| 摘要 |
According to embodiments of the present invention, a balun is disposed on a package that is to receive a die. In embodiments, the balun includes a first metal trace disposed on a first base and a second metal trace disposed on a second base. In embodiments, the first metal trace is one-quarter wavelength of an operating wavelength for a radio frequency (RF) signal and the second metal trace is three-quarters wavelength of the wavelength.
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