**6. Conclusion**

Having reached the end of this chapter, the objective of which is to propose a PA-Antenna Co-Design block for 5G applications, it is clear that the design of such a *Co-Design Block PA (Power Amplifier)-Antenna for 5G Application at 28 GHz Frequency Band DOI: http://dx.doi.org/10.5772/intechopen.98653*

device requires fairly strict requirements and methodology. Therefore, we looked at the design on the one hand of the antenna and on the other hand of the amplifier by setting 50 ohms as the working impedance guaranteeing the adaptation of the impedance of the device. After design of the two equipment's separately. We therefore proposed and simulated said device. This has characteristics that meet the requirements imposed by 5G technology, which should be noted that the antennas and amplifier proposed in this chapter offer very good characteristics compared to some existing equipment and presented in this chapter. It is also necessary to note the double resonance of our antenna in the 46.06 GHz band and presenting in this one an impedance of 50 ohms and a good bandwidth.
