Package integrated one-quarter wavelength and three-quarter...

Details Package integrated one-quarter wavelength and three-quarter... Package integrated one-quarter wavelength and three-quarter...

2006-07-25

2006-07-25

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S025000

Reexamination Certificate

active

07081800

ABSTRACT:
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.

REFERENCES:
patent: 6424227 (2002-07-01), El-Sharawy
patent: 6803835 (2004-10-01), Frank

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