Title :
Series Reversion Solution for MIMO Microwave Feed Networks
Author_Institution :
Dept. of Electr. Eng. - Electrophys., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
A solution based on series reversion is derived and tested to estimate an N-port device-under-test (DUT) scattering matrix through a multiple-in/multiple-out microwave feed network. The feed network uses power dividers in place of fan-in/fan-out stages of traditional double-pole N-throw (2PNT) switching matrices. A fast recursive algorithm is derived to simultaneously estimate the DUT scattering matrix and solve the multiple scattering problem for weakly interacting networks. In experiment, the method was able to recover the scattering matrix of a passive DUT to within 0.1 dB in magnitude and 2° in phase.
Keywords :
MIMO systems; S-parameters; microwave measurement; microwave switches; power dividers; MIMO microwave feed network; N-port device-under-test scattering matrix; double-pole N-throw switching matrix; fan-in stage; fan-out stage; fast recursive algorithm; multiple input multiple output system; power divider; series reversion solution; Feeds; MIMO; Ports (Computers); Power dividers; Scattering; Scattering parameters; Switches; ${ S}$-parameters; Microwave feed networks; multiple-in/multiple-out (MIMO); nonblocking switching matrix; series reversion;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2013.2279376
