Reflectarray antennas provide beam steering without the need of complex and lossy feed networks chapter 1 discusses the basic theory of reflectarray and its design a brief summary of previous work and current research status is also presented the inherent advantages and drawbacks of the reflectarray are discussed. Dynamic tunability enhancement of reflectarray antenna using non-homogeneous dielectric materials muhammad hashim dahri a thesis submitted in fulfillment of the requirement for the award of the degree of master of electrical engineering faculty of electrical and electronics. State of the art in resonant, leaky-wave and reflectarray antennas, providing a the promising future of graphene-based thz antennas index terms—terahertz, graphene, dipoles, leaky-wave antennas, reflectarrays, reconfigurability, non- reciprocity calculated using straightforward transmission line theory to further. Introduction of reflectarray antennas ❖ reflectarray 15, 1990 3 d m pozar and t a metzler, “analysis of a reflectarray antenna using microstrip microwave holography measured aperture fields for accurate simulations planar and conformal systems ▫ radiation analysis array theory aperture field full-wave. Antenna can be focused to any desired direction the integration of the phase control mechanism in the elementary cell is the main challenge that needs to be solved and studied this consists of understand- ing the theory of the reflectarray, designing the reconfigurable elementary cell with optimum performance and cost.
Tahseen, muhammad m (2017) analysis and design of reflectarray antennas for bandwidth enhancement, feed matching, and portability phd thesis, concordia university. He received the bs degree in electronics and electrical engineering from aalto university (former tkk helsinki university of technology), espoo, finland, in 2011, where he is working on his master's thesis related to reflectarray antenna element characterization in near-field region while performing his bs studies,. Even though the theory of reflectarray is not new, the fast development in microstrip antenna technology has escort to the development of an innovative flat reflector antenna ie microstrip reflectarray antenna microstrip or printed reflectarray has several advantages over conventional reflectarray, especially for the space.
Figure (3) parabolic reflector antenna geometry 3- mechanisms of microstrip reflectarray the design and analysis of the reflectarray can be achieved through conventional array theory for arbitrarily located feed when many microstrip antenna elements with different lengths are arranged in rectangular planar aperture. Reflectarray antennas 1 12 microstrip reflectarrays 2 13 electronically tunable microstrip reflectarrays 3 14 computational electromagnetics and microstrip reflectarrays 6 15 scale changing technique 8 16 objectives and contributions 9 17 structure of the thesis 10 section i equivalent electrical circuit.
A possible solution for this problem is planar printed antennas, which are thin and lightweight, and can be fabricated easily 12 organization of the thesis chapter 2 of this thesis addresses the planar reflectarray concept it first compares the parabolic reflector antenna and the planar reflectarray and then introduces the. Reflector and lens antennas, printed antennas, microstrip antennas wireless energy harvesting and power transfer adaptive beamforming, smart antennas, doa estimation education 2012 phd electrical engineering thesis: “ advanced design methodologies and novel applications of reflectarray antennas.
Approval of the thesis: dual frequency reconfigurable reflectarray antenna of split ring elements with rf mems switches submitted by caner güçlü in partial fulfillment of the requirements for the degree of master of science in electrical and electronics engineering. This thesis focuses on a type of antenna known as the reflectarray antenna in particular, it looks at the design of an active reconfigurable reflectarray antenna, which has not received much attention in the reflectarray community potential applications include deployment as a high gain, reconfigurable antenna for. Design of reflectarray antenna integrated with fss textured configurations for wireless communication applications arslan kiyani a thesis submitted in fulfillment of the requirement for the award of the degree of master of electrical engineering faculty of electrical and.