A method of imaging and a system therefore are provided. The PSTN may receive calls from communication devices that may be either voice communication or data communication. Because there is no leakage of electric current to an outer part of an external conductor of the coaxial cable, even when the connection of the connector and the coaxial cable to the antenna, distortion of the radiation pattern of the antenna is prevented. The precharge switch may be configured to decouple the precharge capacitor from the first voltage source node, and the switch matrix may be configured to decouple the second voltage source node from the high impedance node of the memory cell and to couple the precharge capacitor to the high impedance node of the memory cell.