The new constructions of millimeter wave band pass and band stop filters were designed. Filters are builded on the cheap plastic metalized substrates and are suitable for integration into the all-planar millimeter wave transceivers. The new constructions of hybrid integrated low-noise millimeter wave oscillators for frequency up- and down converters were designed. Oscillators can be used in the wireless broadband access system. The new constructions of all-planar orthomode transducers were designed and investigated both theoretically and experimentally.