Patent ID: 7855616

Claim:
A radio frequency switch comprising: first, second and third transmission lines for forming first, second and third ports; and first, second and third slot line pattern portions connected to one another, for signal transferring with the first, second and third transmission lines, wherein the first slot line pattern portion includes a slot line pattern for providing a signal received from the first transmission line to a connection to the other slot line pattern portions, and a switching circuit installed at a predetermined position of the slot line pattern, for blocking a signal by shorting the gap of a slot line according to an external control signal, and wherein the second slot line pattern portion includes a loop slot line formed by a first half loop slot line and a second half loop slot line, for signal transferring between a portion thereof and the second transmission line, a second sub-slot line for providing a signal received from the connection to the other slot line pattern portions to the second transmission line through the loop slot line, and a switching circuit installed at a predetermined position of slot line pattern, for blocking a signal by shorting the gap of a slot line according to an external control signal.