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US 5,859,607 AGranted
Receiver with digital processing of a phase-splitted input signal
AssigneeU.S. Philips Corporation
InventorsArie J. Leeuwenburgh, Rudy J. Van De Plassche
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Abstract
In a receiver, both an A/D conversion (ADC) and a phase-split (PSF) is carried out on an input signal (R) to obtain a pair of digital signals (Xd,Yd) which are mutually phase shifted. The pair of digital signals (Xd,Yd) is processed (VSP) as a vectorial signal with a frequency-characteristic which is asymmetrical with respect to zero frequency. In order to make the receiver better suited for relatively low A/D conversion sampling frequencies (Fs), the phase-split (PSF) is carried out prior to the A/D conversion (ADC).
Claims4
A receiver comprising:
- an input section for A/D converting and phase-splitting an input signal to obtain a pair of digital signals (Xd,Yd) which are mutually phase shifted;
- and
- a vectorial signal processor for processing said pair of digital signals as a vectorial signal, the vectorial signal processor having an asymmetrical frequency-characteristic with respect to zero frequency;
- characterized in that the input section is arranged to carry out the phase-splitting prior to the A/D conversion.
1 more element
A method of reception comprising the steps:
- A/D converting and phase-splitting an input signal to obtain a pair of digital signals (Xd,Yd) which are mutually phase shifted;
- and
- processing said pair of digital signals (Xd,Yd) as a vectorial signal with a frequency characteristic which is asymmetrical with respect to zero frequency;
- characterized in that the step of phase-splitting the input signal is performed prior to the step of A/D converting.
1 more element
Dependencies are inferred from the claim text.