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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. The reflectarray gives a high gain despite of some leakage...
This paper presents a compact reflectarray element using split ring resonators (SRRs) for small size and high gain reflectarray design. The proposed element is constructed of dual concentric split rings and a metal line on different layers. Several design parameters of the unit cell are studied for obtaining better phase response. The proposed unit cell achieves a good phase response of 700 degrees...
This paper presents a novel high gain rectifying antenna for 8 GHz wireless power transmission. A reflectarray is combined with the rectifying antenna to achieve high gain. An 8times1 rectenna array is also designed as a feed antenna of the reflectarray. The rectenna array has a return loss of 29 dB at 8 GHz. The rectenna array and the reflectarray have a gain of 15.07 dBi and 18.6 dBi, respectively...
This paper presents a reflectarray configuration which supports the operation of six frequency bands. The proposed reflectarray has two substrate layers and each layer accommodates array elements of three frequency bands. Reflection phase curves of the array elements of different frequency bands are simulated. Interactions among elements are also explored.
This paper presents a new configuration for dual-band linearly polarized reflectarray. Simulated phase responses are given in the paper. The radiating elements at two frequency bands are printed at the same layer. No physical contacts between elements will occur as the sizes of the elements are changing. Top layer blocking effects of the dual-layer configuration are also eliminated. The proposed configuration...
A Ku/Ka band dual-frequency offset array-fed microstrip reflectarray antenna using thin membranes has been developed. This antenna is a demonstration model for the next generation titan cloud precipitation radar and altimeter (TCPRA) and is intended to enhance the capability of the future cloud and precipitation remote sensing system for Earth and other planets. The reflectarray has a dimension of...
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