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A dual-band and dual-polarized antenna element for K/Ka-band satellite communication systems is presented. An orthomode transducer (OMT) excites circular polarization in a square substrate integrated waveguide (SIW), that feeds an extended hemispherical dielectric lens. The feed structure is composed of a multilayer printed circuit board (PCB) and tapered superstrates. The design procedure of the...
An ultrawideband K-/Ka-band lens antenna for future satellite communication systems is presented. It consists of an extended hemispherical dielectric lens that is fed by a square substrate-integrated waveguide (SIW) and therefore offers a low-cost alternative to horn antennas. The design procedure is explained, and the antenna performance is presented. A sophisticated test fixture is developed to...
This paper discusses antenna array integration concepts for combined receiver (Rx) and transmitter (Tx) terminals that can be used for ground based Ka-band satellite communications (SatCom). The combination of Rx and Tx enables very compact array architectures, which eases integration on mobile platforms. The associated challenges are discussed in the SatCom context and a comprehensive analysis of...
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