Passive multilevel wave filter

A polyphase filter, passive type technology, applied in multi-terminal pair network, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of different relative deviations and difficulty in obtaining resistance values, etc.
CN1855708AInactive Publication Date: 2006-11-01コラボイノベーションズインコーポレイテッド
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
コラボイノベーションズインコーポレイテッド
Publication Date
2006-11-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

Four input nodes for inputting 4-phase signals, four resistors, four capacitors, and four output nodes for outputting 4-phase signals are provided. The resistors and the capacitors are connected alternately in a loop, and the input nodes and output nodes are connected alternately to the respective nodes between the resistors and the capacitors sequentially. Each of the four resistors is composed of a group of three or more partial resistors, and three groups of the partial resistors are collected respectively and arranged in the same attitude, while the partial resistors of the remaining group are distributed into the other groups and arranged in the same line the same attitude as the partial resistors of each of the other groups. The regions of the thus collected groups are arranged in one direction. By simplifying the layout of the components and the shape of the wirings, influences on the characteristics by the parasitic elements are reduced, and complication in the layout and wirings can be suppressed even when using plural stages.
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Description

technical field

[0001] The present invention relates to a passive polyphase filter (complex filter) used for image suppression in signal processing of electronic equipment, and in particular to improvements in arrangement of resistors, capacitors, and input / output terminals as constituent elements. Background technique

[0002] Passive type polyphase filters used in image suppression, etc. in signal processing of electronic equipment, for example, in the case of 4-phase input, have such Figure 20 The circuit configuration shown. Connect resistors R1, R2, R3, R4 and capacitors C1, C2, C3, C4 in a ring to form Figure 20 The passive polyphase filter, I1, I2, I3, I4 are the input terminals of the input signal, O1, O2, O3, O4 are the output terminals of the output signal. Resistors R1 to R4 have the same resistance value, and capacitors C1 to C4 have the same capacitance value.

[0003] exist Figure 20 In the circuit, as the signal processing from the input terminal I1 to the...

Claims

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