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 ... 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 ...
using variable sizes of the patch, adding stubs of variable lengths and use of variable size slots on the ground plane. Further, techniques for circular polarization ...
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 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.
The predicted shape is being represented here by a dummy variable “S” where S .... An SMA connector with a 6.8 mm long pin (1 mm for ground plane, 5.1 mm for air-gap, .... Pirinoli P. Neural network characterization of reflectarray antennas.
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 ...
US4684952A - Microstrip reflectarray for satellite…
A unit cell composed of a microstrip ring and a slot on the ground plane is presented. The phase response range of the unit cell at 18 GHz is over 440° with a smooth phase variation. A Ku band reflectarray is designed and measured at 18 GHz to verify its performance. The maximum gain and half-power beam width is 31.7 dB and 4.7°, respectively. Reflectarray Element Based on Aperture-Coupled Patches ... Abstract: A phase-shifter element for printed reflectarrays with more than 4 cycles of phase delay is presented in this work. The proposed reflectarray element allows very linear phase curves and is based on the combination of two previously studied and demonstrated concepts: variable length slots on a ground plane and patches coupled through a slot to variable length lines. Design and Implementation of Reconfigurable Reflectarray ... Various reflectarray element designs were considered which included variable size patches, patch with variable length slot, patch with fixed slot fed by variable length stripline. After careful study and systematic evaluation, it was decided that the element – patch with variable length slot in the ground plane was best suited 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 ...
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 ...
Reflectarray with variable slots on ground plane. M.R. Chaharmir, J. Shaker, M. Cuhaci and A. Sebak. Abstract: A reflectarray structure based on a planar ... Reflectarray antennas: A review - FERMAT and parabolic reflectors, reflectarray antennas have attracted great attention in ..... fixed-sized rectangular slot in a ground plane and a variable length delay line ... Reflectarray Antennas: Analysis and Synthesis Techniques - Hindawi Sep 2, 2012 ... Printed reflectarrays consist of an array of microstrip elements .... “Reflectarray with variable slots on ground plane,” IEE Proceedings, vol. 150 ...
Slot elements for tunable frequency with variable radius of slots is due to the. Malaysian Technical Universities International Conference on Engineering & Technology (MUiCET 2011).[8] M. R. Chahinir, J. Shaker, M. Cuhai and A. Sebalc, "Reflectarray With Vaiiable Slots on Ground Plane", IEE Proc.-Microwaves... World Academy of Science, Engineering and Technology Moreover different slot embedded patch element configurations have been proposed for LC based tunable reflectarray antenna design with enhanced[6] M. R. Chahmir, J. Shaker, M. Cuhai, and A. Sebak, "Reflectarray with Variable Slots on Ground Plane”, IEE Proc.-Microwaves, Antennas and... Reflective array antenna - Wikipedia 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 …