ARIA™ Sensing by Cover Sistemi LT103OEM UWB Radar Module Rev.2.1 Data: 27/01/2021 Author: Technical Office POC: info@ariasensing.
LT103OEM UWB Radar Module LT103OEM UWB Radar Module Rev.2.1 1 Summary LT103OEM is a high-precision, compact and lightweight SMT Ultra-Wide Band Radar module for indoor applications. LT103OEM integrates high-end antennas, the signal processing unit and the communication interface. It is designed to comply with EU EN 302 065 (EU), ARIB STD-T91 Ver. 2.0 2015 (Japan), FCC CFR 47 Part 15 (USA), RS220 03/2009 (Canada), KCC (South Korea) UWB Regulations.
LT103OEM UWB Radar Module Table of contents 1 Summary ................................................................................. 1 2 Features .................................................................................. 2 3 Operating principle ..................................................................... 2 4 Electrical specifications ............................................................... 4 5 Radar Diagram ................................................................
LT103OEM UWB Radar Module • The targets reflect part of the incoming energy (echoes) backward to the radar module (Fig. 1b). • The receiver converts the incoming signal to digital data, these data are provided to the MCU and processed according to the application. Fig. 1: The basic principle and the waveforms: a) generated pulse at transmitter (left) and b) generated echoes from targets (right) Pag. 3 of 14 Rev.2.
LT103OEM UWB Radar Module 4 Electrical specifications Operating frequency Min Typ Max 7.3GHz 7.9GHz 8.5GHz Mean e.i.r.p. density -41.3dBm/MHz Peak e.i.r.p. density 0dBm/50MHz Temperature range -40°C +85°C Supply voltage (VddRF) 1.72V 3.3V 3.6V Supply voltage (VddDIG) 1.72V 3.3V 3.6V Supply current (IddRF+IddDIG) 100 mA Range resolution 7 mm VIL 0 0.3 ∙ VddDIG VIH 0.7 ∙ VddDIG VddDIG VOL (IOL=0 mA) 0.
LT103OEM UWB Radar Module 5 Radar Diagram The LT103OEM emitted power is radiated mainly in the radar front side, along the so called downrange direction where the radiated power is at maximum. Fig. 2 Radar refence axes Moving from the downrange direction, the emitted and received power decay. Thus, the same target placed at the same distance but at different azimuth and elevation angles will generate different echo’s amplitudes (and lower when compared to the downrange direction).
LT103OEM UWB Radar Module In Fig. 4, the power (dB scale) is taken over the “vertical” (i.e. over φ=0°cut-plane). The power is normalized to the power received from the same target placed along the downrange direction. Fig. 4 Relative power (dB) over 𝜙 = 0° cut-plane relative to the downrange axis. In the next picture a full representation of the entire volume is reported. The received power is normalized to the power along down-range direction. The ratio is reported in dB. Rev.2.1 Pag.
LT103OEM UWB Radar Module Pag. 7 of 14 Rev.2.
LT103OEM UWB Radar Module 6 Pin-out description The LT103OEM pin-out reference drawing and functionality is described in Fig. 2 and Table 2 respectively. Fig.
LT103OEM UWB Radar Module 17 UART_TX: UART Transmitter Pin 18 Ground 19 VddDIG: Digital Power Supply Voltage (may be shorted to P5) 20 Ground 21 Ground 22 TRX_SYNC: Synchronization Signal (Multi-module) 23 Ground 24 Ground Table 2: LT103OEM pins description 7 Firmware LT103OEM module is provided with a pre-programmed FW, this FW provides: • Direct access to the data processing section: raw data or partially processed data • Moving target detection algorithm • Front-end control and para
LT103OEM UWB Radar Module Bootloader (optional) The module may be provided with a bootloader application. This feature enables the onfield reprogramming of the module but require an additional start-up sequence in order to run the application FW (see protocol documentation). This feature is provided on demand. 8 Typical Schematic The typical schematic for LT103OEM is reported in Fig. 4. Fig. 7 Typical Schematic A LDO may be used instead of DC/DC converter.
LT103OEM UWB Radar Module Fig. 8 Suggested Layout for any board adopting LT103OEM Pag. 11 of 14 Rev.2.
LT103OEM UWB Radar Module 10 Communication Interface The communication to/from the LT103OEM device is performed through a UART interface. The details and specifications of the communication protocol are provided in "LT102 and LT103OEM COM Protocol" document. 11 Drawings Fig. 9: LT103OEM drawings (15mm x 30mm).
LT103OEM UWB Radar Module • If the maximum range is less or equal than 5m, there is no minimum distance to 5GHz WiFi devices • 13 Refer to Paragraph 9. for the layout of the host board. Regulatory Information USA Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules.
LT103OEM UWB Radar Module the host device, otherwise, the host device must be labelled to display the FCC ID of the module, preceded by the words "Contains transmitter module", or the word "Contains", or similar wording expressing the same meaning, as follows: FCC ID: 2AXYT-LT103OEM UWB devices may not be employed for the operation of toys. Operation on-board an aircraft, a ship or a satellite is prohibited. Warning: indoor use only is allowed." 13.
