www.ycars.org/efra/module%20c/antmatch.htm

Used to impedance match and to convert from unbalanced feed to balanced output or balanced to unbal BAL (balanced) UN(unbalanced)

Hi

see http://www.ycars.org/EFRA/Module%20C/AntMatch.htm

and http://www.qsl.net/iz7ath/web/02_bre.../pag01_eng.htm


PL

Hi,

sometimes used as 180deg hybrids (e.g. in mixers).

flyhigh

for example:
1.impedance transform (according to the coils)
2.differential signal to single-ended signal

check this document it has some terms related with baluns