Nisshinbo Micro Devices NJR4274 24GHz Sensor Module User Manual

June 4, 2024
Nisshinbo Micro Devices

Nisshinbo Micro Devices NJR4274 24GHz Sensor Module

Copyright ©
Nisshinbo Micro Devices Inc.
Microwave Business Headquarters

-Notice of Proprietary Information-
This document and contents are proprietary to Nisshinbo Micro Devices Inc.
This publication and contents may not be reproduced or distributed for any other purpose without the written permission of Nisshinbo Micro Devices Inc.
Specifications listed in this document are subject to change at any time, without notice.


Nisshinbo Micro Devices Inc.
Microwave Business Headquarters

| Title:
Specifications of NJR4274 for Radio Certification
Reference No.:
PDS-R4274| Rev.:
00-06E| Sheet:
1 / 14

Scop

NJR4274 K-band (24GHz) Doppler Module has been designed for motion sensing applications.

Main Structure

  • Integrated antenna structure, the patch antenna is integrated on the module PCB.
  • All of electric parts except interface connector are covered with metal cap.

Operation Overview

  • 5 V input operation, LDO integrated.
  • Implemented an internal MCU for RF frequency tuning of RF-IC and intermittent-operation.
  • Internal MCU controls ON/OFF of Output voltage from LDO which connect to the input voltage terminal of RF IC.
  • This module is 2-frequencies CW (FSK) type sensor that can simultaneously measure the distance and velocity of the moving target. It operates duty cycle of intermittent-operation has 2-operationmode (Normal operation mode / Low power operation mode). 2-operation-mode are different duty cycle. (refer Fig.2)
  • RF frequency is output during ON time.
  • Internal MCU supplies the tuning voltage to RFIC and the RF frequency is controlled by tuning voltage.
  • Since the RF frequency is switched every intermittent-operation cycle, the tuning voltage is switched every cycle.
  • Switched RF frequency is 2-frequencies, and difference of those 2 frequencies is 15 MHz +/- 3 MHz.

Electrical Specifications

ITEM

| MIN| TYP| MAX| UNITS|

REMARKS

---|---|---|---|---|---
1.1. Power Supply
(1) Operating Voltage|

4.75

| 5| 5.25|

V

|
(2) Operating Current
Normal Operation Mode|

| ―| 50|

mA

|
Low Power Mode|

| ―| 6|

mA

|
1.2. RF Parameter
(1) RF Frequency (Transmission)
for US, Canada, Taiwan and Korea|

24.05

| ―| 24.25| GHz|

Refer Chart 1.

(2) Transmission Operation Mode|

2-Frequencies CW (FSK)

|
(3) Frequency Difference of FSK|

| 15| ―|

MHz

|
(4) Output Power|

| 1.8| ―|

dBm

|
(5) E.I.R.P.|

| ―| 10 (10)|

mW (dBm)

|
(7) Spurious Emission|

| ―| 2,500|

uW/m

|
(8) Antenna.
(8) Antenna. Antenna Gain|

| 6.5| 6.7|

dBi

|
-3dB beam width / Horizontal|

| 45| ―|

Deg.

|
-3dB beam width / Vertical|

| 40| ―|

Deg.

|

Chart 1. Frequency Channel List

  • Normal Operation Mode

    Notes: In normal mode, the modules transmit alternately at frequencies F1 and F2.
    A period of F1 and F2 has each 500us. Both transmit ON-time is 47us,
    OFF-times is 453us. F2 is started to transmit delayed 250us
    after F1 transmit

  • Low Power Operation Mode

    Notes: In Low Power Operation mode, the modules transmit alternately at frequencies F1 and F2.
    A period of F1 and F2 has each 10ms nominal, range 9 to 11ms.
    Both transmit ON-time is 47us, F2 is started to transmit delayed 250us after F1 transmit.

