Transverse-electric (TE) polarized Bessel-beam launchers working at millimeter-wave frequencies are theoretically described, simulated, realized, and experimentally validated. A limited-diffractive near-field distribution up to the so-called nondiffractive-range distance of about 30 mm has been obtained in this work. To generate a pure TE leaky mode, avoiding undesired transverse-magnetic (TM) field components, an innovative feeding scheme is designed consisting of a circular array of four radial slots. To enhance compactness, the four slots are excited through a single-port meandered microstrip feeding network, which has been optimized to ensure the same signal distribution exciting the slots while minimizing unwanted coupling among them. Full-wave simulations allowed for accurately designing a resonant cavity at 30 GHz able to generate a TE-polarized Bessel beam (BB). Two launchers of this kind are then …