Ultra-wideband (UWB) Technology

Ultra-wideband (UWB) Technology


Ultra wideband (UWB) Technology is a radio technology. Similar to Bluetooth and Wi-Fi, ultra-wideband (UWB) is a short-range, wireless communication protocol, which operates over radio waves. It is based on the IEEE 802.15.4a and 802.15.4z standards. These standards allow a more exact measure of the Time of Flight (ToF) of a radio signal, most important to centimeter accuracy distance or location measurements.


Ultra-wideband (UWB) is quickly being embraced for micro-location-based IoT solutions. It permits precise and reliable device distance and location measurement, both indoors and outdoors, though consuming very slight power.

How does UWB work?

The devices start ranging when a UWB-enabled device (smartphone, smartwatch, smart key, etc.) near another UWB device. Ranging mentions to calculating the time of flight (ToF) between devices. The UWB positioning process promptly tracks the device’s movements in real-time. By doing this, UWB-enabled devices may know both motion and relative position. For instance, UWB-enabled systems are acquainted with if we’re approaching a locked door and may control if we’re inside or outside the doorway. They can similarly choose whether the lock should be tied up when we reach an exact position. In a practical situation, UWB could open the garage as our car approaches and unlock the door to our house as we near the entryway.


Ultra-wideband is a technology for conveying information from corner to corner at a wide bandwidth (>500 MHz).
This permits for the broadcast of an abundance of signal energy-deprived of interfering with conventional narrowband and carrier wave transmission in the same frequency band.
Monitoring limits in various countries allow for this well-organized use of radio bandwidth.
It allows high-data-rate personal area network (PAN) wireless connectivity.
This also enables longer-range low-data-rate applications, and radar and imaging systems, simultaneous clearly with current communications systems.


Real-time location​

UWB is beneficial for real-time location systems. It is very helpful for its accuracy abilities and low power makes it compatible with radio-frequency-sensitive environments, for example, hospitals. UWB is likewise valuable for a peer-to-peer fine ranging that lets numerous applications founded on the comparative distance between two entities.

Mobile telephony​

First, three phones were launched by Apple launched with ultra-wideband capabilities in September 2019. Apple also launched Series 6 of the Apple Watch in September 2020 that features UWB. Their AirTags containing this technology were publicized on April 20, 2021. The Samsung Galaxy Note 20 Ultra and Galaxy S21 Ultra and S21+ likewise support UWB, alongside the Samsung Galaxy SmartTag+.

Industrial Application (Radar)​

Ultra-wideband increased widespread helpfulness for its application in synthetic aperture radar (SAR) technology. UWB SAR was deeply investigated for its object-diffusion ability due to its high resolution in spite of using lower frequencies.

Ultra-wideband pulse-Doppler radars have also been used to monitor spirited signs of the human body, for example, heart rate and respiration signals in addition to human pace analysis and fall detection. It helps as a possible alternative to incessant-wave radar systems since it includes less power consumption and a high-resolution range profile. Though, its low signal-to-noise ratio has made it helpless to mistakes. A profitable instance of this application is RayBaby. That is a baby monitor that notices breathing and heart rate to control whether a baby is asleep or awake. Ray baby has a detection range of five meters. It may detect fine movements of less than a millimeter.

Ultra-wideband is likewise used in see-through-the-wall exactness radar-imaging technology.

Data Transfer

Ultra-wideband features are compatible with short-range applications, for example, PC peripherals, wireless monitors, camcorders, wireless printing, and file transfers to portable media players.UWB was proposed for use in personal area networks and appeared in the IEEE 802.15.3a draft PAN standard.

IoT use cases

This technology standard would make new IoT use cases in different areas. For example, it will be used in the smart home, safe automobile keyless entry, protected payment processing, and Industry 4.0. UWB fits well into the IoT ecosystem. It’s safe, perfect, and battery-operated. It may be used in several applications in the IoT. Though, it will appropriate in many applications certain up till now to be explored. UWB will first be directing use cases in hands-free right of entry control, location-based services, and peer-to-peer applications. It’s by now one of the radio-frequency (RF) chains inside new smartphones. That is allowing smart card access, safe building access, and smart home device connectivity. People and businesses want to be able to locate and treasure trove pretty much anything in real time, whatever the size.

UWB advantage tagging is much more accurate than previously used Bluetooth or Wi-Fi for IoT and smart home applications. By means of Bluetooth and Wi-Fi, the asset tag could allow us to get to an indirect location. Using UWB, we receive a strict location. For instance, a Bluetooth tag would show that we left our keys inside a room or area in the living room. But UWB would show us that the asset tag or our keys have dropped under the cushion on our couch.

UWB also opens a new world with signs, meaning voice commands may occasionally be secondary to allowing applications. For instance, lights will routinely turn on when we enter a room or our computer would turn on when we sit down at the desk. UWB transports these types of applications to reality hit out off many new and revolutionary use cases. To validate that interoperability is maintained by using UWB, the consortium Fine Ranging (FiRa) is now reforming more than 50 companies from the semiconductor, mobile, infrastructure, and consumer space to actively work on the definition of protocols to assurance interoperability. This will make it possible for developers to use UWB in many new applications, for example, augmented reality, smart home applications, and mobile payments.

Mansoor Ahmed is Chemical Engineer, web developer, a writer currently living in Pakistan. My interests range from technology to web development. I am also interested in programming, writing, and reading.
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