An electronic apparatus, comprising: a main body , having a receiving space defined therein, wherein an opening is formed in the main body to communicate with the receiving space such that the receiving space is communicatable outside via the opening ; a sliding seat , received in the receiving space , and movably connected to the main body such that the sliding seat has a capability of being moved out from or retracted into the receiving space via the opening ; a middle frame , received in the receiving space ; and four first antenna radiators (T11), wherein three of the four first antenna radiators (T11) are disposed on the middle frame and one of the four first antenna radiators (T11) is disposed on the sliding seat respectively, wherein the four first antenna radiators (T11) have a capability of operating in a first frequency band; characterized in that the electronic apparatus further comprises a frequency offset corrector , wherein the frequency offset corrector is configured to correct a frequency offset of any antenna radiator near the sliding seat caused by a position change of the sliding seat relative to the main body ; the sliding seat includes a seat body and a lid portion , the seat body and the lid portion are connected to each other by a side face of the seat body and a side face of the lid portion ; the lid portion includes a first surface , when the sliding seat is received in the receiving space , the first surface forms a part of a facade of the electronic apparatus ; the lid portion is movably connected to the seat body , the lid portion has a capability of moving in a predetermined distance relative to the seat body in a plane defined by the first surface of the lid portion . a main body , having a receiving space defined therein, wherein an opening is formed in the main body to communicate with the receiving space such that the receiving space is communicatable outside via the opening ; a sliding seat , received in the receiving space , and movably connected to the main body such that the sliding seat has a capability of being moved out from or retracted into the receiving space via the opening ; a middle frame , received in the receiving space ; and four first antenna radiators (T11), wherein three of the four first antenna radiators (T11) are disposed on the middle frame and one of the four first antenna radiators (T11) is disposed on the sliding seat respectively, wherein the four first antenna radiators (T11) have a capability of operating in a first frequency band; characterized in that the electronic apparatus further comprises a frequency offset corrector , wherein the frequency offset corrector is configured to correct a frequency offset of any antenna radiator near the sliding seat caused by a position change of the sliding seat relative to the main body ; the sliding seat includes a seat body and a lid portion , the seat body and the lid portion are connected to each other by a side face of the seat body and a side face of the lid portion ; the lid portion includes a first surface , when the sliding seat is received in the receiving space , the first surface forms a part of a facade of the electronic apparatus ; the lid portion is movably connected to the seat body , the lid portion has a capability of moving in a predetermined distance relative to the seat body in a plane defined by the first surface of the lid portion . <EOS>