Mwrf 10670 5g 829068400
Mwrf 10670 5g 829068400
Mwrf 10670 5g 829068400
Mwrf 10670 5g 829068400
Mwrf 10670 5g 829068400

Optical Beamforming Guides 5G Base Stations

April 23, 2019
A hybrid antenna system combines optical and microwave technologies to provide broadband coverage at mmWave frequencies.

As bandwidth is consumed at lower frequencies, the need for higher wireless data rates grows stronger, pushing wireless communications systems into the millimeter-wave (mmWave) frequency range. For wireless infrastructure systems such as base stations operating at mmWave frequencies in 5G wireless systems, antennas become a focal point in order to provide suitable gain, bandwidth, and field of view (FoV). On that front, a research team from The Eindhoven University of Technology (Eindhoven, The Netherlands) has combined technologies such as RF, in the form of a low-noise amplifier (LNA), and a photonic integrated circuit (PIC) to create a broadband mmWave antenna design with an optical beamformer to shrink the size of the feed system. 

The hybrid antenna system shows potential for use in point-to-point backhaul systems, satellite communications (satcom) systems, and microwave and millimeter-wave 5G wireless infrastructure systems. The designers applied the focal-plane-array (FPA) concept to achieve high antenna gain and high effective isotropic radiated power (EIRP) with electronic beamsteering. By using a photonics beamformer, a broadband antenna for use from 20 to 40 GHz can be designed with a fiber-based interface to a central processing unit.

The novel antenna concept offers more than 40 dBi gain across a field of view of ±15 deg. at 28.5 GHz. The optical beamformer generates M beams simultaneously by using M laser diodes with separately tunable emission wavelengths. Optical phase shifters are used to achieve the phase shifts between the antenna elements. The hybrid antenna system is backed by several already-fabricated ICs, for several of the most critical functions in the system.

See “Building 5G Millimeter-Wave Wireless Infrastructure,” IEEE Antennas & Propagation Magazine, April 2019, pp. 53-62.

Sponsored Recommendations

Frequency Modulation Fundamentals

March 14, 2024
The development of crystal-clear FM communications was an innovation of genius and toil. Utilized today in applications such as radar, seismology, telemetry and two-way radios...

44 GHz Programmable Signal Generator

March 14, 2024
The Mini-Circuits SSG-44G-RC is a 0.1 to 44 GHz signal source with an RF output range of -40 to +17 dBm with fine resolution. This model supports CW and pulsed (? 0.5 ?s) outputs...

50W SSPA with Built-In Signal Source & Control

March 14, 2024
The RFS-2G42G5050X+ takes Mini-Circuits robust line of solid state, connectorized, high-power amplifiers for RF energy to a new level by integrating the versatility of a signal...

Webinar: Introduction to OTA Measurement for mmWave and Sub-THz

Feb. 19, 2024
Join Jeanmarc Laurent, a leading expert from MilliBox, for an exclusive live webinar showcasing a complete Over-the-Air (OTA) testing system setup. In this immersive session, ...