Digital Beamform Beamforming ing Digital Linear and and Planar - - PowerPoint PPT Presentation

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Aug 16, 2023 25 likes •217 views

Digital Beamform Beamforming ing Digital Linear and and Planar Planar Array Array Linear Budapest University of Technology and Economics Department of Broadband Infocommunications and Electromagnetic Theory Broadband Infocommunications

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Digital Digital Beamform Beamforming ing Linear Linear and and Planar Planar Array Array

Levente Dudás dudas@mht.bme.hu Péter Kovács kovacs.peter@mht.bme.hu Rudolf Seller seller@mht.bme.hu

Budapest University of Technology and Economics Department of Broadband Infocommunications and Electromagnetic Theory Broadband Infocommunications Group

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Introduction Introduction

Flexible:

main radiation direction,
side lobe structure,
null-point direction.

Applications:

radar,
cell-phone-networks,
airplane and satellite tracking

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Transmitter Antenna Array Transmitter Antenna Array

1 ,

) , ( ) , (

N n K k r e j k n e

T k n r

e I F F

]

, , [

k y n x r k

]

sin , sin sin , sin [cos

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/2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 /2 1 1 1 1 1 1 1 1

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4 C 4 Channel hannel RF Block RF Block for for X X – – band band

Frequency: 9..10 GHz PRFout = 2 W (33 dBm) Consumption: 250 W @ 8 V @ 32 W RF Size: 160x130x40 mm

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4 C 4 Channel hannel RF Block RF Block for for UMTS UMTS

Consumption: 40 W @ 12 V @ 3.2 W RF Size: 180x130x28 mm Frequency: 1.8..2 GHz PRFout = 0.2 W (23 dBm)

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Digital Control Unit Digital Control Unit

DC: 8..15 V @ 1.5..0.8 A Precision: 12 bits x 32

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Calibration Calibration

Measure S21 versus amplitude, phase and frequency

, p , a S21

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10 GHz

2 GHz

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10 10 GHz GHz – – Linear Linear Array Array

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10 10 GHz GHz – – Linear Linear Array Array

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Vertical and horizontal section

10 10 GHz GHz – – Planar Planar Array Array

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2 2 GHz GHz – – Linear Linear Patch Patch Array Array

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2 2 GHz GHz – – Linear Linear Patch Patch Array Array

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2 2 GHz GHz – – Linear Linear GP GP Array Array

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Conclusion Conclusion

Realized:

4 channel RF blocks
controller software and hardware
automated calibration process and databases
radiation pattern measuring

Future:

further in-situ antenna measuring
integration with RDFS and ICS for mobile repeaters

SLIDE 18

Acknowledgement Acknowledgement

This work was supported by:

Ministry of Defence – Agency of Technology
Bonn Hungary Electronics
Mobile Innovation Center

SLIDE 19

Thank you for your kind attention!

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