Technology for D-band/G-band Ultra Capacity Layer

The bands above 100 GHz offer outstanding potentiality for fixed wireless communications, matching the capacity requirements of future mobile networks backhaul in dense urban scenarios. However, millimeter wave components need a substantial technology advancement to enable such application. Fabrication challenges due to the short wavelength affecting the dimensions of the components, and the decrease of transmission power at the increase of the frequency are among the obstacles that limit the availability of working wireless systems above 100 GHz. The Horizon 2020 project ULTRAWAVE is progressing in the enabling of the first ultracapacity layer for small cell backhaul by producing a network with Point to Multipoint sectors at D-band (141 -148.5 GHz) fed by Point to Point G-band (275 - 305 GHz) links. The paper will describe the system specifications of the proposed ultracapacity layer and the millimeter wave technology in development in the ULTRAWAVE project

Design and fabrication of a D-band traveling wave tube for millimeter wave communications

The design and fabrication aspects of a novel D-band (141 GHz-148.5 GHz) Traveling Wave Tube (TWT) for enabling the first point to multipoint front end at D-band, objective of European Commission H2020 ULTRAWAVE is presented. The ULTRAWAVE system will provide unprecedented wireless area capacity over wide area sectors, with radius up to 500 - 600 m for the future 5G high density small cell deployment. The design and fabrication processes adopted for the TWT are focused to find new low cost solutions for TWTs at millimetre waves to satisfy the requirements of the wireless market. The proposed TWT will provide more than 10 W saturated output power for achieving more than 100 Gb/s/km2 of area capacity over 600 meters radius wide angle sector, with 99.99% availability in ITU zone K

Toward the first D-band Point to multipoint wireless system field test

The European Commission Horizon 2020 ULTRAWAVE “Ultra capacity wireless layer beyond 100 GHz based on millimeter waves” is in the final stage of development. The first ever field test of a D-band point to multipoint wireless system will be performed in a real environment. The ULTRAWAVE wireless system comprises a D-band Transmission Hub to produce a 30 degree sector with 600 m radius with multi gigabit per second data rate and a number of compact D-band terminals. The terminals will be distributed at different distances from the transmission hub to recreate real deployment condition. The paper describes the latest update on the development of the ULTRAWAVE systems and the field test set up

D-band point to multi-point deployment with G-band transport

The first Point to MultiPoint wireless system at D-band has been designed and is in advanced development. The European Commission H2020 ULTRAWAVE "Ultra capacity wireless layer beyond 100 GHz based on millimeter wave Traveling Wave Tubes"project aims to respond to the demand of high capacity at level of tens of Gigabit per second, in urban areas, where fiber backhaul is not economically viable and high density small cell architectures are deployed. A transmission hub powered by a novel D-band TWTs will feed a number of terminals arbitrarily allocated in the corresponding area sector. This paper illustrates the main characteristics, advantages and networking aspects and provide a summary of the latest results of the ULTRAWAVE project