PCB Slot Based Transformers to Avoid Common-Mode Resonances in Connected Arrays of Dipoles
article
The scanning performances of connected arrays are degraded
by the excitation of common-mode resonances that are compatible with balanced
feeding lines. Here, a strategy to avoid these resonances is outlined.
The strategy involves feeding the dipoles via printed circuit board (PCB)
based transformers and significantly reducing the feeding periods in the direction
of the dipoles. The number of transmit/receive (T/R) modules does
not have to be increased as a consequence of the increased sampling of the
dipoles. Full wave simulations that validate the procedure are presented
by the excitation of common-mode resonances that are compatible with balanced
feeding lines. Here, a strategy to avoid these resonances is outlined.
The strategy involves feeding the dipoles via printed circuit board (PCB)
based transformers and significantly reducing the feeding periods in the direction
of the dipoles. The number of transmit/receive (T/R) modules does
not have to be increased as a consequence of the increased sampling of the
dipoles. Full wave simulations that validate the procedure are presented
TNO Identifier
408808
Source
IEEE Transactions on Antennas and Propagation, 58(August), pp. 2767-2771.
Pages
2767-2771
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