Patent ID: 6476614
Filing Date: 2002-11-05
Classification: H01P

Abstract:
A detector for detecting frequencies of more than one band, said detector comprising:a first transmission line, a second transmission line, and a third transmission line configured with a strip line; said first transmission line disposed between said second and third transmission lines; a length of said second transmission line parallel to said first transmission line and a length of said third transmission line parallel to said first transmission line being different; one end of said first transmission line being coupled to a terminating resistor, another end of said first transmission line being coupled to an anode terminal of a detecting diode through an end of a wideband matching circuit; a cathode terminal of said detecting diode being coupled to a load circuit; and input terminals and output terminals at each end of said second and said third transmission lines, respectively wherein said first, second, and third transmission lines and said input and output terminal at each end of said second and said third transmission lines are formed on a first face of a multilayer circuit board; said detecting diode and said wideband matching circuit are formed on a second surface of said multilayer circuit board; and thicknesses of said first, second, and third transmission lines are thinner than thickness of at least one of said input and output terminals.