CPC H01P 1/20372 (2013.01) [H01P 1/20381 (2013.01); H01Q 13/206 (2013.01); H01P 5/10 (2013.01)] | 20 Claims |
1. A compact planar balun formed on a substrate, comprising:
a hairpin-shaped conductive microstrip, comprising:
first and second linear segments in parallel with each other having a first end forming first and second differential contacts and having a second end, wherein the first and second linear segments have a first characteristic impedance; and
a U-shaped segment integrally formed at the second end of the first and second linear segments, wherein the U-shaped segment has a second characteristic impedance that is less than the first characteristic impedance; and
a single-ended contact conductively coupled at a location along the first linear segment.
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