**7. Conclusion**

The analysis presented in this chapter has made it possible to modelized the most important characteristic parameters of a directional coupler in CPW (coplanar waveguide) technology, Such as the characteristic impedances for different modes of propagation: odd and even in quasi TEM mode by using the general theory of coupled lines. The directional coupler studied is based on two micro-coplanar lines in which we utilize the integral equation method (solved numerically by using the MOMs) associated with the Green's function, and conformal mapping method to describe the different characteristics of one and two micro-coplanar line.

#### **Acknowledgements**

I must start by thanking my professor Naima Amar Touhami for her encouragement. I also want to thank the author service manager Jasna Bozic for her assistance and all members of IntechOpen.

### **Author details**

Anouar Acheghaf\* and Naima Amar Touhami Faculty of Sciences, Abdel Malek Esaadi University, Tetouan, Morocco

\*Address all correspondence to: anoua.miamo@gmail.com

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*Analysis and Two-Dimensional Modeling of Directional Coupler Based on Two Coplanar Lines DOI: http://dx.doi.org/10.5772/intechopen.95142*
