| 摘要 |
The present invention provides a thin film balun according to an embodiment of the present invention includes: an unbalanced transmission line which includes two coils; a balanced transmission line which includes two coils and is electromagnetically coupled to the unbalanced transmission line; a first electrode which is connected to the balanced transmission line and constitutes a capacitor 4; and a second electrode 51 which is connected to a ground terminal 72 and disposed to be opposed to the first electrode and constitutes the capacitor 4. The second electrode 51 has a section opposed to the coils configuring the unbalanced transmission line or the balanced transmission line, the section being integrally formed with a section opposed to the first electrode.
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