Wireless communication system receiver and amplifier

Wireless communication system receiver and amplifier

  • CN 102,025,331 B
  • Filed: 09/09/2010
  • Issued: 05/17/2017
  • Est. Priority Date: 09/18/2009
  • Status: Active Grant
First Claim
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1. a kind of radio communication system receiver, it is characterised in that include:

  • Multiple Signal Processing Elements, for producing receptor output according to radiofrequency signal, the plurality of Signal Processing Element includesAmplifier, wherein AB class biased amplifiers are included in the amplifier;

    Wherein the plurality of Signal Processing Element is arranged on chip, and the AB classes biased amplifier is in the radio communication systemRadiofrequency signal described in the pre-treatment of other amplifiers that system receptor is included;

    Wherein, the AB classes biased amplifier is included:

    First amplifier block, couples the input port and output port of the amplifier, for amplifying to input signal, describedFirst amplifier block has input stage, receives the input signal to the input port in the amplifier;

    Second amplifier block, couples the input port and the output port of the amplifier, described defeated for amplifyingEnter signal, the second amplifier block is included:

    First input stage, receives institute to the input port in the amplifierState input signal;

    And first switch unit, coupling first input stage, first switch unit described first will be input intoThe output node of level is selectively coupled to the output port or reference voltage of the amplifier;

    Bias circuit, couples the first amplifier block and the second amplifier block, to first amplifierBlock and the second amplifier block provide bias;

    AndSwitch controller, controls the running of at least described first switch unit;

    Wherein when the amplifier enters the first gain mode, the bias circuit application A classes are biased into described first and amplifyFirst input stage in the input stage and the second amplifier block in device block, the switch controller controlFirst switch unit is made, the output node of first input stage is coupled to into the reference voltage.

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