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A second-order microwave differentiator

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3 Author(s)
Ching-Wen Hsue ; Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan ; Tun-Ruey Cheng ; Hwan-Mei Chen

A novel approach consisting of discrete signal processing (DSP) technique and optimization method is developed to implement a second-order differentiator at microwave frequencies. To utilize the transfer function of a second-order differentiator developed in the DSP study, we formulate the chain scattering parameters of transmission lines in the Z domain. In particular, it is shown that shunt stubs combining with nonuniform serial lines lead to the realization of a second-order microwave differentiator. Some examples are presented to illustrate the validity of this approach.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:13 ,  Issue: 3 )