A signal processing apparatus includes a first filter on an in-phase signal channel; a second filter on a quadrature signal channel; a plurality of filter stages having each of more than one signal paths crossing each other which connects the first filter and the second filter; and at least more than one of the filter stages of more than one of a plurality of the filter stages includes a switching circuit disconnecting more than one of the signal paths and a correction unit correcting direct current offsets of the first filter and the second filter by using the switching circuit.

Claims

7 · 3 independent · depth 2

7 granted claims

›1.independentA signal processing apparatus, comprising:na plurality of first filters on an in-phase signal channel;a plurality of second filters on a quadrature si…+3

›5.independentA signal processing apparatus, comprising:na plurality of filter stages, each of the plurality of filter stages includes:a first filter in an in-phase…+1

›7.independentA correction method for correcting direct current offsets of a plurality of filter stages in a signal processing apparatus, comprising:nperforming by …

Classifications

2 codes

IPC · International Patent Classification

Section G — Physics

G06F17/10

USPC · US Patent Classification

708/300

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Pendency

4.3 y

1,587 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Examiner

Tan Mai

art unit 2193 · TC 2100

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Citations: 5 back · 0 forward

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20080201396 A1	21 Aug 2008

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