Balun transformer, mounting structure of balun transformer, and electronic apparatus having built-in mounting structure
US7656262B2 · kind B2 · utility
11Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2008 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Feb 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a balun transformer, in which first to fourth layer coils are stacked and coupled magnetically; one end of each coil of the first to fourth layer coils is grounded; the second and third layer coils are connected in parallel, an unbalanced signal is input/output to/from a common terminal of the second and third layer coils; a first balanced signal is input/output to/from the other end of the first layer coil; and a second balanced signal is input/output to/from the other end of the fourth layer coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.