APPARATUS AND METHODS FOR CONSTRUCTING AND PACKAGING WAVEGUIDE TO PLANAR TRANSMISSION LINE TRANSITIONS FOR MILLIMETER WAVE APPLICATIONS

摘要

Waveguide-to-transmission line transitions are provided for broadband, high performance coupling of power at microwave and millimeter wave frequencies. In one aspect, a transition apparatus (10) includes a transition housing (11) comprising a rectangular waveguide channel (C) and an aperture (13) formed through a broad wall (11a) of the rectangular waveguide channel (C), a substrate ( 12) having a first surface and a second surface opposite the first surface, mid a planar transmission line (12a) and a planar probe (12b) formed on the first surface, wherein the planar transmission line (12a) comprises a first conductive strip and a second conductive strip, wherein the planar probe (12b) is connected to, and extends from, an end of the first conductive strip, and wherein an end of the second conductive strip is terminated by a stub and wherein the substrate (22) is positioned in the aperture (13) such that the printed probe (12b) protrudes into the rectangular waveguide channel (C) at an offset from a center of the broad wall (11a) and wherein the ends of the first and second conductive strip are aligned to an inner surface of the broad wail (11a) of the rectangular waveguide channel (C).