Gold wire bonding capacitance compensation in three-dimensional encapsulated circuit and design method of capacitance compensation
A capacitance compensation and gold wire bonding technology, applied in circuits, including printed capacitors, electrical components, etc., can solve the problems of limited improvement of microwave transmission performance, occupation of design space, etc., to reduce area and insertion loss. , the effect of increased return loss
Active Publication Date: 2017-08-18
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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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
Method used
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[0031] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.
[0032] Such as figure 1 As shown, it is a three-dimensional diagram of the multilayer circuit gold wire bonding capacitance compensation design method according to the present invention, the gold wire bonding wire (F301) is connected to two 50 ohm first transmission lines (F101) and the second transmission line (F102) between. Wherein, the 50 ohm first transmission line (F101) can be an input port or an output port, correspondingly, the 50 ohm second transmission line (F102) is an output port or an input port, and the two 50 ohm first transmission lines Both (F101) and the second transmission line (F102) are in t...
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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 ...
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IPC IPC(8): H01L23/66H01P5/02H05K1/16
CPCH01L23/66H01P5/02H05K1/162
Inventor 朱浩然倪涛戴跃飞
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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