Fig.2 Frequency Time Chart

Environmental Specifications

ITEM SPECIFICATION
Operation Temperature -10 to +41 °C
Storage Temperature -30 to +70 °C
Humidity 0 to 64 % @+41 °C

Drawing

Outline

Interface

(1) Connector: BM07B-GHS-TBT / J. S. T. MFG. CO., LTD.
(2) Pin Assignment

| NAME| I/O| DESCRIPTION

---|---|---|---
1| Vcc| I| +5 V Input
2| TxD| O| Serial Communication
Tx Port
3| RxD| I| Serial Communication
Rx Port
4| GND| ―| GND
5| TxD| O| Serial Communication
Internal AD value is output
6| N/A| I| Do not connect, Internal Usage
7| N/A| I| Do not connect, Internal Usage

Label Drawing

Caution

  1. Nissinbo Micro Devices strives to produce reliable and high qualitymicrowave components.
    Nissinbo Micro Devices’s microwave components are intended for specific applications and require proper maintenance and handling. To enhance the performance and service of Nissinbo Micro Devices’s microwave components, the devices, machinery or equipment into which they are integrated should undergo preventative maintenance and inspection at regularly scheduled intervals. Failure to properly maintain equipment and machinery incorporating these products can result in catastrophic system failures.

  2. To ensure the highest levels of reliability, Nissinbo Micro Devices products must always be properly handled. The introduction of external contaminants (e.g. dust, oil or cosmetics) canresult in failures of microwave components.

  3. Nissinbo Micro Devices offers a variety of microwave components intended for particular applications. It is important that you select the proper component for your intended application.
    You may contact Nissinbo Micro Devices ‘s sales office or sales representatives, if you are uncertain about the products listed in the catalog and the specification sheets.

  4. Special care is required in designing devices, machinery or equipment, which demand high levels of reliability. This is particularly important when designing critical components or systems whose foreseeable failure can result in situations that could adversely affect health or safety. In designing such critical devices, equipment or machinery, careful consideration should be given to, amongst other things, their safety design, fail-safe design, back-up and redundancy systems, and diffusion design.

  5. The products listed in the catalog and specification sheets may not be appropriate for use in certain equipment where reliability is critical or where the products may be subjected to extreme conditions. You should consult our sales office or sales representatives before using the products in any of the following types of equipment.

  • Aerospace Equipment

  • Equipment Used in the Deep Sea

  • Power Generator Control Equipment (nuclear, steam, hydraulic)

  • Life Maintenance Medical Equipment

  • Fire Alarm/Intruder Detector

  • Vehicle Control Equipment (automobile, airplane, railroad, ship, etc.)

  • Various Safety Equipment
    This sensor module is NOT intended to be used in motor vehicles nor aircraft.
    Additional considerations are required for use in such environments.
    You (i.e. Host integrator of this module) must consult detail our sales office or sales representatives beforehand.

    1. Nissinbo Micro Devices ‘s products have been designed and tested to function within controlled environmental conditions. Do not use products under conditions that deviate from methods or applications specified in the catalog and specification sheets. Failure to employ Nissinbo Micro Devices ‘s products in the proper applications can lead to deterioration, destruction or failure of the products. Nissinbo Micro Devices shall not be responsible for any bodily injury, fires or accidents, property damage or any consequential damages resulting from the misuse or misapplication of its products. PRODUCTS ARE SOLD WITHOUT WARRANTY OF ANY OF KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
    2. The product specifications and descriptions listed in the catalog and specification sheets are subject to change at any time, without notice.

FCC Statement

Appendix)
FCC Statements of 2ACUJR4274

Responsible party:
Nissinbo Micro Device Inc.
1-1, Fukuoka 2-Chome Fujimino-City
Saitama Prefecture 356-8510 Japan
Tel: +81-49-278-1271, Fax: +81-49-278-1234

This device complies with Part 15 of the FCC rules. Operation is a subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired operation.

Caution
DC power supply for each module should be conformed to the electrical specifications as described in this section. A host in which a module is integrated should provide stable DC power through suitable regulator circuit to the module.

NOTE:
Changes or modifications to the device not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment (s).
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protectionagainst harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

The equipment complies with radio frequency exposure limits set forth by the FCC for an uncontrolled environment.
The device must not be co-located or operating in conjunction with any other antenna or transmitt

RF Exposure Statement (For FCC)
This equipment complies with radio frequency exposure limits set forth by the FCC for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 2.0 cm between the device and the user or bystanders. This device must not be co-located or operating in conjunction with any other antenna or transmitter.

RF Exposure Statement (For ISED)
This equipment complies with radio frequency exposure limits set forth by Industry Canada for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 5.0 cm between the device and the user or bystanders. This device must not be co-located or  operating in conjunction with anyother antenna or transmitter.

*Above specifications are subject to change without notice.

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