Transit structure of waveguide and SIW

摘要

A transit structure of a waveguide and a SIW is provided. According to the present invention, a SIW and a waveguide are directly connected so that when a signal is transited with a reduced loss and a signal is transmitted while satisfying a frequency band width required for an automotive radar. Further, signal transmission characteristic at every frequency in a bandwidth may be uniformly maintained. Further, an additional dielectric substrate is not required so that a reduced size, a reduced weight, and a reduced cost may be achieved and a process of bonding different substrates is not required.

主权项

1. A transit structure comprising:
a Substrate Integrated Waveguide (SIW); and a waveguide having a tubular shape and including a metal, the waveguide being directly coupled to a lower surface of the SIW, wherein the SIW includes:
a dielectric substrate;a first conductor which is disposed on an upper surface of the dielectric substrate;a second conductor which is disposed on a lower surface of the dielectric substrate, the second conductor including a stub that has first and second end portions, the first end portion of the stub being electrically connected to an enclosing portion of the second conductor, the enclosing portion of the second conductor being coupled to the waveguide, the stub performing impedance matching between the SIW and the waveguide, the stub and the enclosing portion of the second conductor enclosing a non-resonating slot that corresponds to an aperture of the waveguide; anda plurality of vias which is disposed in the dielectric substrate.