Patent ID: 7148766
Filing Date: 2006-12-12
Classification: H01P

Abstract:
1. Outside unit of a transmission/reception system comprising a transmit circuit embodied in microstrip technology and a transmission/reception waveguide antenna, the transmit circuit comprising a local oscillator, wherein said outside unit comprises a transition, between the transmit circuit and the antenna, said transition comprising: a probe inside the waveguide, said probe being linked electrically to the transmit circuit, said probe being placed on a substrate in a plane perpendicular to the direction of the propagation of the wave inside the waveguide, said substrate being located at a distance which is an odd multiple of a quarter of the guided wavelength away from a bottom of the waveguide, and a first resonant cavity coupled by a first hole placed at the level of the substrate, wherein the waveguide comprises a second cavity coupled to the waveguide by a second hole, the second hole being diametrically opposite the first hole.