Compact radio frequency harmonic filter using integrated...

Details Compact radio frequency harmonic filter using integrated... Compact radio frequency harmonic filter using integrated...

2004-12-23

2008-08-26

Urban, Edward (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S307000, C455S114100, C333S175000, C333S176000

Reexamination Certificate

active

07418251

ABSTRACT:
A radio frequency (“RF”) harmonic filter circuit as disclosed herein is fabricated using integrated passive device (“IPD”) technology. The RF harmonic filter circuit is configured to provide second, third, and fourth harmonic rejection while providing good input and output impedance matching. The RF harmonic filter circuit employs only one IPD loop inductance (preferably used for a second harmonic resonance circuit), which results in a significant die/package size reduction. The RF harmonic filter circuit also employs a combined circuit that performs input and/or output impedance matching and third harmonic rejection.

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