Patent ID: 6806788
Filing Date: 2004-10-19
Classification: H01H,H01P

Abstract:
A micromachine switch formed on a substrate to switch connection states of two RF signal lines by displacing a contact, characterized by comprising:driving means for displacing the contact on the basis of a control signal; a first control signal line for applying the control signal to said driving means; and a first RF signal inhibiting means connected to said first control signal line to inhibit, from passing therethrough, an RF signal flowing into the RF signal lines, characterized in that: said first RF signal inhibiting means is constituted by a high-impedance line having one end connected to said driving means, a line length of about Â¼ a wavelength of the RF signal, and a characteristic impedance higher than a characteristic impedance of each of the RF signal lines, and a low-impedance line having one end connected to the other end of the high-impedance line, the other end which is open, a line length of about Â¼ the wavelength of the RF signal, and a characteristic impedance lower than the characteristic impedance of the high-impedance line; and said first control signal line is connected to the other end of the high-impedance line.