Title :
An External Calibration Scheme for DBF Antenna Arrays
Author :
Pawlak, Holger ; Jacob, Arne F.
Author_Institution :
OHB-Syst. AG, Bremen, Germany
Abstract :
A novel calibration scheme is presented that is especially suited for complex digital beamforming (DBF) antenna arrays at millimeter-wave frequencies. Calibration data is extracted by sampling the field of each radiator at certain locations near the array by fixed probe antennas. A scalable calibration model for evaluation of the measured data is described. First tests are performed on a small passive array representing a unit cell of larger arrays. The calibration scheme is subsequently applied to and tested on a 64 element DBF transmit antenna array.
Keywords :
calibration; millimetre wave antenna arrays; planar antenna arrays; DBF antenna arrays; DBF transmit antenna array; complex digital beamforming antenna arrays; external calibration scheme; fixed probe antennas; millimeter wave frequencies; Antenna arrays; Antenna measurements; Array signal processing; Calibration; Data mining; Frequency; Millimeter wave measurements; Probes; Sampling methods; Testing; Antenna array; calibration; digital beamforming; probe antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2036195
