Report "Dielectric Resonator Reflectarray with Two DRA… DRA ground plane with variable slot length dielectric substrate conducting reflector. (a). (b). Fig.1 Unit cell DRA reflectarray with two DRA sizes andThe dielectric layer thickness is 2 mm with εr = 1. Variable slot length ls is used. The reflectarray size was 276 x 276 mm2 with elements spacing of... Planar UWB antenna with multi-slotted ground plane -… The rectangular slots on the top side of the ground plane help to increase the bandwidth. The measured result shows that the proposed antenna16. R. Zaker, C. Ghobadi, and J. Nourinia, Novel modified UWB pla- nar monopole antenna with variable frequency band-notch function, Figure 6... Investigations on Liquid Crystal Recon gurable Unit… Elements with Variable Slots in the Ground Plane. The etching of a slot in the ground plane under the microstrip patch has the effect of inductively loading the patch, since the path of26 2. Microstrip Reflectarrays. Through the slots, a small part of the power can leak and radiate toward the back of...
US6392610B1 - Antenna device for transmitting and/or receiving…
reflectarray simulation - edaboard.com DRA reflectarray is quite challenge, even you got good simulation result, especially when you come to fabrication of the DRA reflectarray, in practical it is very difficult to position all the DRA blocks accurately like what you designed in simulation and the fabricated DRA reflectarray always end up with DRAs position get shifted by 0.5mm-1mm ... layout - Single ground plane vs split planes? - Electrical ... 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. A Broadband Reflectarray Antenna using the Triangular Array ... A Broadband Reflectarray Antenna using the Triangular Array ... thick foam layer backed by the ground plane is ... on the reflectarray surface the length of slots were
An electromechanical beamsteering reflectarray antenna for x-band applications was designed, fabricated, and tested. Circular aperture of antenna consists of 316 elements and each element of the array is comprised of two stacked PCBs. A. SebakReflectarray with variable slots on ground plane. IEE Proc – Microwaves, Antennas Propag, 150 ...
A dual-band single-layer circularly polarized reflectarray ... A dual-band single-layer circularly polarized reflectarray composed by elements with variable rotation angles is presented in this article. Orthogonal dipole elements etched on the substrate are designed to operate at 10 and 13.5 GHz, respectively. A Single Layer Reflectarray Antenna for C/X/Ka Bands Applications A Single Layer Reflectarray Antenna for C/X/Ka Bands Applications Fan Yang†, Yanghyo Kim†, Ang Yu†, John Huang&, Atef Elsherbeni† † Department of Electrical Engineering, The University of Mississippi, Oxford, MS 38677, USA, Comparison of Resonant Elements of Microstrip Reflectarray ...
World Academy of Science, Engineering and Technology
A wideband, single layer reflectarray antenna with... |… The proposed unit cell of the reflectarray antenna comprises a patch loaded with two distinct slots, viz. a square ring and a cross loop, printed on a low loss substrate, which is backed by a foam-loaded ground plane. The unit cell element offers a linear and large dynamic reflection phase range, which is... X Band two layer printed reflectarray with shaped 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...
reflectarray surface either by variable size elements [14], by different element rotations .... slots [46] were used to convert a linearly polarized incident wave to circular ..... The patch and ground plane of reflectarray element can act as biasing ...
Reflectarray antennas. This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188). A modern form of reflective array is the "bow tie" UHF television antenna. Figure 6. S11 parameter of reflectarray antenna with … Double-layer FSS structure is located behind the reflectarray antenna as a ground. A 9×9 elements FSS with variable size patches has same geometry with the reflectarray antenna.A Reflectarray based on the folded SIR patch-slot configuration cacked on FSS for low RCS.
Reflectarray with variable slots on ground plane - IET ... Reflectarray with variable slots on ground plane Abstract: A reflectarray structure based on a planar aperture coupled antenna configuration is presented. The required phase shift at each position on the reflectarray surface is obtained by varying the aperture slot length on the ground plane, which is used to load microstrip patches on the top ... 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 682° 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. 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. A Ku-band reflectarray using variable rings and slots on ...