Method for Establishing Radio Frequency Parameter Model of Radio Frequency Transistor

Abstract

The invention discloses a method for establishing a radio frequency parameter model of a radio frequency transistor. A device; select the subspace regions located at the 8 apex positions of the space region, respectively build models for the devices corresponding to the 8 subspace regions to extract radio frequency parameters; combine the 8 subspace region radio frequency parameters with the preset physical parameters of the subspace region The size forms an 8-element linear equation group, and the 8-element linear equation group is used as the analytical expression of the radio frequency parameters in the space area; the analytical parameters are obtained by solving the 8-element linear equation group; according to the above steps, the RF transistors of all physical sizes An 8-element linear equation system is established, and then the correspondence between the physical size and the analytical expression of each RF transistor is formed. The invention can improve the precision of the radio frequency parameter model and improve the establishment efficiency of the radio frequency parameter model.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a method for establishing a radio frequency parameter model of a radio frequency transistor. Background technique [0002] With the extensive use of analog and radio frequency circuits in VLSI, the radio frequency characteristics of various semiconductor devices and their SPICE models that affect circuit simulation and radio frequency performance have attracted more and more attention. An accurate SPICE radio frequency model can more truly reflect the actual performance of radio frequency devices, so that circuit designers can use this as a basis to design radio frequency circuits with superior performance. Conversely, once a SPICE model that lacks precision is used for circuit design simulation, it will often fail to achieve the expected design performance and even lead to chip function failure. [0003] At present, most of the methods used in the industry to build radio freq...

AI Technical Summary

Problems solved by technology

Although a variety of advanced algorithms and automatic optimization are used in the fitting process, the fatal flaw of this method is the lack of accuracy because it uses a formula to fit all devices as a whole (Global Fitting). The formulas and parameters can be adjusted properly by virtue of the rich professional experience of the model building engineers, but the perfect fit between the model and the data cannot be achieved very accurately.

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