Waveguide slot antenna
A waveguide slot antenna utilizing a waveguide as a feeding line and having a linear slot provided in a wall of the waveguide, the waveguide slot antenna comprising a flat-shaped conductor plate which has a first through-hole formed in a shape approximately identical to that of the slot and provided at a position opposed to the slot, and a second through-hole provided at a position intersecting the first through-hole.
1. A waveguide slot antenna utilizing a waveguide as a feeding line and having a linear slot provided in a wall of the waveguide, the waveguide slot antenna comprising a flat-shaped conductor plate which has a first through-hole formed in a shape approximately identical to that of the slot and provided at a position opposed to the slot, and a second through-hole provided at a position intersecting the first through-hole.
2. The waveguide slot antenna as defined in claim 1 , wherein the conductor plate has a thickness which is 0.2 to 0.3 times a length of a wavelength of use.
3. The waveguide slot antenna as defined in claim 2 , wherein the second through-hole has a longitudinal length greater than a longitudinal length of the first through-hole.
4. The waveguide slot antenna as defined in claim 3 , wherein the waveguide is a hollow waveguide or a dielectric waveguide.
5. An array antenna device comprising the waveguide slot antenna as defined in claim 1 .