MS-RA11M User manual Doc2019_v1.4.
MS-RA1xM Datasheet Contents 1. Product Outline ................................................................................................................................................ 5 2. Features ............................................................................................................................................................ 7 3. Pin Descriptions ..............................................................................................................................
MS-RA1xM Datasheet List of figures Figure 1. Real Chip Size Comparison ............................................................................................................... 6 Figure 2. Blocks and Pin Descriptions ............................................................................................................. 9 Figure 3. Antenna Directionality .....................................................................................................................13 Figure 4.
MS-RA1xM Datasheet List of tables Table 1. Operating Ranges of Three Product Groups.................................................................................... 5 Table 2. Pin Descriptions .................................................................................................................................... 8 Table 3. Electrical Characteristics ...................................................................................................................11 Table 4.
MS-RA1xM Datasheet 1. Product Outline MS-RA1xM radar modules are the motion sensors that detect motion and speed of objects. As Doppler radar sensor modules, they operate in the 24 GHz ISM band. The RA1xM series can be categorized into three product groups—MS-RA11M, MS-RA12M, and MSRA14M—in accordance with a number of their antennas. Table 1 introduces operating ranges of three product groups, which are based on an RCS1 [1m²] (targeting an adult). Table 1.
MS-RA1xM Datasheet MS-RA11M MS-RA14M MS-RA12M 24 mm Figure 1. Real Chip Size Comparison MS- RA1xM Radar Module 6 / 22 Doc2019_v1.4.
MS-RA1xM Datasheet 2. Features A radar module operating in K-Band of 24.05GHz–24.25GHz Motion and speed detection available both for indoor and outdoor use Product groups with various detection ranges between 5 m and 15 m (detection range is based on human motion, and the maximum range may be adjusted using the embedded digital amplifier and gain controller) PCB patch antenna with various operating ranges Small (22 x 18 mm/22 x 22.
MS-RA1xM Datasheet 3. Pin Descriptions Table 2. Pin Descriptions Pin number Pin name Type Description 1 VCC POWER 3.
MS-RA1xM Datasheet Power 24GHz & Patch Filter Antenna (TX) AMP Radar Controller 24GHz MCU & (DSP) Filter Pin1: VCC (3.3V) Pin2: GND) Pin3: PWM or USER I/O Pin4: nReset Pin5: Motion Out Pin6: User I/O 1 Pin7: User I/O 2 Pin8: Velocity Out Patch Pin9: Rx (comm.) Antenna Pin10: Tx (comm.) (RX) Figure 2. Blocks and Pin Descriptions Pin 1: VCC Power noise should be removed as much as possible to ensure normal analog operations of the radar on a 3.3 V operating voltage.
MS-RA1xM Datasheet Pin 6 / Pin 7: I/O1 / I/O 2 Pin 6 and pin 7 are used for general-purpose user I/O interface signals. These pins are connected to the A/D converter, and thus can be used for analog input signal interface. For instance, pin 6 and pin 7 can be used for temperature measurement with a thermistor or other analog devices. Pin 8: Velocity Out A signal is produced if the speed of a detected object falls within the velocity range set by the user.
MS-RA1xM Datasheet 4. Electrical Characteristics Table 3. Electrical Characteristics Parameter Conditions Symbol Min. Typ. Max. Units fc 24.050 24.125 24.250 GHz RADAR Transmit Frequency KR-frequency @ 25°C Tx Tune up Power (Note1) RA11M @ 25°C Pout -1 3 7 dBm RA12M @ 25°C Pout 7 11 15 dBm RA14M @ 25°C Pout 9 13 17 dBm RA11M 5 7 m RA12M 7 10 RA14M 10 15 30 100 SENSOR Detection distance for person working (RCS 1m²) (Note2) Detection speed range 0.
