Infineon Technologies AG Radar sensors for IoT BGT24MTR11

The BGT24MTR11 is a silicon germanium MMIC for signal generation and reception, operating from 24.00 to 26.00GHz. It is based on a 24GHz fundamental voltage controlled oscillator. Switchable frequency prescalers are included with output frequencies of 1.5GHz and 23kHz. The main RF output delivers upto 8dBm signal power to feed an antenna and an auxiliary LO output is available to provide LO signal to separate receiver components. An LO buffer amplifier is included to relax LO drive requirements and a LNA provides low noise figure. A RC polyphase filter (PPF) is used for LO quadrature phase generation of the homodyne quadrature downconversion mixer. Output power sensors as well as a temperature sensor are implemented for monitoring purposes. The device is controlled via SPI and is manufactured in a 0.18µm SiGe:C technology offering a cutoff frequency of 200GHz. The MMIC is packaged in a 32 pin leadless RoHs compliant VQFN package.

Summary of Features

• 24GHz ISM band transceiver MMIC
• Fully integrated low phase noise VCO
• Switchable prescaler with 1.5GHz and 23kHz output
• On chip power and temperature sensors
• Gilbert based homodyne quadrature receiver
• Single ended RF and LO terminal
• Low noise figure NFSSB: 12 dB
• High conversion gain: 26 dB
• High 1 dB input compression point: -12 dBm
• Single supply voltage 3.3 V
• Low power consumption 500 mW
• 200GHz bipolar SiGe:C technology b7hf200
• Fully ESD protected device
• VQFN-32-9 leadless plastic package incl. LTI feature
• Pb-free (RoHS compliant) package

Potential Applications

• Police speed meters
• Street lighting projects
• Intelligent door openers
• Tank level meters
• Motion detectors
• Intruder alarms

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