CPC H01P 5/10 (2013.01) [H01F 27/2804 (2013.01); H01F 27/29 (2013.01); H03H 7/42 (2013.01); H01F 2027/2809 (2013.01)] | 11 Claims |
1. A balun comprising:
an unbalanced terminal;
a first balanced terminal and a second balanced terminal;
a first main line having a first end that is connected to the unbalanced terminal;
a second main line having a first end that is connected to a second end of the first main line, and having a second end that is open;
a first sub-line connected between the first balanced terminal and a reference potential, and coupled to the first main line; and
a second sub-line connected between the second balanced terminal and the reference potential, and coupled to the second main line,
wherein the second sub-line comprises a first partial line connected to the second balanced terminal, and a second partial line connected between the first partial line and the reference potential,
wherein the second main line comprises a third partial line connected to the first main line, and a fourth partial line connected in series to the third partial line, and
wherein a distance between the first partial line and the third partial line is shorter than a distance between the second partial line and the fourth partial line.
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