چكيده به لاتين
Electromagnetic waves have the ability to form, shape and guide. These features make
engineers exploit them by controlling this wave and use them in different ways in different
applications such as data transfer, medical and therapeutic issues, wayfinding, mapping, etc
Nowadays, with the efforts of telecommunication engineers, various methods have been
proposed, such as the use of different types of antennas to shape the radiation wave front or
the use of alternating two-dimensional surfaces to control the boundary conditions for the
shape of the reflection wave front, and there is still an increasing need for progress. The
shaping of the reflected wave front has been known for a long time and in the frequencies
of visible light, flat and convex mirrors and lenses have been used for this purpose, although
optical mirrors with shaping Self-reflected light waves provide the possibility of creating an
Image are well known and much attention has been paid to them, but this phenomenon has
been less studied and paid attention to in microwave frequencies. In this research, we intend
to investigate, design, and simulate a planar microwave convex mirror, which uses the
metasurface structure, which is one of the types of alternating two-dimensional structures to
control the boundary conditions, to create the goal of the project. Finally, in this project, we
have succeeded in designing a flat microwave convex mirror, which in the simulations,
under vertical radiation, has the ability to reflect the wave energy spherically, and according
to the results drawn in this thesis, wave Energy Reflected from the surface of the designed
metasurface are uniformly distributed on a hemisphere and in all angles of this hemisphere
it is less than -10 dB and on average it is -15 dB. These designs were made at frequencies
12, 15, 17, 19 and 21 and simulations were done.
