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

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

Introduction Introduction Flexible: - main radiation direction, - side lobe structure, - null-point direction. Applications: - radar, - cell-phone-networks, - airplane and satellite tracking

Transmitter Antenna Array Transmitter Antenna Array N � K � 1 1 � � T j � � � e � r � � � � � � � F F I e r n k ( , ) ( , ) , e n k , n � k � 0 0 � � � � � � � � e [cos sin , sin sin , sin ] r � � � � � r k x n y k [ , , 0 ] n ,

� /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

4 Channel hannel RF Block RF Block for for X X – – band band 4 C Frequency: 9..10 GHz P RFout = 2 W (33 dBm) Consumption: 250 W @ 8 V @ 32 W RF Size: 160x130x40 mm

4 Channel hannel RF Block RF Block for for UMTS UMTS 4 C Frequency: 1.8..2 GHz P RFout = 0.2 W (23 dBm) Consumption: 40 W @ 12 V @ 3.2 W RF Size: 180x130x28 mm

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

Calibration Calibration Measure S 21 versus amplitude, � � phase and S 21 a , p , f frequency �

10 GHz ��������������������������������������������������� ����������������������������������������������������� 2 GHz

10 GHz GHz – – Linear Linear Array Array 10

10 GHz GHz – – Linear Linear Array Array 10 ����������������� ����������������� #" #" " " �� �� �& �! �� � ��" �� ��� ��" ��& ��� ��� ��! ��" ��� �� ��& ��� ��� ��" �%" ��� �%� ��! �%& �� �%� ��" ��� ��" �!" �$" �$" ����������������� ����������������� #" #" " " �� �� �! �! � � �� �� ��" ��" ��� ��� ��! ��! �� �� ��� ��� ��" ��" ��� ��� ��! ��! �� �� ��� ��� �%" �%" �%� �%� ��" �%! ��" �%! �$" �$"

10 GHz GHz – – Planar Planar Array Array 10 ����������������� #" " �� �& �� ��" ��� ��& ��� ��" ��� ��& ��� �%" �%� �%& �%� ��" �!" �$" Vertical � and horizontal � section ����������������� #" " �� �& �� ��" ��� ��& ��� ��" ��� ��& ��� �%" �%� �%& �%� ��" �!" �$"

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

2 GHz GHz – – Linear Linear Patch Patch Array Array 2 �������� ���������� #" #" " " �& �& ��" ��" ��& ��& ��" ��" ��& ��& �%" �%" �%& �%& �!" �!" �!& �!& �&" �&" �&& �&& ��" � " ��" � " �$" �$" ��������������������� �������� #" #" " " �& �& ��" ��" ��& ��& ��" ��" ��& ��& �%" �%" �%& �%& �!" �!" �!& �!& �&" �&" �&& �&& ��" � " ��" � " �$" �$"

2 GHz GHz – – Linear Linear GP GP Array Array 2 �������������������������������������������������� ���������������������������������� #" #" " " �� �! �& � �� ��" ��" ��� ��& ��! �� ��" ��� ��& ��" ��� �%" ��! �� �%& ��� �%" �!" �%� �%! �!& �% �%� �&" �!" �&& �!� ��" �!& ��" � " �$" �$"

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

Acknowledgement Acknowledgement This work was supported by: - Ministry of Defence – Agency of Technology - Bonn Hungary Electronics - Mobile Innovation Center

����������������� #" " �� �! � �� ��" ��� ��! �� ��� ��" ��� ��! �� ��� �%" �%� ��" �%! �$" Thank you for your kind attention!