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

Published online by Cambridge University Press:  03 March 2016

Duo Wang ,
Raphaël Gillard  and
Renaud Loison
Duo Wang*
Affiliation:
European University of Brittany, Institute of Electronics and Telecommunications of Rennes, INSA, UMR CNRS 6164, 35708 Rennes, France
Raphaël Gillard
Affiliation:
European University of Brittany, Institute of Electronics and Telecommunications of Rennes, INSA, UMR CNRS 6164, 35708 Rennes, France
Renaud Loison
Affiliation:
European University of Brittany, Institute of Electronics and Telecommunications of Rennes, INSA, UMR CNRS 6164, 35708 Rennes, France
*
Corresponding author: D. Wang Email: [email protected]
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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.

Keywords

Antennas and propagation for wireless systemsApplications and Standards (Mobile, Wireless, networks)
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 431 - 436
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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