The wireless device of multi-band MIMO operation can be carried out

The wireless device of multi-band MIMO operation can be carried out

  • CN 103,155,276 B
  • Filed: 08/03/2011
  • Issued: 11/25/2015
  • Est. Priority Date: 08/03/2010
  • Status: Active Grant
First Claim
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1. can carry out wireless handheld or the portable unit of multi-band MIMO operation, comprise radiation stepup transformer and communication module, described communication module comprises at least one mimo system, and at least one mimo system wherein said comprises:

  • -radiating system of electromagnetic wave signal can be transmitted and received, at least comprise the first radiating system and the second radiating system, at least two in wherein said radiating system can transmit and receive electromagnetic wave signal at least the first frequency band, and at least two in wherein said radiating system can transmit and receive electromagnetic wave signal at least the second frequency band;

    And-MIMO module, through arranging the electromagnetic wave signal for the treatment of being transmitted and received by described at least two radiating systems;

    Wherein said MIMO module comprises at least two MIMO internal ports;

    Each in wherein said radiating system comprises the outside port at least one corresponding one of being connected in described MIMO internal port, and irradiation structure, and described irradiation structure comprises;

    -ground plane, can support at least one radiation mode, and described ground plane comprises tie point;

    -described radiation stepup transformer is through arranging that described radiation stepup transformer comprises tie point with the electromagnetic energy being provided by described ground plane/received that is coupled;

    Described radiation stepup transformer is engaged in diameter and is less than in the imaginary sphere of 1/4 of diameter corresponding to the radian spheroid under the free space operative wavelength of the low-limit frequency of the first frequency band.-and internal port, between the described tie point that described internal port is limited to described radiation stepup transformer and the described tie point of described ground plane;

    Described radiation stepup transformer comprises the first radiation stepup transformer and the second radiation stepup transformer, and the first radiation stepup transformer is substantially near first jiao of ground plane, and the second radiation stepup transformer is substantially near second jiao of ground plane, and second jiao different with first jiao;

    Wherein said radiating system comprises radio system further, and described radio system comprises;

    -be connected to port on the outside port of the correspondence of described radiating system;

    -and the port that is connected on the described internal port of described irradiation structure;

    Wherein when disconnecting from described radio system, the input impedance of the described irradiation structure therein port measured has the imaginary part being not equal to zero, this situation is all set up under any frequency at least one frequency band in the described operational frequency bands be associated with described internal port, and at least one frequency band described in described operational frequency bands comprises described first frequency band and/or described second frequency band;

    Wherein said radio system is through arranging to change, the described impedance of described irradiation structure to operate at least one frequency band described in the described operational frequency bands be associated with described internal port.

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