Micromachined 95 GHz waveguide-fed plastic horn antennas

Abstract

Waveguide-fed plastic horn antennas have been demonstrated for W-band applications using a versatile and cost-effective micro hot embossing process. The three-dimensional (3D) polymer structure with internally coated conductor is composed of a pyramidal horn, an E-plane waveguide bend, two resonant cavities for impedance matching and a connecting rectangular waveguide. Measurement results show broadband characteristics in W-band with a return loss of better than-10 dB; the bandwidth is 25.2 GHz between 76.5 and 101.7 GHz (26.5%), and the 3 dB beam widths of the E-and H-plane gain patterns at 95 GHz are 26 • and 23 • , respectively. The antenna gain is 17.04 dB at 95 GHz and the cross-polarization discriminations for E-and H-plane are 19.5 dB and 22.2 dB, respectively.

Three techniques for the fabrication of high precision, mm-sized metal components based on two-photon lithography, applied for manufacturing horn antennas for THz transceivers

“…One of the issues with the fabrication process in the previous section, is the long print time of the two-photon lithography step. A remedy for this could be using replica molding [19,20]. For this to work, the design was altered such that the part could be made in a one piece mold.…”

Micromachined W-band polymeric tunable iris filter

“…The fabrication process follows our previous work (Sammoura et al , 2008a with the addition of the deformable membrane as illustrated in Fig. 5.…”