36）上或通过焊接到电路板中的孔中而至少在纵向方向上的边缘的两个点处固定到电路板（25），以至 在谐振器线圈（34）和电路板（25）的表面的适当空间处。 一个（33）的固定点接地，另一个（36）连接到过滤器中的信号导体。 可以通过单面或两侧相对于对称轴弯曲板来容易地调整联轴器。