Phase Characterization of Reconfigurable Reflectarray Antennas ... dielectric substrate which is backed by a ground plane [2]. ... The effect of variable width slots ... Bi-Function Multi-Beam Graphene Lens Antenna for Terahertz ... Different methods to control the phase of the re-radiated 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] . PIER C Online - Double-Layered Circular Microstrip ... Home > Vol. 50 > pp. 155-164 DOUBLE-LAYERED CIRCULAR MICROSTRIP REFLECTARRAY ELEMENT WITH BROAD PHASE RANGE By W.-H. Ng, E. H. Lim, F.-L. Lo, and K.-H. Tan. Full Article PDF (482 KB)
IEEE Transactions on Instrumentation and Measurement, 2012, vol. 61, no. 5, p. 1486–1493.
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 ...
A foursquare dual polarized moderately wide bandwidth antenna radiating element is provided which, due to its small size and low frequency response, is well suited to array applications.
US5943016A - Tunable microstrip patch antenna and feed network… As shown in FIG. 15, a suitable connector 132 is provided on each of the leads 128 and 130 for connection to RF producing or receiving means, the leads 128 and 130 being insulated or spaced from the ground plane 122, as shown. Radioengineering - December 2012, Volume 21, Number 4 The developed structures are based on two techniques, namely multi-layer stacked structures and E-plane corners. Differ-ent E-plane structures realised with SIW waveguide are presented, thereby demonstrating the potential of the proposed … u Ottawa L'Universite canadieruie Canada's university - PDF The plasma being illuminated by the light changes the slot length, which changes accordingly the phase distribution of the reflectarray elements. patch horn"" MMW X photoinduced Ftftpt^.,._,. plasma ground planes identical slots printed on …
Bi-Function Multi-Beam Graphene Lens Antenna for Terahertz ...
A Reflectarray with Octagonal Unit Cells for 5-G Applications In this paper, five suggested unit cells are presented and compared for the design of a 28-GHz reflectarray antenna that can be used for 5-G mobile base-stations. The unit cells of these...
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 ...
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 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 ...
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. 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 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 A Reflectarray with Octagonal Unit Cells for 5-G ...