Balun with intermediate non-terminated conductor

A balun comprising:

• a first conductor having a continuous length between a first end for conducting a signal relative to a circuit ground and a second end for conducting a balanced signal with a first polarity,
• a second conductor inductively coupled to the first conductor substantially along the length of the first conductor, and having first and second ends, the first end of the second conductor being open-circuited and disposed proximate to the first end of the first conductor, the second end of the second conductor being open-circuited and proximate to the second end of the first conductor;
• and
• a third conductor having a continuous length extending between a first end proximate to the first end of the second conductor and a second end proximate to the second end of the second conductor, the first end of the third conductor connected to the circuit ground, the second end of the third conductor for conducting the balanced signal with a second polarity opposite the first polarity, the second conductor being inductively coupled to the third conductor substantially along the length of the third conductor.