background image

 

BGT24MTR11 

 

User's Guide 

 

 

  

VCO Section 

Application Note AN305, Rev. 1.0 

2012-11-15 

7 / 15 

 

 

Figure 3 

3D plot: Output frequency vs. V

COARSE

 and V

FINE

 

 

 

Figure 4 

2D plot: Output voltage vs. V

COARSE

 and V

FINE

 

0

0.25

0.5

0.75

1

1.25

1.5

1.75

2

2.25

2.5

2.75

3

3.25

0

0.25

0.5

0.75

1

1.25

1.5

1.75

2

2.25

2.5

2.75

3

3.25

 

25°C

V

fine

 (V)

 

V

c

o

a

rs

e

 (

V

)

f

TX

 < 23.5GHz 

23.5GHz 

 f

TX

 < 24.0GHz

24.0GHz 

 f

TX

 < 24.5GHz

24.5GHz 

 f

TX

 < 25.0GHz

25.0GHz 

 f

TX

 < 25.5GHz

25.5GHz 

 f

TX

 < 26.0GHz

Summary of Contents for BGT24MTR11

Page 1: ...RF and Protection Devices BGT24MTR11 Application Note AN305 Revision Rev 1 0 2012 11 15 User s Guide to BGT24MTR11 24 GHz Radar...

Page 2: ...ry terms and conditions and prices please contact the nearest Infineon Technologies Office www infineon com Warnings Due to technical requirements components may contain dangerous substances For infor...

Page 3: ...hip Bluetooth of Bluetooth SIG Inc CAT iq of DECT Forum COLOSSUS FirstGPS of Trimble Navigation Ltd EMV of EMVCo LLC Visa Holdings Inc EPCOS of Epcos AG FLEXGO of Microsoft Corporation FlexRay is lice...

Page 4: ...5 Receiver Section 11 5 1 Low Noise Amplifier 11 5 2 Mixer 11 6 Sensors 12 6 1 Power Sensors 12 6 2 Temperature Sensor 13 Authors 14 List of Figures Figure 1 BGT24MTR11 block diagram 5 Figure 2 VCO fr...

Page 5: ...nd BGT24MR2 as well The additional information in this application note is valid for these products as well 2 Overview The picture below shows the internal block diagram of BGT24MTR11 Figure 1 BGT24MT...

Page 6: ...resistor to Vcc This means that when a pin is left open it will be internally at Vcc So if both pins are left open the oscillator will be around 26 GHz at room temperature Note It is mandatory for eac...

Page 7: ...s VCOARSE and VFINE Figure 4 2D plot Output voltage vs VCOARSE and VFINE 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 2 25 2 5 2 75 3 3 25 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 2 25 2 5 2 75 3 3 25 25 C Vfine V V co...

Page 8: ...capacitor at a PLL s input In case a PLL does not support differential inputs it is possible to use any of the two outputs and terminate the unused one Figure 5 Termination of Div16 outputs This pres...

Page 9: ...rminate one of the TX outputs with 50 and use the other one directly as a 50 output port However this will reduce the available output power by 3 dB Note It is not recommended to create a 100 single e...

Page 10: ...l loop can re lock the frequency again There are two possibilities to turn on and off the TX ouput power The first is via the SPI bus and the second is using the TXOFF pin 4 1 1 1 Enabling disabling v...

Page 11: ...4 PC2_BUF of the SPI register to HIGH In low output power mode the output power is reduced by 3 5 dB In case the LO output is not required this pin can be left open 5 Receiver Section BGT24MTR11 s rec...

Page 12: ...ak voltage detectors are connected to the output of the TX power amplifier and to the LO medium power amplifier To eliminate temperature and supply voltage variations a reference output voltage VREF i...

Page 13: ...age can be read out via the analog multiplexer output ANA pin 25 The temperature sensor can be independently biased through VCCTEMP pin 29 This makes it possible to measure the chip temperature while...

Page 14: ...BGT24MTR11 User s Guide Authors Application Note AN305 Rev 1 0 2012 11 15 14 15 Authors Dietmar Stolz Staff Engineer of Business Unit RF and Protection Devices...

Page 15: ...w w w i n f i n e o n c o m Published by Infineon Technologies AG AN305...

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