Computer Program Calculation for Distortion of Wide-Band Track and Hold Amplifier

Open Access JCC

Figure 5. Comparison of third-order inter cept point.

Figure 6. HD3 characteristics of diode bridge THA.

are illustrated in Figure 6, it shows that they are also

similar and have the agreement between them.

At some special test condition, the calculation time

results of both nonlinear-current method and nodal for-

mulation method are illustrated in Table 1. Obviously,

the calculation times of the nonlinear-current method is

much less than those of nodal formulation method with

the specified input frequency.

6. Conclusion

Nonlinear-current method and nodal formulation method

for distortion calculation of the diode bridge configura-

tion THA are presented by using a simplified high-speed

diode model. Comparative results show that the cal-

culation results derived by the nonlinear-current method

is consistent with thos e of the nodal formulation method,

whereas the overall calculation time of the nonlinear-

current method has been improved.

7. Acknowledgements

This work is supported by the Industry Education and

Table 1. Summary of calculation time.

Frequency (GHz) 1 3 5

Nonlinear-current method (Sec) 12.78 36.42 42.75

Nodal formulation method (Sec) 25.17 72.49 87.73

Research Foundation of PKU-HKUST Shenzhen-Hong-

kong Institution (sgxcyhzjj201204), by the Guangdong

Natural Science Foundation (S2011040001822) and the

Fundamental Research Project of Shenzhen Science and

Technology Foundation JCYC20120618163025041 . This

work is also supported by the National natural Science

Funds of China (61204033, 61204043).

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