Patent ID: 6624716
Filing Date: 2003-09-23
Classification: H01P

Abstract:
A microstrip to circular waveguide transition, comprising:an elongated circular waveguide portion; a stripline circuit portion disposed within the circular waveguide section, such stripline portion comprising: a strip conductor disposed in a strip conductor plane, such strip conductor extending along a longitudinal axis of the circular waveguide portion from a first region of the transition to a longitudinally spaced second region of the transition; a pair of overlying ground planes extending along the longitudinal axis from the first region to the second region and disposed in overlying planes parallel to the strip conductor plane, such pair of ground planes being dielectrically separated from the strip conductor; wherein the strip conductor is spaced from a pair of diametrically opposed first portions of the sidewalls in the first region and bends towards a first of a pair of diametrically opposed second portions of the sidewalls and away from the second one of the pair of opposed second portions of the sidewalls as such strip conductor extends within the waveguide portion towards the second region; wherein the pair of overlying ground planes is disposed adjacent the diametrically opposed sidewall portions of the sidewalls in the first region of the transition and bend away from the first one of the pair of diametrically opposed second portions of the sidewalls and towards the second one of the diametrically opposed second portions of the sidewalls as such pair of ground planes extends within the waveguide section towards the second region.