Photonic Architecture for Beam Forming of RF Phased Array Antenna

Abstract

System architecture utilizing photonic technology for beam forming of RF phased array antenna is studied. RSOA solution for uplink signal transmission and multi-core fiber approach for two dimensional phased array antenna are demonstrated.

Photonic phase control of microwave signal by a combination of two intensity-modulated lightwaves using a Mach-Zehnder optical switch

“…Unlike the optical phase, since the optical power ratio is basically independent of the optical path length, it is expected that the RF phase is less sensitive to the environmental temperature. Although the RF phase can be controlled by wavelength tuning of the source laser, as has been reported [25,26,27], our method has the advantage of achieving both fast and continuous phase control of the RF signal by a single MZ-SW. In Fig.…”

All‐fibre phase shifter based on tapered fibre coated with MoWS 2 ‐rGO

“…The supporting pillars of 5G are the generation of a mmW carrier using microwave-photonic techniques [6,7], optical signal processing [8], a flexible optical transport layer [9], multiple-input, multiple output (MIMO) [10] and a beam forming antenna [11]. MIMO and beam forming have an important role in adaptive resource use to facilitate more efficient spectrum management and optimised power consumption [11,12]. Serafino et al proposed a photonics-assisted beam forming network in which the optical phase shifter in the beam forming network was accomplished using a microring resonator loaded Mach-Zehnder interferometer structure [11].…”

A novel centralized beamforming scheme for radio-over-fiber systems with fixed wavelength allocation

“…A beamforming method for RoF systems that uses time delays caused by chromatic dispersion is reported in [3,4]. This conventional method controls the beam direction by controlling wavelength allocation.…”