Wideband High-Gain Dielectric Lens Integrated With Tapered Rod Antenna for W-Band Applications

In this letter, a wideband high-gain dielectric lens integrated with a tapered rod antenna using a perforated H-guide is presented for the W-band [(75 to 110) GHz] applications. The designed antenna is fed through a rectangular waveguide WR-10. The antenna can be divided into three sections: metallic housing, perforated H-guided-based tapered dielectric sections, and extended hemisphere dielectric lens. The tapered dielectric section has three parts: tapered feed, perforated H-guide, and radiating tapered end. Further, to enhance the gain, an extended hemisphere dielectric lens is integrated with the radiating tapered end. The proposed antenna shows endfire radiation characteristics with a substantial gain of around 23.9 dBi and excellent cross-polarization (x-pol) levels in both the E- and H-planes. The mechanical stability, wide impedance bandwidth, better radiation efficiency, and high gain of the designed antenna make it a suitable candidate for W-band applications.