Continuous transverse stub arrays are wide band, wide scanning antennas consisting of an arrangement of long slots or parallel plate waveguide apertures radiating in free space. A line source is generally required to feed these arrays. Here, we show that such a line source can be created over the radiating aperture using a 2D arrangement of coaxial probe transitions. The coaxial transitions are directly integrated into the parallel plate waveguides feeding the slots. Such a solution avoids using quasi-optical systems or bulky corporate networks to feed the array. The proposed 2D feeding scheme also allows steering the main beam of the array. This is an additional benefit with respect to previous designs for which scanning was limited to a single plane. An array of 8×4 elements validates the concept at 5.8 GHz. Measurements show that the array exhibits a field of view of ±30 • in elevation over the 5.4 − 6.2 GHz band, with an active reflection coefficient for the central elements better than −10 dB.