Lengier, Lukasz and Farrell, Ronan
Amplitude and Phase Mismatch Calibration Testbed for
2x2 Tower-Top Antenna Array System.
In: China-Ireland Conference on Information and Communications Technologies.
This paper aims to design a 2x2 antenna array testbed to serve as a complete tower-top calibration
system that is able to eliminate the effect of transmitter differences of an array elements. The
testbed architecture is based on the advanced tower-top interlinear reference calibration scheme
where a non-radiative reference sensor is located in the centre of the array and four transmitter
elements are coupled to its. The prototype system was built using commercial off the shelf
components and it operates in the 2.4 GHz ISM band. Software control capability supported with
PC parallel port interface makes it flexible for various calibration algorithm implementation. A
continuously updated (real time) calibration is also possible and easy to apply.
We presents an experimental results of tower-top calibration accuracy in transmit mode
operation. The measured performance of prototype system calibration shows amplitude and phase
imbalance better than 0.15 dB and 1.1º.
Keywords: array calibration, antenna array, base-station transmitter architecture
Conference or Workshop Item
||array calibration; antenna array; base-station transmitter architecture;
||Faculty of Science and Engineering > Electronic Engineering
Dr. Ronan Farrell
||26 May 2009 09:02
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