scholarly journals Millimeter-Wave Single-Layer Dual-Frequency Reflectarray Antenna

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Jinjing Ren ◽  
Wolfgang Menzel

To fulfill the dual-frequency requirements, elements are needed to resonate at two different, independently adjustably frequencies. A low weight, low cost, and easy to fabricate single-layer dual-frequency reflectarray is designed, fabricated, and measured, with gain values of 27 and 29.2 dBi at 20 and 30 GHz, respectively.

2017 ◽  
Vol 16 ◽  
pp. 2106-2109 ◽  
Author(s):  
Ruyuan Deng ◽  
Shenheng Xu ◽  
Fan Yang ◽  
Maokun Li

Author(s):  
Quan Wang ◽  
Zhen Hai Shao ◽  
Zheng Xin Fang ◽  
Sen Feng ◽  
Yu Jian Cheng ◽  
...  

2021 ◽  
Author(s):  
Ángel Palomares-Caballero ◽  
Antonio Alex-Amor ◽  
Juan Valenzuela-Valdés ◽  
Pablo Padilla

A multilayer aperture antenna array in millimeter-wave band is presented in this article. The antenna array is based on glide-symmetric holey gap-waveguide technology combined with E-plane insertion gaps for a low-cost and low-loss design. The radiating part of the antenna array is formed by an array of sixteen aperture antennas, grouped in four sets of 2x2 antenna subarrays in E-plane configuration. The 2x2 subarrays are fed by a one-to-four corporate feeding network in E-plane with holey gap-waveguide technology. The antenna array has been manufactured with high precision stereolithography (SLA) and subsequent metal plating. This design procedure yields a low-cost and low-weight manufacturing process for functional prototypes. The complete array has been manufactured and measured, comparing its performance with the simulation results. Measurements show an input reflection coefficient below -10 dB which ranges from 68 GHz to 74 GHz. The measured radiation patterns suit adequately the defined ones in the design stage. Moreover, gain above 19 dBi in the entire operating frequency band is achieved with a 74.1% mean antenna efficiency. <br>


Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ting Liu ◽  
Lin Zhang ◽  
Jialiang Wu ◽  
Jing Zhao ◽  
Zhiguo Zeng

Abstract A single-layer wideband high efficiency reflectarray in Ku-band has been presented in this paper. A novel dual-resonant patch element approach has been analyzed and optimized to obtain good radiation performances within the operating frequency band. The phase shift range of 573° can be obtained with less steep linear phase shift curve. To compensate the differential spatial phase delays from the feed to the elements, the variable size technique has been utilized for obtaining required phase shifts. The reflectarray aperture has been designed, manufactured and measured. Measured results are in good agreement with the simulated ones. The measured gain of the reflectarray aperture at center frequency can reach 27.2 dBi, which is equivalent to aperture efficiency of 51.3%, and the 1-dB gain bandwidth of the aperture is 18.4%.


2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Bui Van Ha ◽  
Paola Pirinoli ◽  
Riccardo E. Zich ◽  
Marco Mussetta

Reflectarray antennas (RAs) are nowadays a quite popular technology, used in several applications, due to a significant number of attractive properties, such as low cost, low weight, conformal deployment, and the possibility of introducing suitable reconfigurable capabilities. Unfortunately, they present also some intrinsic limitations and drawbacks compared with other solutions and, in particular, a relatively narrow bandwidth; that of course could be enlarged, but generally with a drastic increase of the structure complexity. The objective of this work is the design of a single-layer passive reflectarray, in which the reradiated elements have no conventional shape and enough degrees of freedom to compensate both the spatial and frequency phase variation of the reradiated field. In particular, here we focus on a reradiating element consisting in two concentric square rings in which two different and quite independent geometric parameters are varied.


2021 ◽  
Author(s):  
Ángel Palomares-Caballero ◽  
Antonio Alex-Amor ◽  
Juan Valenzuela-Valdés ◽  
Pablo Padilla

A multilayer aperture antenna array in millimeter-wave band is presented in this article. The antenna array is based on glide-symmetric holey gap-waveguide technology combined with E-plane insertion gaps for a low-cost and low-loss design. The radiating part of the antenna array is formed by an array of sixteen aperture antennas, grouped in four sets of 2x2 antenna subarrays in E-plane configuration. The 2x2 subarrays are fed by a one-to-four corporate feeding network in E-plane with holey gap-waveguide technology. The antenna array has been manufactured with high precision stereolithography (SLA) and subsequent metal plating. This design procedure yields a low-cost and low-weight manufacturing process for functional prototypes. The complete array has been manufactured and measured, comparing its performance with the simulation results. Measurements show an input reflection coefficient below -10 dB which ranges from 68 GHz to 74 GHz. The measured radiation patterns suit adequately the defined ones in the design stage. Moreover, gain above 19 dBi in the entire operating frequency band is achieved with a 74.1% mean antenna efficiency. <br>


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