公开(公告)号：US4612521A

公开(公告)日：1986-09-16

申请号：US710826

申请日：1985-03-12

Applicant: Marcus Kleefstra ,  Antonius J. M. Montagne ,  Jan W. Pathuis

Inventor： Marcus Kleefstra ,  Antonius J. M. Montagne ,  Jan W. Pathuis

IPC: G05F3/22 ,  H01L29/765 ,  H03H15/02 ,  H03K5/153

CPC classification number: G05F3/225 ,  H01L29/765 ,  H03H15/023

Abstract: The invention relates to a charged-coupled transversal filter of the parallel-in series-out (PISO) type having a buried channel of one conductivity type and zones diffused into the channel of the other conductivity type, which zones constitute the clock electrodes. The inputs also comprise a zone of the one conductivity type which is provided in the associated zone of the second conductivity type. The weighting factors are formed by selecting the sizes of these zones, which constitute the emitters of bipolar transistors, whose bases are constituted by the clock electrodes and whose collectors are constituted by the channel. The signal to be filtered is introduced by first converting the signal into a current and by then distributing the latter over the various emitters. Stages having positive and negative weighting factors can be readily combined to form a CCD.

Abstract translation: 本发明涉及一种并联串联（PISO）型的带电耦合横向滤波器，其具有一个导电类型的掩埋沟道和扩散到另一导电类型的沟道中的区域，这些区域构成时钟电极。 输入还包括设置在第二导电类型的相关区域中的一种导电类型的区域。 通过选择构成双极晶体管的发射极的这些区域的尺寸形成加权系数，双极晶体管的基极由时钟电极构成，其集电极由沟道构成。 通过首先将信号转换为电流并随后将其分配在各种发射器上来引入要滤波的信号。 具有正和负加权因子的阶段可以容易地组合以形成CCD。