A low‐profile transmitarray antenna using square patch elements with cross dipole slots and vias

Abstract

A low‐profile transmitarray antenna comprising only a single‐layer substrate and operating at X‐band is presented in this paper. The element consists of two identical metallic layers placed on the upper and lower surfaces of a single‐layer substrate and four vias connecting two metal layers through the substrate. The thickness of the element is 3 mm, corresponding to only 0.1 λ at the design frequency. Metallic layers contain square patches etched with cross dipole slots. By varying the side length of the square patch and adjusting the dimensions of cross dipole slots as well as the locations of the vias, a phase shift of 340° is achieved. A transmitarray using the novel elements is simulated, fabricated, and tested. The simulation and the measurement agree well and the gain at 10 GHz is 25.4 dBi, equivalent to an aperture efficiency of 49%. The low‐profile configuration and satisfactory behavior make this design an appealing candidate for space applications.

Demonstration of a Wideband Multipolarization Transmitarray Antenna for Satellite Communication

“…By combining the advantages of the flat lens and phased array antenna, TA has the characteristics of a simple structure and low processing cost. Based on the traditional PCB technology, there are some relevant TA designs in various frequency bands [8][9][10][11][12][13][14][15][16][17][18]. Numerous applications of the traditional PCB technology TA design in communication are proposed.…”

High efficiency and gain bandwidth transmitarray antenna based on slow wave structure

“…In References 5–11, multi‐layer substrates including dielectric and metal have been used to achieve the full 360° phase correction coverage. In sources 5–11, multilayers including dielectric and metal are used to achieve a complete 360° phase correction coating.…”

“…In Reference 10, a low‐profile transmitarray antenna containing only a single‐layer substrate using square patch elements with cross dipole slots and vias at 10 GHz frequency is designed. The dimension of its unit cell is 0.5 λ 0 × 0.5 λ 0 .…”