Reconfigurable SIW Antenna for Fixed Frequency Beam Scanning and 5G Applications

Imane Serhsouh,Hamsakutty Vettikalladi,Hassan Lebbar,Mohamed Himdi

doi:10.1109/access.2020.2983001

Abstract

A novel reconfigurable slotted leaky-wave antenna (LWA) based on a substrate integrated waveguide (SIW) with a fixed-frequency beam-steering capability is presented in this paper. For improved compactness, the structure is based on a SIW technology with rectangular slots fed by associated coupling with plated-through holes (PTH).This represents a new feeding method for etched slots in SIW antennas. Each via is loaded with a pin diode on both sides frontend of the waveguide. The pin diodes are tunable by adjusting the DC bias voltage, which results in beam scanning at a fixed frequency of around 27 GHz. Thus an electronically controlled steerable SIW antenna has been designed and experimentally verified that the radiation angle varies from -33° to +33°.

Highlights

With the development of 5G communication, the 24.25–27.5 GHz is one of the most promising bands for 5G deployment. This is because substrate integrated waveguide (SIW) antennas and RF components are very easy to design and integrate at these frequencies due to their compact size
They are suitable for array design for beam-scanning and other beam-forming systems in PCBs, without requiring a complex feeding network [1]–[4]
A fixed-frequency beam-scanning reconfigurable leaky-wave antenna (LWA) based on SIW structure was presented at an operating frequency of around 27 GHz

Summary

INTRODUCTION

With the development of 5G communication, the 24.25–27.5 GHz is one of the most promising bands for 5G deployment. Mobile terminals to automatically detect and connect with 5G base stations Another suggestion, is a linearly polarized 6×6 element transmit-array [11] providing a beam steering range of 100◦ at 24.6 GHz. It’s based on unit-cells providing a continuous electronically reconfigurable phase range of 360◦ by using varactor diodes as tunable elements. A new radiation pattern reconfigurable SIW antenna is presented, which uses pin diodes as binary switches to control the phase shifts and position of. The phase shifts are controlled by altering the switches states, and the beam direction of the SIW antenna can be electronically steered by associating different slot configurations. Measurements and simulations around 27 GHz of both passive and active antenna arrays will be presented and discussed This solution is a promising candidate for 5G communications due to its merits of compact structure and convenient integration with differential integrated circuits.

SLOT FEEDING

CONCLUSION