Patent ID: 6175726
Filing Date: 2001-01-16
Classification: H03G,H04B,H04L

Abstract:
A receiver for reception of angle modulated/keyed carrier signals, comprising:a synthesizer for synthetic generation of a base signal to be demodulated/decoded and having an I-component and a Q-component from a carrier signal:a low-noise amplifier that precedes the synthesizer;generator for generating additional components of the base signal, the generator being structured such that, based on an evaluation of amplitude information contained in the I-component and Q-component, at least one A-component, phase-shifted relative to the I-component of the base signal, and one B-component, phase-shifted relative to the Q-component of the base signal, are generated;the synthesizer being a two-stage synthesizer;a first synthesizer stage for synthetic generation of the I-component and of the Q-component from the carrier signal, said first synthesizer stage having a first local oscillator operated with a constant frequency;a second synthesizer stage following the first synthesizer stage, said second synthesizer stage having a second local oscillator adjustable with a variable frequency and a mixer arrangement for suppression of mirror frequencies in a synthetic generation of a base signal to be demodulated/decoded;the amplifier having a controller with which all carrier signals contained within an amplitude spectrum and pending at an input side of the amplifier are amplified to an amplitude of a signal output at an output side of the amplifier to the synthesizer, said amplitude allowing generation of the A-component and of the B-component.