Related Manuals for Infineon BGT24MTR11
Summary of Contents for Infineon BGT24MTR11
- Page 1 B GT2 4 MT R11 User 's Gu ide t o B G T24 MT R1 1 24 G Hz R adar Applic atio n N ote A N 305 Revision: Rev. 1.0 2012-11-15 RF and P r otecti on D evic es...
- Page 2 Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life.
- Page 3 BGT24MTR11 User's Guide Application Note AN305 Revision History: 2012-11-15 Previous Revision: prev. Rev. x.x Page Subjects (major changes since last revision) Trademarks of Infineon Technologies AG A-GOLD™, BlueMoon™, COMNEON™, CONVERGATE™, COSIC™, C166™, CROSSAVE™, CanPAK™, CIPOS™, CoolMOS™, CoolSET™, CONVERPATH™, CORECONTROL™, DAVE™, DUALFALC™,...
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Page 4: Table Of Contents
Mixer ..............................11 Sensors ............................. 12 Power Sensors ........................... 12 Temperature Sensor .......................... 13 Authors List of Figures Figure 1 BGT24MTR11 block diagram ....................... 5 Figure 2 VCO frequency vs. tuning voltage V and temperature ........... 6 FINE COARSE Figure 3 3D plot: Output frequency vs. -
Page 5: Introduction
BGT24MTR11 is the lead product of Infineon’s BGT24-series of 24 GHz radar transceiver products and serves here as an example for all BGT24 products in this application note. All building blocks of BGT24MTR11 described here can be found on the other two products, BGT24MTR12 and BGT24MR2 as well. The additional information in this application note is valid for these products as well. -
Page 6: Vco Section
Tuning Voltage Inputs BGT24MTR11 has two inputs for tuning the VCO’s frequency of oscillation, FINE (pin 4) and COARSE (pin 5). Both inputs can be used independently of each other to adjust the frequency output. As the pin names imply, COARSE has a steeper tuning slope compared to FINE. -
Page 7: Figure 3 3D Plot: Output Frequency Vs
BGT24MTR11 User's Guide VCO Section Figure 3 3D plot: Output frequency vs. V and V COARSE FINE 25°C < 23.5GHz 3.25 23.5GHz < 24.0GHz 24.0GHz < 24.5GHz 24.5GHz < 25.0GHz 2.75 25.0GHz < 25.5GHz 25.5GHz <... -
Page 8: Prescalers
VCO Section Prescalers BGT24MTR11 has two cascaded built-in prescalers. The first prescaler divides the oscillator’s frequency by 16, the second reduces the output of the first one by the factor of 65536 – resulting in a total division factor of 1,048,576. -
Page 9: Transmitter Section
BGT24MTR11 User's Guide Transmitter Section Transmitter Section This chapter describes the functionalities of the main power amplifier (PA in the block diagram) that provides the ouput for transmitting the actual radar signal at the TX output as well as the medium power amplifier (MPA) that provides the signal at the LO output. -
Page 10: Enabling And Disabling Of The Output Power
BGT24MTR11 User's Guide Transmitter Section TX Output Power vs. Frequency and Temperature -40°C 10.5 25°C 75°C 125°C 24.05 24.1 24.15 24.2 24.25 Frequency / GHz Figure 6 TX output power vs. frequency for different temperatures 4.1.1 Enabling and Disabling of the Output Power The TX outputs are disabled by default after powering-up the IC. -
Page 11: Lo Section
Receiver Section LO Section BGT24MTR11 was designed to be used in monostatic radars. These radars are only capable of detecting a target’s distance and speed, but not the angle of the target’s position relative to the antenna. It is possible, though, to determine this angle when using additional RX-antennas and receiver chains. -
Page 12: Sensors
Sensors Sensors BGT24MTR11 has three built in sensors for measuring TX-power, LO-power and chip temperature All three sensors offer their readings via analog output voltages, which can be accessed via a multiplexer that connects the single output voltages to the ANA pin (pin 25). -
Page 13: Temperature Sensor
BGT24MTR11 User's Guide Sensors Temperature Sensor Monitoring of the chip temperature is provided by the on-chip temperature sensor which delivers temperature- proportional voltage to the TEMP output pin (pin 30). Alternatively the output voltage can be read out via the analog multiplexer output ANA (pin 25). -
Page 14: Authors
BGT24MTR11 User's Guide Authors Authors Dietmar Stolz, Staff Engineer of Business Unit “RF and Protection Devices” Application Note AN305, Rev. 1.0 2012-11-15 14 / 15... - Page 15 . i n f i n e o n . c o m Published by Infineon Technologies AG AN305...