UWB-IR

Study on Low-power Multi-Gbps Ultra-Wideband Impulse Radio at License-free UWB and 60GHz bands

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 Obiettivo del progetto (Objective)

'Ultra-Wideband Impulse Radio (UWB-IR) has an advantage of providing high data-rate with lower power consumption than conventional complex quadrature modulated radios, such as orthogonal frequency modulation (OFDM) with quadrature phase shift keying (QPSK) or 16 quadrature amplitude modulation (QAM). The requirement of large bandwidth is the disadvantage of UWB-IR since license-fee of bandwith requires high cost. But, in 2002, three ultra-wideband frequencies are allocated for license-free applications. From 3.1 to 10.6GHz microwave band called as UWB and 59 to 66GHz millimeter-wave bands are allocated for wireless communication and 22-29GHz pseudo millimeter-wave band is allocated for short-range collision avoidance automobile radar applications. UWB and 60GHz bands are suitable for low-power several Gbps wireless communication. Every day, low-power and high-speed new consumer electronics appliances are appearing in the market such as digital camera, laptop, iPot, etc. These devices need to communicate each other with more than 1 Gbps data-rate where the power consumption of the transceiver is main issue not to reduce the battery life time especially when the communication speed is faster than 1 Gbps data-rate. This research will contain multi-displinary study where we are doing to design radio-frequency integrated circuits, antennas, microwave impulse circuits and customized test structures to study the low-power multi-Gbps UWB-IR. Low-power multi-Gbps UWB-IR at license free bands are going to be investigated for widespread public benefit.'

Introduzione (Teaser)

An EU project studied applications of ultra-wideband impulse radio (UWB-IR). In order to do so, the team first designed and tested various types of necessary hardware, including a new circuit chip and antenna.

Descrizione progetto (Article)

UWB-IR provides a higher data rate yet lower power consumption than conventional alternatives. However, the disadvantage has been a large bandwidth requirement combined with licence fees.

The situation changed in 2002 with the allocation of three frequencies for licence-free UWB applications. The EU-funded UWB-IR (Study on low-power multi-Gbps ultra-wideband impulse radio at license-free UWB and 60GHz bands) project planned to design new equipment to study UWB-IR. The intended developments consisted of radio frequency integrated circuits, antennas, microwave impulse circuits, plus customised test structures. Ultimately, the consortium aimed to study public benefit applications of the new bands, during the four years to October 2014.

During the first year, project researchers began collaboration with the Japanese company Fujitsu concerning complementary metal-oxide semiconductor files. Using design tools obtained through Europractice, the team designed and redesigned the building blocks necessary for the project, specifically a chip.

Second-year work involved further visits to Japan for chip testing. The project disseminated the improved design at a conference. Subsequently, the research moved on to radio frequency integrated circuits for UWB and microstrip antennas. The latter were manufactured at the project's laboratory in Turkey and then tested using a simulation programme.

Researchers also designed a single-element high-gain patch antenna, which included an air gap concept. The antenna was also manufactured and tested, showing a gain improvement.

Throughout the study's latter phases, the project started collaborations with European institutions, which included certain visits. Project output consisted of three peer-reviewed journal articles plus one accepted for publication. The yield furthermore included numerous conference presentations and one master's thesis.

The UWB-IR project studied aspects of particular radio bands, and designed new tools to do so. The new technologies advanced the capacity of the project's host institution to conduct advanced microwave research.