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Release Time:2022-04-11 The UWB we are talking about now is based on the UWB mode defined in IEEE 802.15.4-2015. Current defined 802.15.4z enhances the position and security functions and transmission distance of UWB. The UWB transmit signal bandwidth (-10dB bandwidth) is at least 500MHz, or the signal bandwidth to carrier ratio is bigger than 0.2.
1. Ultra Wideband (UWB)
The UWB we are talking about now is based on the UWB mode defined in IEEE 802.15.4-2015. Current defined 802.15.4z enhances the position and security functions and transmission distance of UWB. The UWB transmit signal bandwidth (-10dB bandwidth) is at least 500MHz, or the signal bandwidth to carrier ratio is bigger than 0.2.
Potential applications of UWB technology include smart home technology, augmented reality, mobile payment, keyless entry into cars and even indoor navigation. More and more applications are being developed.
FiRa as one of the ultra-wideband industry alliances, it defines three use cases seamless access control, location-based services and device-to-device services.
The future trend of wireless positioning technology is to combine indoors and outdoors to achieve precise and seamless positioning. Outdoor positioning is very clear, that is, GNSS technology, such as GPS, BeiDou Navigation, etc. While the indoor positioning technology presents a trend of a hundred schools of thought, including Wi-Fi, Bluetooth, infrared, RFID and Zigbee.
UWB ranks first in terms of indoor positioning accuracy, which can reach within 30cm. The positioning accuracy of other technologies is above 1m, which is far less than UWB. At the same time, UWB is also the highest in terms of safety, positioning range, etc.
2. UWB Channel List
Band Group | Channel Number | Center Freq (MHz) | Bandwidth (MHz) (-3dB BW) | Mandatory/Optional |
0 | 0 | 499.2 | 499.2 | Mandatory below 1GHz |
1 | 1 | 3494.4 | 499.2 | Optional |
2 | 3993.6 | 499.2 | Optional | |
3 | 4492.8 | 499.2 | Mandatory in low band | |
4 | 3993.6 | 1331.2 | Optional | |
2 | 5 | 6489.6 | 499.2 | Optional |
6 | 6988.8 | 499.2 | Optional | |
7 | 6489.6 | 1081.6 | Optional | |
8 | 7488.0 | 499.2 | Optional | |
9 | 7987.2 | 499.2 | Mandatory in high band | |
10 | 8486.4 | 499.2 | Optional | |
11 | 7987.2 | 1331.2 | Optional | |
12 | 8985.6 | 499.2 | Optional | |
13 | 9484.8 | 499.2 | Optional | |
14 | 9984.0 | 499.2 | Optional | |
16 | 9484.8 | 1354.97 | Optional |
3. UWB Test Standards
Country or region | standard test | Certification Require | Frequency Range | Maximum allowable power |
European Union and UK | ETSI EN 302 065 series | CE-RED 和 UKCA | 3.1 GHz to 4.8 GHz 6.0 GHz to 9.0 GHz | -41.3 dBm/MHz |
china | Ministry of industry and information technology No. [2010] 641 Notice on the use of UWB Technology | SRRC | 6.0 GHz to 9.0 GHz | -41 dBm/MHz |
Usa | FCC Part 15 Subpart F | FCC ID | 3.1 GHz to 10.6 GHz | -41.3 dBm/MHz |
Canada | RSS-220 | IC | 4.75 GHz to 10.6 GHz | -41.3 dBm/MHz |
japan | Article 2-1，item 47 | TELEC | 3.4 GHz to 4.8 GHz 7.25 GHz to 10.25 GHz | -41.3 dBm/MHz |
korea | Ministry of Science and ICT Notice No. 2019-105 | KC | 3.735 GHz to 4.8 GHz 7.2 GHz to 10.2 GHz | -41.3 dBm/MHz |
AUSTRALIA | AS/NZS 4268 | RCM | 3.4 GHz to 4.8 GHz 6.0 GHz to 8.4 GHz | -41.3 dBm/MHz |
Remarks: Most other regions refer to European or American standard requirements, and individual regions may have special requirements.
1. Main Test Items
Occupied bandwidth
Maximum average power spectral density
Maximum peak power
Emission spurious
Receive spurious
Receive interference processing
Interference avoidance technology: Monitoring and Avoidance (DAA) and Low Duty Cycle (LDC)
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