Xetron Corporation

Richard M Hahn

A bandpass filter network having a first two pole filter and a second two pole filter provided in parallel to the first two pole filter. The first filter is optimally coupled while the second filter is extremely overcoupled. Moreover, the first filter and second filter are shifted 180.degree. out of phase with one another. This phase shift is preferably accomplished by a balun transformer. Alternatively, the 180.degree. phase shift may be accomplished by having the first and second filters utilizing different forms of coupling (i.e., one inductively coupled, the other capacitively coupled).

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Cincinnati, OH, United States of America

Richard M Hahn