Substrate Integrated Waveguide Integration Platform for 60 GHz Indoor Photonic Transmitter

Conference: GeMiC 2014 - German Microwave Conference
03/10/2014 - 03/12/2014 at Aachen, Germany

Proceedings: ITG-Fb. 246: GeMiC 2014

Pages: 4Language: englishTyp: PDF

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Flammia, Ivan; Khani, Besher; Stoehr, Andreas (Center for Semiconductor Technology and Optoelectronics (ZHO), University of Duisburg-Essen, Lotharstr. 55, 47057 Duisburg, Germany)

We present a novel integration platform for 60 GHz Radio-over-Fiber (RoF) photonic transmitters based on RF laminates. The platform is designed to allow the connection of a high-frequency photodiode (PD) chip, whose coplanar waveguide (CPW) output is wire-bonded to a grounded coplanar waveguide (GCPW) created on the laminate, to an H-plane substrate integrated waveguide (SIW) horn antenna. A DC-decoupled GCPW-to-SIW transition, featuring a fully planar bias tee, is used to efficiently bias the PD and to deliver the generated 60 GHz signal to the antenna. Simulations show that in the whole 57-64 GHz band the return loss (RL) of the platform (transition and antenna) is at least 6.5 dB, while the RF-to-DC isolation (IS) is higher than 27 dB. Measurements confirm a RL of at least 4 dB in the whole operating band and the desired sectorial radiation properties of the antenna.