Reflectarray Antennas: Analysis and Synthesis Techniques ... “A ka-band microstrip reflectarray with elements having variable rotation angles,” IEEE Transactions ... Bi-Function Multi-Beam Graphene Lens Antenna for Terahertz ... wave have been introduced such as using elements with variable sizes, slots with variable lengths on the ground plane, and microstrip reflectarray with elements having variable rotation angles [10]. There are several designs for reflectarray and transmitarray using dipoles, microstrip patches, and dielectric resonator antennas which have Dual Sized Varying Slot Lengths Loading Dielectric Resonator ... A DRA reflectarray with variable slot loading length supported on dielectric substrate with conducting ground plane is constructed as shown in Figure 1. The unit cell consists of rectangular DRA, with length L, width W, height H, a slot in the ground plane, with length L s and width W s, a dielectric layer of thickness h, and a conducting ... (PDF) Phase range improvement of unit cell of reflectarray ...
Microelectromechanical Systems (MEMS) Actuated Wave …
There are a few kinds of phase compensation methods available for the fixed-beam reflectarray such as using open-circuited stubs [5], variable patch size [6], slot-loaded ground plane [7], slot-loaded patch [8] and the usage of electronic components [9]. Reflectarray with slots of varying length on ground plane ... In [15], slots with varying lengths on the ground plane were used to design reflectarray antennas. In [16], slot antennas with microstrip delay lines were used in the design of reflectarray ... (PDF) Phase range improvement of unit cell of reflectarray ... There are a few kinds of phase compensation methods available for the fixed-beam reflectarray such as using open-circuited stubs [5], variable patch size [6], slot-loaded ground plane [7], slot-loaded patch [8] and the usage of electronic components [9]. Slotted Tunable Reflectarray Antenna - core.ac.uk
Electromechanical beamsteering reflectarray antenna for X ...
reflectarrays can be able to generate many combinations of different scan angles and different beam shapes as in phased arrays. On the other hand, the main disadvantage of reflectarrays is their narrow bandwidth. There are two factors that limit the frequency bandwidth. In reflectarrays, resonant type... Varying Slot Lengths Strip Loading Squared Dielectric… a new type of dielectric resonator reflectarray composed of 529 elements covering an area of 276 x 276 cm2 is constructed. The unit cell consists of squared DRA supported on a strip with variable slot length, a dielectric layer and a conducting ground plane. The full phase of 360 degree of the array... Ka-band Dual Mode Circularly Polarized | Ground plane…
International Journal of Antennas and Propagation is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on the design, analysis, and applications of antennas, along with theoretical and practical studies relating the propagation of electromagnetic waves at all relevant frequencies, through space, air, and other media.
A broadband directional antenna comprising a continuous conducting sheet means for forming in said sheet a plurality of elongated slots, the spacing between the centers of the long sides of said slots being in the order of one wavelength at … US4287518A - Cavity-backed, micro-strip dipole antenna array…
Reflectarray Antennas: Analysis and Synthesis Techniques
printed reflectarray with multi cross loop elements of variable loop lengths .... In [ 39], a varactor diode between the microstrip patch and ground plane was ... A novel photonically-controlled reflectarray antenna based on the variation of the slot ... passive and active reconfigurable microstrip reflectarray antennas addition to existing designs for variable-sized reflectarray antennas based on MOM ... The focus in this case is that the slot dimensions can be changed in one ... completely covered with a thin layer of metal (serving as a ground plane) and the ... Fractal reflectarray antennas: state of art and new opportunities This paper reviews existing fractal-based reflectarrays, highlighting their benefits ... A variable length rectangular slot, sliced in the ground plane, is adopted as ...
(PDF) Phase range improvement of unit cell of reflectarray There are a few kinds of phase compensation methods available for the fixed-beam reflectarray such as using open-circuited stubs [5], variable patch size [6], slot-loaded ground plane [7], slot-loaded patch [8] and the usage of electronic components [9]. A Broadband Reflectarray Using Patch With Slot Ring On A Broadband Reflectarray Using Patch With Slot Ring On Ground Plane Elements Fei Xue1, 2, Hongjian Wang1, Min Yi1, and Xingchao Dong1, 2 1CAS Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China 2University of Chinese Academy of Sciences, Beijing, 100049, China ABSTRACT—A broadband center-fed reflectarray … PIER B Online - Design and Analysis of Microstrip PIER B : Progress In Electromagnetics Research B "Analysis and design of a microstrip reflectarray using patches of variable size," IEEE Symposium on Antennas and ... M. R., J. Shaker, M. Cuhaci, and A. Sebak, "Reflectarray with variable slots on ground plane," IEEE Proc. Microwave, Antennas and Propagat., Vol. 150, No. 6, 436-439 ... Reflectarray Antennas: Analysis and Synthesis Techniques