MS-RA1xM Datasheet Table 3. Electrical Characteristics (continued) Parameter Conditions Symbol Min. Typ. Max. Units Start-up time After power on Ts 10 msec Interface signal Digital Signal I/O 3.3 V OPERATION ENVIRONMENT Operation temperature -30 60 °C Storage temperature -40 80 °C NOTES: 1. The Tx output power is a theoretical figure obtained from summing the output of the radar IC and the actual antenna gain of the model. 2.
MS-RA1xM Datasheet 4. Antenna Characteristics The MS-RA1xM radar module has 1T1R PCB patch antennas with a peak gain of approximately 1 dBi to 8 dBi, and each module is comprised of 1 to 4 arrays. A higher number of array components leads to a concentration of antenna energy forward—the detection range increases in front, but decreases in the horizontal/vertical direction.
MS-RA1xM Datasheet Table 4. Antenna Gain and Directionality Model Parameter Horizontal plan Vertical plan RA11M Peak Gain @ 24.15GHz 2.91 dBi 3.47 dBi Beam width @ -3.0 dB 78° 70° Beam width @ -10.0 dB 160° 140° Peak Gain @ 24.15GHz 4.07 dBi 4.07 dBi Beam width @ -3.0 dB 80° 38° Beam width @ -10.0 dB 150° 90° Peak Gain @ 24.15GHz 6.94 dBi 6.74 dBi Beam width @ -3.0 dB 75° 24° Beam width @ -10.0 dB 140° 50° RA12M RA14M NOTES: 1.
MS-RA1xM Datasheet Figure 5. Radiation Pattern of MS-RA11M (Vertical Direction) Figure 6. Radiation Pattern of MS-RA12M (Horizontal Direction) Doc2019_v1.4.
MS-RA1xM Datasheet Figure 7. Radiation Pattern of MS-RA12M (Vertical Direction) Figure 8. Radiation Pattern of MS-RA14M (Horizontal Direction) MS- RA1xM Radar Module 16 / 22 Doc2019_v1.4.
MS-RA1xM Datasheet Figure 9. Radiation Pattern of MS-RA14M (Vertical Direction) NOTES: 1. Antenna radiation patterns may differ from actual operation due to the cable loss during measurement and the mismatching with the measurement system. 2. In the actual module, the backside radiation pattern is limited by the shield can. Doc2019_v1.4.
MS-RA1xM Datasheet 6. Mechanical Outlines Figure 10. MS-RA11M Mechanical Outline Figure 11. MS-RA12M Mechanical Outline MS- RA1xM Radar Module 18 / 22 Doc2019_v1.4.
MS-RA1xM Datasheet Figure 12. MS-RA14M Mechanical Outline Doc2019_v1.4.
MS-RA1xM Datasheet 7. GUI Software MS-RA1xM provides a module evaluation board and GUI software, enabling users to configure the desired functions and easily conduct performance tests. Users can make direct adjustments to radar modules using the GUI software to obtain the desired results. As a result, each module is updated with these user-configured values, and the individual module maintains its expected performance.
MS-RA1xM Datasheet 8. Performance Test Figure 14 shows test result of the detection performance of MS-RA11M. The size of the target object was measured at an RCS of 1 m2. The results may vary with testing environment, and can be increased or decreased by adjusting values such as amplifier gain and control threshold. The results below were obtained at amplifier gain = 1 and control threshold = 8. Radar Figure 14. Detection Performance of MS-RA11M Table 5.
MS-RA1xM Datasheet Model Number Naming Rule MS–RA11M MS: Motion Sensor RA: Radar 1: Modulation type 1) 1: CW with Velocity detection function 2) 2: FMCW with Distance detection function 3) 3: FMCW with Position detection function 1: Antenna type 1) 1: single patch 2) 4: 4 array patch 3) 8: 8 array patch N: Built-in MCU 1) N: external MCU 2) M: built-in MCU MS- RA1xM Radar Module 22 / 22 Doc2019_v1.4.
FCC Statement FCC Part 15.19 Statements This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Part 15.21 statement Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.
