Mobile communication terminal including RFID reader and transception method thereof

1. A mobile communication terminal, comprising:

a base band unit for controlling the mobile communication terminal;

a radio frequency (“RF”) unit coupled with the base band unit and including an antenna, the RF unit for transceiving a first signal in response to a first control signal received from the base band unit;

a radio frequency identification (“RFID”) unit coupled with the RF unit, the RFID unit for transceiving a second signal with a RFID transponder in response to a second control signal received from the base band unit,

wherein the first signal and the second signal are both transmitted and received through the antenna,

wherein the RF unit has a first position to transmit the first signal from the antenna to the base band unit, and a second position to transmit the second signal from the antenna to the RFID unit, and the first position and the second position are in response to a third control signal from the base band unit.

2. The mobile communication terminal of claim 1 , wherein the first signal represents voice communications or data communications.

3. The mobile communication terminal of claim 1 , wherein the RF unit comprises:

an RF transception unit for transceiving the first signal;

an antenna switch module coupled with the antenna;

a path selection unit including a switch;

a RFID transmission selection unit for transmitting one of the first signal and the second signal to the antenna; and

a high output amplification unit for amplifying the first signal and the second signal.

4. The mobile communication terminal of claim 3 , wherein the RF unit further comprises a filter coupled between the antenna switch module and the base band unit.

5. The mobile communication terminal of claim 3 , wherein the RFID transmission selection unit comprises a switching device for selecting to transmit the first signal or the second signal to the antenna.

6. The mobile communication terminal of claim 3 , wherein the RF transception unit is turned off when the RFID transmission selection unit transmits the second signal.

7. The mobile communication terminal of claim 3 , wherein the RFID unit comprises:

a RFID reader control unit to encode and signal-process a transmission signal received from the base band unit, and to decode and signal-process a reception signal received from the path selection unit; and

a RFID RF unit to convert a frequency of the transmission signal and to output the transmission signal to the RFID transmission selection unit, and to convert a frequency of the reception signal and to output the reception signal to the RFID reader control unit.

8. The mobile communication terminal of claim 7 , wherein the RFID RF unit comprises:

a RFID transmission unit for modulating the transmission signal, for converting a frequency of the transmission signal, and for filtering and amplifying the transmission signal; and

a RFID reception unit for filtering the reception signal, for amplifying the reception signal, and for converting a frequency of the reception signal.

9. The mobile communication terminal of claim 8 , wherein the RFID transmission unit comprises:

a modulator coupled with an output terminal of the RFID reader control unit;

a first amplifier coupled with the modulator;

a first filter coupled with the first amplifier;

a second amplifier coupled with the first filter;

a power division unit coupled with the second amplifier, the power division unit for dividing a voltage level of the transmission signal; and

an attenuation unit coupled with the power division unit.

10. The mobile communication terminal of claim 9 , wherein the modulator converts a frequency of the transmission signal from a lower frequency band to an ultra high frequency (UHF) band.

11. The mobile communication terminal of claim 8 , wherein the RFID reception unit comprises:

a filter for filtering the reception signal;

a low noise amplifier coupled with the filter;

a power division unit for dividing a voltage level of the reception signal; and

a demodulator for demodulating the reception signal and for converting a frequency of the reception signal.

12. The mobile communication terminal of claim 11 , wherein the demodulator converts a frequency of the reception signal from a higher frequency to a frequency band of the RFID reader control unit.

13. A mobile communication terminal, comprising:

a base band unit for controlling the mobile communication terminal;

a radio frequency (“RF”) unit coupled with the base band unit, the RF unit comprising:

an antenna;

a path selection unit; and

an RFID transmission selection unit; and

an RFID unit comprising an RFID transmission unit and an RFID receiving unit,

wherein an output terminal of the RFID transmission unit is coupled with an input terminal of the RFID transmission selection unit, an input terminal of the RFID receiving unit is coupled with an output terminal of the path selection unit, and the mobile communication terminal transceives a signal from the RF unit and a signal from the RFID unit using a cellular communication protocol through the antenna.

14. The mobile communication terminal of claim 13 , wherein the cellular communication protocol comprises a GSM-based protocol.

15. The mobile communication terminal of claim 13 , wherein the cellular communication protocol comprises a protocol used to transmit information signals between the mobile communication terminal and an asynchronous core network.