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A 60 GHz passive repeater array with quasi-endfire radiation based on metal groove unit-cells

Abstract : This paper describes a linear-polarized reflector that reflects incident wave almost parallel to its surface at 60 GHz, when illuminated by an impinging plane wave with normal incidence. This structure is designed as a simple and low-cost passive repeater with both a quasi-endfire radiation and a flat profile. Working as a transmission relay, it is a quite potential and possible solution to improve the radio-coverage in the T-shaped corridor, which is a typical scenario of non-light-of-sight (NLOS) environment for 60 GHz indoor communications. The proposed repeater consists of an array of parallel grooves with appropriate depths, drilled in a metallic plate. Full-wave simulations and theoretical investigations are carried out to demonstrate the working principle and to optimize the performance. Then, an 80-groove breadboard in the size of 200 mm × 200 mm is fabricated and measured to explore the feasibility of the concept. In a practical measurement, when the distance from the repeater to transmitting antenna (Tx) is 2 m, and to the receiving antenna (Rx) is 1.5 m, the repeater exhibits a main beam at ±75° with gain up to 22.7 dB. The communication between Tx and Rx in NLOS areas is thus successfully recovered
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Submitted on : Monday, June 13, 2016 - 4:49:25 PM
Last modification on : Monday, October 5, 2020 - 9:50:23 AM



Duo Wang, Raphaël Gillard, Renaud Loison. A 60 GHz passive repeater array with quasi-endfire radiation based on metal groove unit-cells. International Journal of Microwave and Wireless Technologies, Cambridge University Press/European Microwave Association 2016, 8 (Special Issue 03), pp.431--436. ⟨10.1017/S1759078716000234⟩. ⟨hal-01331285⟩



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