Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain

An automatic gain control and automatic gain technology, applied in the field of receivers, can solve the problems of unreasonable operation of receivers, multimedia signal flicker, audio signal noise, etc., and achieve the effect of widening the sensitivity range, reducing errors, and eliminating false alarm signals.

Active Publication Date: 2014-02-12
锐立平芯微电子(广州)有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The input power level of the receiver signal will cause unreasonable operation of the receiver, causing flickering of th

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  • Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain
  • Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain
  • Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain

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Embodiment Construction

[0029] The embodiments of the present invention are described in detail below.

[0030] Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clar...

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Abstract

The invention provides a method for controlling a receiver by means of automatic gain. The method for controlling the receiver by means of the automatic gain comprises the steps that (a) a wireless signal is received, and the wireless signal is processed to form an effective signal within the system bandwidth, (b) the strength of the received signal is detected, (c) the strength of the received signal is compared with target signal power, (d) a radio frequency automatic gain amplifier and a base band automatic gain amplifier are controlled respectively to amplify or attenuate the received signal on a signal link, and (e) the power of the amplified or attenuated signal is made to reach the target signal power. Correspondingly, the invention further provides a receiver device adopting automatic gain control. According to the receiver device adopting the automatic gain control and the method for controlling the receiver by means of the automatic gain, errors, caused by the integrated circuit technique, of the performance of the receiver can be reduced, the range of sensitivity of the receiver is widened, continuity of signals of the receiver is guaranteed, false-alarm signals caused by interference signals are eliminated, and stability of the signals of the receiver is guaranteed.

Description

Technical field [0001] The invention relates to a receiver with automatic gain control, in particular to an automatic gain controller used in digitally modulated signals transmitted in digital mobile multimedia broadcasting. Background technique [0002] Receivers using automatic gain control have a wide range of applications, especially in mobile multimedia receivers. Because of the continuity of signal levels, stability is a necessary condition for high-quality receivers. For sudden changes in signal levels, the receiver is required to respond quickly; for sudden changes in interference, false alarms can be eliminated; for slowly changing signal levels, it can be compensated with small steps. [0003] The radio signal level is easily affected by the surrounding environment. For example, when a mobile receiver enters a tunnel or behind an obstacle that cannot be directly shot by a satellite, the receiver's input signal power level will change gently; when lightning strikes or a f...

Claims

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Application Information

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IPC IPC(8): H04B1/10H04B1/16
Inventor 杨涛阎跃鹏姜宇郭桂良
Owner 锐立平芯微电子(广州)有限责任公司
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