**Author details**

*Advanced Radio Frequency Antennas for Modern Communication and Medical Systems*

7.6 dBi at f = 6.14 [20, 21]. Radiation diagram:

32.8˚ [22–25].

**Figure 25.** *Farfield gain.*

antenna but this time we have side lobes. With a gain of 6.7 dBi and a directivity of

**Figures 25** and **26** show respectively the far-field gain and far-field directivity in plane E. The opening of the main lobe at -3 dB for the frequency 6.14 GHz is

In the first part of this chapter, the new coplanar antenna with cutouts on a circular patch demonstrate advantages: larger frequency spectrum, a good VSWR, improved parameter S11. The geometry of the patch was calculated and design with CST microwave studio. The antenna was design for UWB application more likely

**90**

**4. Conclusion**

**Figure 26.** *Farfield directivity.* Adnane Latif Cadi Ayyad University, Marrakesh, Morocco

\*Address all correspondence to: a.latif@uca.ac.ma

© 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.
