Reflectarray Antennas A reflectarray is basically either a flat or conformed reflecting surface that consists of an array of reflecting elements which are printed on groundedIt is worth mentioning that the design procedure for reflectarrays with any other variable-size element shape matches that for variable size patch... REFLECTARRAY ANTENNA (1).pptx | Electromagnetic… Various Reflectarray elements. variable size patches. variable length phase delay lines. dipoles.: Geometry of the microstrip reflectarray Fig. or ringsGeometry of Slot in Ground Plane •€r = 4.4 •Substrate height = 1.Single Patch Element Design Fig. Features •Operating frequency-8.Floquet Port... Radioengineering - April 2018, Volume 27, Number 1 [DOI: 10… Carrasco, E., Barba, M., Encinar, J. Reflectarray element based on aperture-coupled patches with slots and lines of variable length. Radioengineering - April 2017, Volume 26, Number 1 [DOI: 10…
Bi-Function Multi-Beam Graphene Lens Antenna for Terahertz ...
US3665480A - Annular slot antenna with stripline feed - Google… Radiation from the annular slot is provided with orthogonal linear polarization: or a continuously variable polarization such as circular or elliptical polarization in accordance with the relative phase and amplitude of electromagnetic … US5714961A - Planar antenna directional in azimuth and/or… A number of probes, coupled to the ring-slot elements, selectively excite a separate resonant mode on each ring-slot element. Microsoft Word - str_0001-0009 A detailed but not exhaustive overview of various recon-A microstrip patch loaded by a slot in the ground plane, figurable reflectarray configurations is discussed in the opportunely integrated with RF MEMs switches, is pro- following …
Slotted Tunable Reflectarray Antenna
Reflectarray with variable slots on ground plane | Request PDF Request PDF on ResearchGate | Reflectarray with variable slots on ground plane | A reflectarray structure based on a planar aperture coupled antenna configuration is presented. The required phase ...
US6285337B1 - Ferroelectric based method and system for…
Reflectarray element using variable ring with slot on ... Abstract: A novel structure using a variable microstrip ring with a slot ring on part of the ground plane is proposed as an auxiliary unit cell in a reflectarray. A progressive phase range larger than 682deg has been achieved by changing the sizes of the microstrip rings and adding slot rings on part of the ground plane. Reflectarray element using variable ring with slot on ... A novel structure using a variable microstrip ring with a slot ring on part of the ground plane is proposed as an auxiliary unit cell in a reflectarray. A progressive phase range larger than 682deg has been achieved by changing the sizes of the microstrip rings and adding slot rings on part of the ground plane. A K-band reflectarray has been fabricated and shows very good performance. US6774851B1 - Antenna with variable phase shift - Google ... The present invention relates to a reflectarray antenna. The reflectarray antenna comprises a dielectric substrate layer disposed on a ground plane. An array of radiating elements such as microstrip patches of similar size are arranged into a regular lattice configuration on the top surface of the substrate layer. A periodic configuration of slots of variable size are provided at the bottom ... Design and Analysis of Microstrip Reflectarray Antenna ...
My question is, where do you draw the line between using a single plane in vs designing the ground planes? I don't; I keep the planes as continuous as possible and almost never use slots - they are bad for a few reasons which I will describe.
Design and Implementation of Reconfigurable Reflectarray ...
Reflectarray Antennas: Analysis and Synthesis Techniques ... Radiation Analysis and Characteristics of Conformal Reflectarray Antennas: Analysis of Design Optimization of Bandwidth and Loss Performance of Reflectarray Antennas Based on Material Properties: Neural Network Characterization of Reflectarray Antennas: Recent Developments of Reflectarray Antennas in Dual-Reflector Configurations (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].