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Infineon radar chip features in new motion detector

24GHz SiGe transceiver is at the heart of compact surface mountable radar device

Infineon and InnoSenT have released a surface mountable radar (SMR) motion detector operating in the 24 GHz ISM band based on the latest 24 GHz transceiver MMIC BGT24LTR11 from Infineon.

Operating in the 24.0 GHz to 24.25 GHz ISM band, the SiGe Infineon transceiver features a fully integrated low phase noise voltage controlled oscillator (VCO) and built-in temperature compensation circuit for VCO stabilisation. 

InnoSenT's compact  (20 mm x 15 mm x 3 mm) SMR is designed for security applications, home-automation, lighting control, intelligent machine control, touch-free switches, and movement detection.

Radar used in motion detection applications increases accuracy when compared to passive infrared (PIR) technology, according to Infineon. It allows a more precise measurement of object detection and provides new capabilities such as the detection of speed and direction of moving objects. Compared to camera based systems, radar allows detection of the objects while keeping identities anonymous.

The SMR series currently comprises three types with different antenna characteristics. In addition to the option of simple motion detection with a corresponding evaluation, it is also possible to determine speed information and direction of movement to the detected object from the returned data. The SiGe radar MMIC from Infineon was designed with the Doppler-radar applications in mind, which enables additional functionalities.

Beside 24 GHz fundamental voltage controlled oscillator (VCO) it also brings variants for FMCW (frequency modulated) or FSK (frequency shift keying) operation mode to this series.

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