Capacitance compensation and design method of gold wire bonding in a three-dimensional package circuit

Abstract

The invention discloses Gold wire bonding capacitance compensation in a three-dimensional encapsulated circuit. The invention involves a microwave multilayer circuit dielectric substrate. A capacitance compensation structure is arranged on a first layer transmission wire on the surface of the microwave multilayer circuit dielectric substrate. A capacitance compensation structure is arranged on a middle layer transmission wire in the vertical direction of the microwave multilayer circuit dielectric substrate. The transmission lines are in interconnection through gold wire bond wires. According to the invention, a problem of impedance matching of gold wire bonding in the three-dimensional encapsulated circuit is solved effectively. Space of the multilayer circuit is utilized fully for design of the capacitance compensation structure for parasitic inductance effect of gold wire bonding, especially the capacitance compensation structure added in the vertical direction. Compared with a prior art, area required for capacitance compensation merely on the surface layer transmission wire can be reduced. By adopting the structure provided by the invention, microwave transmission characteristics between transmission wires and chips and between transmission wires and transmission wires in a multi-chip circuit can be improved.

Description

technical field [0001] The invention relates to the technical field of microwave and millimeter wave packaged circuits, in particular to a capacitance compensation for gold wire bonding in a three-dimensional packaged circuit and a design method thereof. Background technique [0002] In the fields of radar, electronic countermeasures and communications, electronic systems are gradually developing towards high density, high speed, high reliability, high performance and low cost. As a representative of hybrid circuit integration technology, multi-chip circuits can design bare chips and various components into microwave integrated circuits that meet the needs in three-dimensional, multi-layer dielectric substrates and using micro-assembly and interconnection technology. [0003] In microwave multi-chip circuit technology, gold wire bonding technology is often used to realize the interconnection between microstrip transmission lines, monolithic microwave integrated circuits and ...

AI Technical Summary

Problems solved by technology

However, these capacitive compensation methods for gold wire bonding generally have a problem, that is, the capacitive compensation structure is only designed on the surface transmission line, which greatly occupies the design space

In miniaturized, multi-channel packaged circuits, obviously there is not so much area for impedance matching design of gold wire bonding

In addition, these methods of capacitive compensation design only by increasing the size of the pad have limited improvement in microwave transmission performance

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