Switchable N-way power divider/combiner
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United States of America Patent
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Feb 16, 1999
Grant Date -
N/A
app pub date -
Nov 27, 1996
filing date -
Nov 27, 1996
priority date (Note) -
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Abstract
An improved Wilkinson-type power divider/combiner possessing switching capabilities for selectively controlling operative modes of its constituent dividing/combining channels is disclosed. The switchable power divider/combiner includes N first switches connecting N input/output transmission lines to a common junction and N second switches connecting N isolation resistors coupled to the N input/output transmission lines to a common node. The operating mode of the power divider/combiner can be controlled by activating each pair of the first and second switches to a closed or open switch position. The impedance values of the dividing/combining channel transmission lines are adjusted to provide the optimal impedance matching in both N-way and (N-1)-way operating modes. The resulting switchable power divider/combiner is capable of providing efficient power combining and distribution in a low-loss, phase-balanced manner in both N-way and (N-1)-1 way modes. When one of the signal-processing channels in the dividing/combining system fails, the power divider/combiner is switched to the (N-1)-way mode to provide continuing operation of the system without any degradation in the signal characteristics.
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