Powerless electronic notepad and powerless wireless transmission system using the same

A powerless wireless transmission system comprising:

• a powerless electronic notepad including a pad having a plurality of piezoelectric elements arranged in a lattice pattern therein, and an RFID tag having a memory storing data and performing RFID communications while a piezoelectric element placed underneath a point of the pad against which a pen is pressed generates voltage among the plurality of piezoelectric elements to thereby supply power to the memory, and the coordinates of the point against which the pen is pressed are stored in the memory;
• and
• an external apparatus having an RFID reader performing RFID communications with the RFID tag.