Patent ID: 6529095
Filing Date: 2003-03-04
Classification: H01P,H01Q

Abstract:
An antenna duplexer comprising:an antenna; a transmission circuit; a receiving circuit; a first transmission line to connect said transmission circuit to said antenna; and a second transmission line to connect said receiving circuit to said antenna, wherein a length of said first transmission line is approximately a quarter of a wavelength of a transmission frequency, and a length of said second transmission line is approximately a quarter of a wavelength of a receiving frequency, and wherein a dielectric block in the form of a rectangular parallelepiped dielectric block is provided, a first strip conductor, and second and third strip conductors which branch from approximately a center along a length of said first strip conductor are formed on a surface of said dielectric block, said antenna comprises said first strip conductor, said first transmission line comprises said second strip conductor, and said second transmission line comprises said third strip conductor.