Microwave filter distributed on circuit board of wireless...

Details Microwave filter distributed on circuit board of wireless... Microwave filter distributed on circuit board of wireless...

2006-11-28

2006-11-28

Vuong, Quochien B. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S213000, C455S309000, C455S339000, C333S204000, C333S202000

Reexamination Certificate

active

07142836

ABSTRACT:
The present invention is to provide a microwave filter distributed on a circuit board of a wireless communication product, which comprises an input terminal, a resonant chamber of double frequencies, and an output terminal of the microwave filter directly distributed on the circuit board of the wireless communication product as a plurality of microstrips by utilizing a manufacturing technique of printed circuit board for eliminating the harmonic spurious of double frequencies and higher frequency caused by nonlinear distortion of a power amplifier of the wireless communication product.

REFERENCES:
patent: 5530637 (1996-06-01), Fujita et al.
patent: 6608537 (2003-08-01), Kanba et al.
patent: 6653917 (2003-11-01), Kang et al.
patent: 6823201 (2004-11-01), Kai et al.
patent: 6897724 (2005-05-01), Gurvich et al.

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