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US 2004/0169566 A1Published application
Frequency-selective balun transformer
AssigneeSTMicroelectronics S.r.l.
InventorsFabrice Guitton, Francois Dupont
Life of this patent
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Abstract
A mode-switching transformer selective on a band centered on a first frequency, comprising, between a same common mode input/output terminal and respectively one of two differential mode input/output terminals, a high-pass filter with a cut-off frequency smaller than said first frequency, a band-pass filter with a central frequency greater than said first frequency.
Claims11
A balun transformer selective on a band centered on a first frequency, comprising, between a same common mode input/output terminal and respectively one of two differential mode input/output terminals:
- a high-pass filter with a cut-off frequency smaller than said first frequency;
- and
- a band-pass filter with a central frequency greater than said first frequency.
Dependencies are inferred from the claim text.