At Decawave we strive for customer satisfaction and so we have written a comprehensive set of application notes to assist our customers in developing their UWB products. The following application notes explain the DW1000 expected performance and capabilities and how to optimise these during design, prototyping, and production
APPLICATION INFORMATION
Describes in detail the concepts of Real Time Location Systems (RTLS) and Wireless Sensor Netorks (WSN).
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APS003 | DW1000 RTLS Introduction | This application note describes various methods of ranging and locating and gives examples | 1.1 | download |
| APS010 | Wireless Sensor Networks and the DW1000 | This application note describes the unique strengths of the DW1000 device and how they can complement and enhance wireless sensor network (WSN) technology. This application note describes different wireless sensor network architectures and how the unique strengths of the DW1000 can complement and enhance WSN technology. | 1.1 | download |
| TB001 | Max Permitted Speed of DW1000 Nodes for Correct Operation | This application note discusses the maximum relative velocity that can exist between two DW1000 based nodes without causing degradation in operation. | 2.0 | download |
| TN006 | Effects of Reflections from Distant Objects |
This application note explains how, due to the specific operation of the DW1000, a reflection can appear in the accumulator which looks like it has occurred before the first path. |
1.1 | download |
UWB TRANSMIT POWER MANAGEMENT
Two comprehensive descriptions on how TX power and SMART Power can be optimised while staying within the regulations.
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APS023 | Transmit Power Calibration & Management | This application note describes in detail how and why calibration should be used to compensate for power loss introduced by the RF path between the DW1000 and the antenna. | 1.3 | download |
| APS023 | Transmit Power Calibration & Management Part II | Outlines the method of compensating the bandwidth and output channel power of the RF signal transmitted by the DW1000 for variations experienced at different temperatures. | 1.3 | download |
RANGE & ACCURACY
This set of documents explains how to maximise range, why you may see issues with range or require more information on diagnostics.
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APH010 | DW1000 Inter Channel Interference | This application note describes how transmissions on different channels could cause interference. | 1.1 | download |
| APS004 | Increasing the Range of DW1000 Using LNA | This Application note discusses how range could be improved using DW1000 based products by the addition of a suitable low noise amplifier (LNA). | 1.6 | download |
| APS006 | Part 1 Channel Effects on Range Accuracy | This application note is concerned with how channel characteristics affect the communications range and ranging accuracy of Decawave’s UWB products. | 1.03 | download |
| APS006 | Part 2 NLOS Operation and Optimizations | This application note is concerned with explaining how Decawave’s UWB products receive and handle signals when obstructions impair the direct path. Furthermore it outlines chip configuration options that can be used by the system implementer to optimize the performance of Decawave’s UWB products in these environments. | 1.5 | download |
| APS006 | Part 3 DW1000 Diagnostics for NLOS Channels | This application note explains in detail how the CIR registers in the DW1000 can be used for improvement of timestamp reliability in NLOS situations using DW1000 diagnostics features. | 1.1 | download |
| APS011 | Sources of Error in Two Way Ranging | This application note explains sources of error in the reported timestamps caused by clock drift or due to range bias and what corrections / mitigation strategies the system designer can employ to report as accurate a result as possible. | 1.1 | download |
| APS013 | The Implementation of Two-Way Ranging with he DW1000 | In this application note, the two-way ranging scheme as used by Decawave’s example application is described. | 2.3 | download |
| APS014 | Antennna Delay Calibration | This application note describes how to calibrate antenna delay of UWB devices | 1.2 | download |
| APS017 | Max Range in DW1000 Systems | This Application note describes the HW design, DW1000 configuration and other considerations to achieve the maximum range from your UWB product. | 1.1 | download |
POWER CONSUMPTION MANAGEMENT
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APS001 | System related aspects of Power Consumption and how to optimize them when using DW1000. | This note examines some of the system-related concepts and tradeoffs that need to be considered to achieve best possible power consumption. | 2.2 | download |
| APS002 | Minimising power consumption in DW1000 systems | This application note discusses how to get most out the DW1000 while minimizing power consumption | 1.1 | download |
| APU001 | Configuring the DW1000 for Datasheet use cases | This application note describes how to apply the power profile configurations showed in the datasheet. | 1.2 | download |
REGULATIONS AND CERTIFICATION
These guides describe the current UWB regulations per country and the certification process in key regions.
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APR001 | UWB Worldwide Regulations | This document sets out the current situation regarding the use of UWB in all the principal geographies in the world. | 1.3 | download |
| APR002 | Certification Guide USA | This document outlines the concept of certification and the certification process for UWB based products with the FCC. | 1.2 | download |
| APR003 | Certification Guide Europe | This document provides an overview of that portion of the certification process related to UWB under European regulations (ETSI) | 1.2 | download |
| APS009 | Operating the DW1000 under LAES regulations. | This application note describes how an external PA can be used while staying within LAES regulation. | 1.4 | download |
UWB HARDWARE DESIGN, PROTOTYPING & PRODUCTION
These documents will help hardware and PCB designers by giving guidance about best PCB design practices.
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APH001 | DW1000 HW Design Guide | This application note gives in great detail recommedations on all aspects of RF PCB design. This application note is also very usefull for trouble shooting your HW design. | 1.1 | download |
| APH005 | Selecting the Power Source for your DW1000 Based Product | This application note is intended to help you to make the right choice of power source and associated circuitry for a number of typical DW1000 applications. | 1.2 | download |
| APH006 | PCB Layout Using .dxf Files | This note includes three files in DXF format which can be imported in most PCB layout EDA tools and used as an overlay to replicate the DW1000 section of Decawave’s EVB1000 evaluation boards. | 1.1 | download |
| APH007 | Antenna Selection/Design Guide for DW1000 | This application note is a guide to select or design of the most appropriate antenna for your DW1000-based product. | 1.0 | download |
| APS012 | DW1000 Production Tests | This document is a guide for the production testing of DW1000-based products. | 1.7 | download |
UWB SYSTEMS
These documents guide software developers on debugging and scaling DW1000-based RTLS systems.
| Number | Title | Description | Revision | Download |
|---|---|---|---|---|
| APS007 | Wired Sync RTLS With The DW1000 | This note describes how to synchronize anchor nodes in a TDOA RTLS system by using wired synchronization techniques. | 1.10 | download |
| APS016 | Moving from TREK1000 to a product | TThis document gives an overview of the steps involved in developing a commercial RTLS product starting from Decawave’s TREK1000 Two-Way-Ranging (TWR) RTLS IC Evaluation Kit. | 2.3 | download |
| APS019 | Driving DW1000 from 8-bit MCU | This application notes describes the resolution of issues you might run into when porting to a 8-Bit Microprocessor. | 1.1 | download |
| APS022 | Debugging DW1000 Based Products and Systems | This Appllication note describes the steps to follow when debugging your DW1000 based HW design | 1.3 | download |