180.degree. power divider for a helix antenna

Details 180.degree. power divider for a helix antenna 180.degree. power divider for a helix antenna

1995-08-09

1996-11-05

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333 26, 343859, H01P 512, H01P 510

Patent

active

055721729

ABSTRACT:
A 180.degree. power divider accepts an input signal and splits it into two output signals that are equal in amplitude and differ in phase by 180.degree.. In a first region, an unbalanced input signal travels along a trace on a circuit surface of a substrate. On the opposite surface is a ground plane. In a second region, the ground plane tapers to a width that is substantially equal to the width of the signal trace. As a result, opposite the signal trace is a return signal trace of substantially the same width. In this region, the signal is a balanced signal, and for the current flowing in the signal trace, there is an equal but opposite current flowing in the return signal trace on the opposite side. In a third region, the return signal trace is brought to the circuit surface of the substrate and a second ground plane is provided on the opposite surface. This second ground plane is floating with respect to the first ground plane. The return signal differs in phase from the other signal by 180.degree..

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