Signal transformation apparatus and position recognition system having the same

A position recognition system comprising:

• a transmission unit which outputs a first transmission signal and a second transmission signal with a predetermined frequency range;
• a reception unit which receives a first reception signal and a second reception signal that are reflected by a target after the first and second transmission signals, respectively, reach the target;
• a signal transformation unit which generates a reserve pulse signal, transforms the reserve pulse signal into a first pulse signal to output the first transmission signal by varying the reserve pulse signal, and transforms the reserve pulse signal into second pulse signals to output the second transmission signal by varying the reserve pulse signal based on the first reception signal;
• and
• a position determination unit which determines first position information of the target based on the first transmission signal and the first reception signal, and determines second position information of the target based on the second transmission signal and the second reception signal,
• wherein the signal transformation unit generates control signals to vary the reserve pulse signal based on the first position information, and comprises a switch bank having mechanical switches which are selectively activated in response to the control signals and generate the second pulse signals, and a transmission line between nodes where the mechanical switches are formed.