Future work

The application interface between the commercial EM-simulator and MATLAB is needed. In the optimization procedure presented in Chapter 2, the EM-simulator is used to calculate the response of filters and export the simulated files to MATLAB.

From the simulated response, programs written in MATLAB are applied to extract a coupling matrix and decide how to adjust the filter to achieve a prescribed response.

The EM solver used in this dissertation is a commercial EM simulator. Thus, the application interface (API) between the EM-simulator and MATLAB is needed for the fully automatic tuning. That is to make the MATLAB able to co-simulate with a commercial EM-simulator, an interface is needed.

Although the API is not done yet, the ability of co-simulation is a trend.

MATLAB is very powerful since it includes a lot of functions that can handle numerical operations and draw wonderful graphics. It is easy to develop an algorithm and verify it with MATLAB. On the other hand, it is hard for an individual to develop an EM solver to compete with the commercial EM simulators such as HFSS, IE3D, and Sonnet. Thus, if we can combine MATLAB with a commercial EM simulator, like HFSS, to solve a complicated EM problem, the design procedure would be more systematic and fast.

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簡歷

姓 名 ：廖竟谷

性 別 ： 男

出生年月日 ： 民國 67 年 10 月 16 日

籍 貫 ： 台灣省台中縣

學 歷 ：交通大學電信所碩士班畢業

經 歷 ：高中畢業於台中一中，大學畢業於交通大學電子物理 學系。申請進入交通大學電信研究所電波組研讀，個人在碩博班 期間之研究主題為微波被動元件之設計與製作。為斐陶斐榮譽學 會(PHI TAU PHI)會員。

論文題目 ：

Tuning and Diagnosis of Cross-Coupled Microstrip Filters

Publication List

A. Journal:

[1] Ching-Ku Liao and Chi-Yang Chang, “Design of micorstrip quadruplet filters with source-load coupling”, IEEE Trans. Microwave Theory Tech Vol. 53, pp.

2302-2308, July 2005.

[2] Ching-Ku Liao and Chi-Yang Chang, ”Modified parallel-coupled filter with two independently controllable upper stopband transmission zeros”, IEEE Microwave and Wireless Components Letters, . pp. 841-843, Dec. 2005.

[3] Ching-Ku Liao,Pei-Ling Chi, and Chi-Yang Chang ,”Microstrip Realization of Generalized Chebyshev Filters with Box-Like Coupling Schemes”, IEEE Trans.

Microwave Theory Tech Vol. 53, pp. 147-153 , January 2007.

[4] Chin-Hsuing Chen, Ching-Ku Liao, and Chi-Yang Chang, ”Novel Multifold Finite-Ground-Width CPW Quarter-Wavelength Filters With Attenuation Poles”, IEEE Trans. Microwave Theory Tech Vol. 53, pp. 128-136 , January 2007.

[5] Ching-Ku Liao, Chi-Yang Chang, Jenshan Lin, “A Vector-Fitting Formulation for Parameter Extraction of Lossy Microwave Filters”, IEEE Microwave and Wireless Components Letters, pp. 277-279, April 2007

B: Conference:

[1] Chi-Yang Chang, Ching-Ku Liao, and Dow-Chih Niu, “A 1.5 to 37 GHz ultra-broadband MMIC Mouw’s star mixer”, in 2005 EuMC Digest, pp 987-990, France, Oct. 2005

[2] Ming-Yu Hsieh, Shih-Ming Wang, Ching-Ku Liao, Chin-Hsien Chiang and Chi-Yang Chang, “Microstrip band-pass filters with wide stopband and sharper cutoff response”, in 2005 EuMC Digest, pp 1247-1250, France, Oct. 2005.

[3] Ching-Ku Liao and Chi-Yang Chang, “A Novel Five-Pole Microstrip Cascade Quadruplet Filter”, In 2005 APMC Digest, pp 433-436, SuZhou, Dec. 2005

[4] Ching-Ku Liao, Chi-Yang Chang, Jenshan Lin, “A Reconfigurable Filter Based on Doublet Configuration”, IEEE MTT-S International Microwave Symposium Digest pp. 1607-1610, 2007