Patent ID: 8102221

Claim:
An RF switch comprising: a diode adapted to operate as a switch when a control current is applied thereto; a first CRLH transmission line of a Φ degree phase, which provides one signal transfer path from a terminal 1 to a terminal 2 when the diode is shorted due to application of a control current; and a second CRLH transmission line of a Φ-180 degree phase, which has a 180 degree phase difference from that of the first CRLH transmission line and provides the other signal transfer path from the terminal 1 to the terminal 2 , wherein the first CRLH transmission line and the second CRLH transmission line comprise N cells having the same electromagnetic characteristic with a CRLH transmission line characteristic, and wherein each of the cells has an electrical length p, which is smaller than ¼ of a wavelength of a designed center frequency.