Doppler Radar Microwave Motion Sensor Wireless Module

Doppler Radar Microwave Motion Sensor Wireless Module

- 100% Brand New Doppler Radar Microwave Motion Sensor Wireless Module

- RF the Microwave Sensor. 

- Uses Doppler principle. 

- Low cost & Low Power Consumption. 

- Pin Type & No Pb free Type (No Rohs). 

- Small and Flat Profile. 

- Reliable Construction & High Sensitivity. 

- For more information, click here.

Transmitter

- Frequency : 10.525GHz 

- Frequency Setting Accuracy : 3MHz 

- Power Output (Min.) : 13dBm EIRP 

- Operating Voltage : +5V +/- 0.25V 

- Operating Current (CW): 60mA max, 37mA typical 

- Harmonic Emissions: -10dBm

Receiver

- Sensitivity (10dB S/N ratio) in 3Hz to 80Hz band width : -86dBm 

- Noise in 3Hz to 80Hz band width : 10μV 

- Antenna Gain : 8dBi 

- E Plane 3dB Beamwidth : 36'. 

- H Plane 3dB Beamwidth: 72'

Module Characteristics

- Weight: 6 grams. 

- Dimension : 37mm x 45mm x 8mm

- Power/Temp. Coefficient(over operating temp. range):3dB 

- Frequency/Temp. Coefficient(over operating temp. range : 6.5MHz 

- Operating Temperature Range : -20'C to +55'C 

- Storage Temperature Range : -30'C to +70'C

Use of Microwave Motion Sensor 

- Traffic / express highway watch and control. 

- Security relation products (sensor and alarm set etc). 

- Automobile rear collision warning. 

- Automatic door activation. 

- Sensor light. 

- Sensors applies in all products which operate. 

Additional Information

- Microwave Motion Sensor Module is developed applying Doppler Radar principle. 

- The role of Sensor Module is transmitting a low power Microwave from transmitting antenna and receiving the microwave energy reflected by objects to receiving antenna. 

- If the movement of the object is detected by the microwave motion sensor, the reflected microwave frequency is shifted away from the transmit frequency to receiving antenna. 

- The reflected and shifted microwave frequency is mixed with the transmit microwave frequency and results a low frequency voltage at the output of the sensor. 

- The Microwave Motion Sensor Module is designed with Dielectric Resonator Oscillator (DRO). 

- The product is widely applied in the locations that require the auto-induction control similar to the automatic gate control switch, security system, automatic recording control system of ATM cash dispenser and automatic signal machine on the train. This is a kind of standard Doppler radar detector with 10.525GHz microwave. Comparing to other detecting methods, this one is characterized in the following advantages: 

- 1. Not-contact detection; 

- 2. Free from the affects of the temperature, humidity, noise, airflow, dust and light ray, and suitable with the extreme environments; 

- 3. Strong ability of radio-frequency interference resistance; 

- 4. Output power is only 5mW, no harming to the human body; 

- 5. Long range: detection coverage is over 20 meters.

Introduction to Doppler principle

- Doppler theory is based on the time. When the radio wave comes up against the object under way, it will be reflected and the frequency of the reflected wave will be changed by the moving state of the object. If the position of such object is fixed, the frequency of the reflected wave will be equal to the one of the transmitted wave. If the object moves along the emissive direction, the reflected wave will be compressed, namely the frequency of the reflected wave will be strengthened; Contrarily, if the object moves against the emissive direction, the frequency of the reflected wave will be reduced and that is the Doppler effect. Such phenomenon is normal in the daily life. For example, as a whistling police wagon fast passes by your side, you will hear the changes of the frequency of the sound: when the police wagon approaches to you with the high speed (comparing to the fixed sound source), the transmission time of the sound is shortened and the frequency is increased. While the police wagon is far from you, the transmission time of the sound is lengthened and the frequency is decreased.

- 1 x Doppler Radar Microwave Motion Sensor Wireless Module

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