A planar Van Atta array reflector with retrodirectivity in both E-plane and H-plane

Tseng, Wen-Jen; Chung, Shyh-Bong; Chang, Kai

doi:10.1109/8.833066

Cited by 42 publications

(1 citation statement)

References 7 publications

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“…Generally, retrodirective arrays can be synthesized with basic radiating elements such as dipoles [31]. In addition, they can be designed using patch antennas [36][37][38]. However, due to the high-backscattering from the structure (consisting of antenna arrays), it degrades the performance of the retrodirective reflector by destructively interfering with the desired reradiated fields.…”

Section: Van Atta Retrodirective Reflectorsmentioning

confidence: 99%

Metasurfaces for Reconfiguration of Multi-Polarization Antennas and Van Atta Reflector Arrays

et al. 2020

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This paper discusses the application of metasurfaces for three different classes of antennas: reconfiguration of surface-wave antenna arrays, realization of high-gain polarization-reconfigurable leaky-wave antennas (LWAs), and performance enhancement of van Atta retrodirective reflectors. The proposed surface-wave antenna is designed by embedding four square ring elements within a metasurface, which improves matching and enhances the gain when compared to conventional square-ring arrays. The design for linear polarization comprises of a 1 × 4 arrangement of ring elements, with a 0.56λ spacing, placed amidst periodic patches. A 2 × 2 arrangement of ring elements is utilized for reconfiguration from linear to circular polarization, where a similar peak gain with better port isolation is realized. A prototype of the 2 × 2 array is fabricated and measured; a good agreement is observed between simulations and measurements. In addition, the concepts of the design of polarization-diverse holographic metasurface LWAs that form a pencil beam in the desired direction with a reconfigurable polarization are discussed. Moreover, recent developments incorporating polarization-reconfigurability in metasurface LWAs are briefly reviewed. In the end, the theory of van Atta arrays is outlined and their monostatic RCS is reviewed. A conventional retrodirective array is designed using aperture-coupled patch antennas with a microstrip-line feeding network, where the scattering from the structure itself degrades the performance of the reflector. This is followed by the integration of judiciously synthesized metasurfaces to reconfigure and improve the performance of retrodirective reflectarrays by removing the above-mentioned undesired scattering from the structure.

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Section: Van Atta Retrodirective Reflectorsmentioning

confidence: 99%

Metasurfaces for Reconfiguration of Multi-Polarization Antennas and Van Atta Reflector Arrays

et al. 2020

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Van Atta Array Reflector

Chung

2005

Encyclopedia of RF and Microwave Engineering

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The Van Atta array reflector has the simplest structure for retrodirective arrays, which has found many applications in wireless communications, RF identification (RFID), and intelligent transportation systems (ITSs). The antennas of the Van Atta array are paired and connected by transmission lines with equal length or length differences equal to multiples of a guided wavelength. No active device is required in the basic type; thus this array is much simpler than other kinds of retrodirective arrays. In this literature, the operation principle and a brief development history of the Van Atta array are first described. The theoretical analysis to predict the scattering field pattern in both monostatic and bistatic cases and experimental results of the Van Atta array reflectors is depicted in detail in Section 2. In Section 3, several design examples including one‐dimensional and two‐dimensional Van Atta reflector arrays are introduced. The design concept and operational performance of different kinds of Van Atta arrays are given. Besides passive ones, various active Van Atta reflector arrays are also depicted in this section. Section 4 briefly discusses the applications of the Van Atta arrays, especially in the field of vehicle‐mounting reflectors associated with the ITS. A detailed description of using the Van Atta reflector to enhance the radar cross section (RCS) in vehicle collision warning radar systems and to compose a transponder in the electronic toll collection (ETC) system is conducted. Two examples of transponders using the Van Atta array are introduced in this section. Finally, Section 5 gives a brief summary of the study.

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Reflectarrays and Retrodirective Arrays

Hansen

2009

Phased Array Antennas

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A planar Van Atta array reflector with retrodirectivity in both E-plane and H-plane

Cited by 42 publications

References 7 publications

Metasurfaces for Reconfiguration of Multi-Polarization Antennas and Van Atta Reflector Arrays

Metasurfaces for Reconfiguration of Multi-Polarization Antennas and Van Atta Reflector Arrays

Van Atta Array Reflector

Reflectarrays and Retrodirective Arrays

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