Achieving Wireless Cable Testing of High-order MIMO Devices with a Novel Closed-form Calibration Method

Fengchun Zhang, Wei Fan*, Zhengpeng Wang

*Kontaktforfatter

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Abstrakt

Highly integrated multiple-input multiple-output
(MIMO) system designs have posed great challenges to MIMO
device performance testing in conventional cable conducted
setups. A wireless cable method, which can achieve cable testing
functionality without actual radio frequency (RF) cable connection,
has recently been considered as a strong alternative to
conductive testing method. However, its applicability to highorder
MIMO antenna systems is mainly limited by the calibration
complexity in the literature. To tackle this issue, a novel closedform
calibration method is proposed, which can largely speed up
the calibration procedure and make the testing method practical
for MIMO devices of arbitrary orders. Some practical factors affecting
the calibration performance are discussed with numerical
simulations. The proposed algorithm is further experimentally
validated for a device under test (DUT) with four antennas
in the 3.45-3.55 GHz frequency band. The detailed theoretical
analysis together with numerical simulations and experimental
validations have demonstrated the effectiveness and robustness
of the proposed algorithm.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Antennas and Propagation
ISSN0018-926X
DOI
StatusUdgivet - 15 jun. 2020

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