US 2014/0194081 A1 · Superheterodyne Receiver

Abstract

The invention relates to a superheterodyne receiver, comprising: a sampling mixer being configured to sample an analog radio frequency signal using a certain sampling rate (fs) to obtain a discrete-time sampled signal, and to shift the discrete-time sampled signal towards a first intermediate frequency (|fRF−fLO|) to obtain an intermediate discrete-time signal sampled at the fs; a discrete-time filter being configured to filter the intermediate discrete-time signal at the fs to obtain a filtered signal; and a discrete-time mixer being configured to shift the filtered signal towards a second intermediate frequency (fIF).

Claims21

Dependent claims

A superheterodyne receiver, comprising:

a sampling mixer configured to:
sample an analog radio frequency signal using a certain sampling rate (fs) to obtain a discrete-time sampled signal;
and
shift the discrete-time sampled signal towards a first intermediate frequency (|fRF−fLO|) to obtain an intermediate discrete-time signal sampled at the fs;
a discrete-time filter configured to filter the intermediate discrete-time signal at the fs to obtain a filtered signal;
and
a discrete-time mixer configured to shift the filtered signal towards a second intermediate frequency (fIF).

4 more elements

Dependencies are inferred from the claim text.

Superheterodyne Receiver

Life of this patent

Superheterodyne Receiver

Life of this patent

Abstract

Claims21