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Revolutionizing Manufacturing Using Cognitive IoT Technologies
Published in Pethuru Raj, Anupama C. Raman, Harihara Subramanian, Cognitive Internet of Things, 2022
Pethuru Raj, Anupama C. Raman, Harihara Subramanian
Ultra-Wide Band (UWB) is a technology which is used for communication amongst low range and low power sensors and mobile devices which require very low power and high bandwidth. UWB has a lot of features which make it suitable for IoT communication, they are:Possibility of high accuracy transmission even indoors.Resistance to multipath fading.Good scalability in dense deployment.Low power consumption.High bandwidth transmission.UWB acts as a complementing technology to other existing wireless radio technologies like Wi-Fi and WiMAX. UWB provides very cost-effective, power-efficient, and high bandwidth solution for data communication amongst devices which are within 10 metres or 30 feet.
UWB-MIMO Antenna with Band-Notched Characteristic
Published in Praveen Kumar Malik, Planar Antennas, 2021
Chandrasekhar Rao Jetti, Venkateswara Rao Nandanavanam
Higher data rates and improved quality of service are the primary concerns of future wireless communication systems like 4G and 5G. Since the Federal Communications Commission (FCC) allocated the unlicensed frequency spectrum from 3.1–10.6 GHz for commercial applications in 2002 [1], ultra-wideband (UWB) technology has attained considerable attention because of its inherent features like high data rate communications, extremely less power consumption, and low cost. However, multipath fading and frequency interference with other communication systems are the important problems that should be well solved for UWB systems. In an indoor communication application, like other wireless communication systems, the UWB system performance is also restricted by multipath fading due to rich scattering environments which cause inter-symbol interference. In present times, digital communication using multiple input multiple output (MIMO) technology has emerged as a breakthrough for a wireless system. The MIMO system employs multiple antennas at the transmitter and receiver. It makes use of the rich multipath environment to mitigate the multipath fading effect. And it improves the range of communication and system capacity (data rate) without the need for additional bandwidth or transmitted signal power [2,3]. Hence, the UWB system with MIMO technology is a viable solution to reduce the multipath fading effect and to improve the quality of service, the range of communication, and system capacity [4].
Internet of Things-Compliant Platforms for Inter-Networking Metamaterials
Published in Christos Liaskos, The Internet of Materials, 2020
Ultra-WideBand (UWB) is a wireless technology that uses less power and provides higher speed than Wi-Fi and first-generation Bluetooth products. Governed by the WiMedia Alliance, UWB is geared for home theater video, auto safety and navigation, medical imaging and security surveillance. Pulse radio unlike other radio transmissions, UWB does not use a continuous carrier frequency. It transmits extremely short pulses, and the durations between pulses use no power. One method transmits the pulses in continuously varying time slots based on a pseudo-random number sequence like CDMA. The other divides the spectrum into smaller frequency bands that can be added and dropped as necessary. UWB sees through walls because UWB can transmit through materials that would bounce other radio signals; it is also used to pinpoint objects behind barriers or buried underground. First invented by Gerald Ross at Sperry Rand Corporation in the late 1960s, UWB has been used by the military for various radar systems.
Design of a compact elliptical slot printed UWB antenna with band-notched characteristic
Published in International Journal of Electronics Letters, 2019
K. Jagadeesh Babu, B. Kiran Kumar, Subba Rao Boddu, A. M. Varaprasad
The present advanced wireless communication systems are required to operate at high transmission rate with low power consumption capabilities. Nowadays, UWB (ultra wideband) technology has paid more attention for many advantages such as multipath cancellation, higher data rates, communication security and low power consumption (Fontana, 2004). One of the major issues in the development of an UWB communication system is the design of compact antennas with wideband characteristics. Due to the ease of fabrication, planar-like structure, smaller size and low cost, usually printed monopole antennas are preferred for UWB systems. Different types of UWB antennas with various geometries and design considerations are discussed in Ali, Zaki and Abdou (2016), Boutejdar and Abd Ellatif (2016), Lin, Cai, Huang and Wang (2011) and Reddy, Mishra, Kharche and Mukherjee (2012).
A novel ultra-wide band wearable antenna under different bending conditions for electronic-textile applications
Published in The Journal of The Textile Institute, 2021
Mariam El Gharbi, Marc Martinez-Estrada, Raul Fernández-García, Saida Ahyoud, Ignacio Gil
The introduction of Ultra-wideband (UWB) by the Federal Communications Commission (FCC) in 2002 approved the commercial use of the frequency band from 3.1 to 10.6 GHz for Ultra-wideband (UWB) systems (Aiello & Rogerson, 2003), which attracts research interests for implementing UWB antennas for wireless applications. UWB offers low power operation and extremely low radiated power, thus being very attractive for body-worn battery-operated devices (Klemm & Troester, 2006). UWB antennas are suitable to cover mobile and wireless services and to reduce the system complexity by reduction of the overall device dimensions, and costs (Gogikar & Chilukuri, 2019).
Multi notch-band CPW-fed circular-disk UWB antenna using underground filter
Published in International Journal of Electronics Letters, 2018
Zahra Mansouri, Ferdows B. Zarrabi, Afsaneh Saee Arezoomand
High capacity and high-speed communication systems are beginning to become a reality by providing transmission rates in the order of ~1 GB/s using ultra-wideband (UWB) technology, defined between 3.1 and 10.6 GHz (Luo, Hong, & Zhong, 2015; Zhang & Niu, 2014). This technology is becoming attractive especially for home and office networking systems as the transmission power is limited to −41.3 dBm/MHz. UWB systems are also economic as they benefit from a less complex front-end architecture. Hence, such systems are finding application in biomedical systems for medical imaging and cancer detection (Zarrabi, Mansouri, Gandji, & Kuhestani, 2016).