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Signal receiver and mobile communication device

A device and signal technology, applied in the field of analog-to-digital conversion, can solve the problems that the known method is not flexible and accurate, and achieve the effect of reducing the amount of power

Inactive Publication Date: 2012-03-21
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, known ways of adjusting the dynamic range are not flexible and precise and would require additional circuitry

Method used

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  • Signal receiver and mobile communication device
  • Signal receiver and mobile communication device
  • Signal receiver and mobile communication device

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A diagram showing a receiver device with adjustable filtering accuracy. The device has an antenna 11 connected to a radio frequency front end 12. Connect the analog signal from the front end 12 to the amplifier 13, for example, by measuring the signal power in the analog signal strength detector circuit at the output of the amplifier 13, so that the amplifier 13 has automatic gain control. The amplifier provides the amplified analog signal to the analog-to-digital converter 14 (ADC), and the analog-to-digital converter 14 provides the digital signal to the digital signal processor 15. The digital signal processor includes a digital filter for separating the desired signal from the input signal received at the input. In this digital receiver structure, the ADC appears somewhere in the receiver chain to convert the information signal of the desired channel into the digital domain. This digitization has led to a more flexible receiver structure, for example, chan...

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Abstract

A signal receiver processing circuit is for isolating a desired signal from analog input signal that is susceptible to variations in signal power, e.g. from a radio front end (12). The device has a variable gain amplifier (13) and an analog to digital converter (14) for providing a digital signal to a digital signal processor (15), the digital signal processor including a digital filter. The device has a control unit (16) for adjusting a filtering accuracy of the analog to digital converter (14) and / or the digital signal processor unit (15) in dependence of a signal quality of the input signal.

Description

Technical field [0001] The invention relates to a device for digitally processing an analog input signal, which is used to separate a desired signal whose signal power is susceptible to changes. [0002] The invention also relates to a communication device including a device for digitally processing an analog input signal. [0003] The present invention relates to the field of analog-to-digital conversion for digital signal processing, and more specifically, to the dynamic range of a signal receiver that is adjusted to separate a desired signal from a received input signal with reduced power consumption. Background technique [0004] The document WO99 / 30427 describes a programmable dynamic range receiver including an analog-to-digital converter (ADC), in particular, a sigma-delta (ΣΔ) type converter in a digital communication receiver device. In such a communication system, the signal receiver receives an analog input signal whose power change is susceptible to change, and the input...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M3/04
CPCH03M3/452H03M3/394H03M3/462H03M3/424
Inventor 罗伯特·海雷科斯·玛格丽塔·范费尔德芬吕西安·约翰内斯·布里门斯
Owner NXP BV