A Design Structure of the Breakthrough Hole for a Chip Resistor in a Power Divider with Wires

Abstract

The invention belongs to machining and multilayer microwave circuit board assembling, and belongs to the field of microstrip circuit design. In the technical scheme, a rectangular resistor avoidance hole is formed in the area where resistor holes / grooves at the intervals of smaller than 10mm are located on a wired power divider, the length of the rectangular resistor avoidance hole is resistor length plus 1.8mm + / -0.2mm, and the width of the rectangular resistor avoidance hole is resistor width multiplied by the quantity in each group of resistors plus all resistor spacings plus 1mm + / -0.2mm; the resistors are placed in the rectangular resistor avoidance hole; the rectangular resistor avoidance hole is covered with a resistor cover plate, the resistor cover plate is rectangular, the length of the resistor cover plate is the resistor length plus 1.6mm + / -0.2mm, the width of the resistor cover plate is the resistor width multiplied by the quantity in each group of resistors plus all resistor spacings plus 0.8mm + / -0.2mm, the resistor cover plate is thinned relative to the area of the resistors, the thinned thickness is resistor thickness plus 0.1mm + / -0.1mm, and the thinned width is twice of the resistor width.

Description

technical field [0001] The invention belongs to mechanical processing and multi-layer microwave circuit board assembly, and belongs to the field of microstrip circuit design. Background technique [0002] A large number of power dividers are used in electronic equipment systems such as radar and communication as the feed network for signal transmission and distribution, especially in the electronic system of the phased array system. Internal flatness, high isolation between channels, etc. are widely used. [0003] Circuits such as power dividers in the microwave frequency band are generally processed by the printed circuit board process. The circuit pattern (metal) can be guaranteed high accuracy through photography, development, etching and other processes, such as ±0.03mm, but the shape of the circuit board Machining, post-drilling (compared to the need for metallization and other holes have been processed) and other processing errors are large, generally ± 0.1mm. [000...

AI Technical Summary

Problems solved by technology

However, the lower working tolerance requirements lead to an increase in the matching gap between the relief hole and the resistor cover, resulting in obvious inconsistency and discontinuity in the materials constituting the strip line, which eventually leads to a decline or even deterioration in circuit performance.

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