Impedance balance degree analysis method of on-chip power combiner

Abstract

The invention discloses an impedance balance degree analysis method of an on-chip power combiner. The method comprises the following steps: firstly, determining a circuit model represented by lumped elements according to an actual physical structure and the number of ports of the power combiner; then, an input port is connected to an alternating voltage exciter; other input ports are connected toa resistor, an output port is connected to a load, a current path is analyzed, the input impedance of the corresponding input port is calculated, an alternating current ground node is regarded as an intermediate node of the current path in the analysis process, the path of the current path is determined by searching the minimum branch current, and the impedance on the path is calculated; and finally, calculating the balance degree between the input ports according to the input impedance of each port and the expression of the balance degree. Compared with a traditional method that a large number of computers and time resources are needed for simulation analysis, when the method is used for analyzing the on-chip power combiner, the process is simpler and more convenient, consumed time is shorter, and the source of balance degree mismatch can be found.

Description

technical field [0001] The invention relates to an analysis method of a passive device, in particular to an analysis method of an impedance balance degree of an on-chip power combiner. Background technique [0002] Impedance balance is a qualitative measure of the difference in input impedance in most circuit analysis scenarios, but there are also a few that have been published in conferences and journals in the field of integrated circuits. The difference between the input impedance of any two ports divided by the sum of the input impedance To quantitatively describe and compare the definition of balance. The input impedance refers to a complex impedance including a real part and an imaginary part, which is defined as the voltage on the complex plane divided by the current on the complex plane. [0003] However, for the calculation and evaluation of the degree of balance, the current mainstream methods are still in the simulation analysis using various software. The core o...

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Problems solved by technology

This method needs to consume a lot of computer hardware and software resources, and it will also take a lot of time, and for the designer, it is impossible to analyze the cause of the balance mismatch by using this method

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