A dual-polarization balanced superconductor-insulator-superconductor mixer operating at 2 mm wavelength is realized in form of a monolithic planar integrated circuit. Planar orthomode transducers and LO couplers are enabled by using silicon membranes that are locally formed on the silicon-on-insulator substrate. The performance of the balanced mixer is experimentally investigated. Over the entire RF band (125-163 GHz), the balanced mixer shows an LO noise rejection ratio about 15 dB, an overall receiver noise about 40 K, and a cross-polarization <-20 dB. The demonstrated compactness and the performance of the integrated circuit indicate that this approach is feasible in developing heterodyne focal plane arrays.
@article{arxiv.1908.06564,
title = {Experimental Study of a Planar-integrated Dual-Polarization Balanced SIS Mixer},
author = {Wenlei Shan and Shohei Ezaki and Keiko Kaneko and Akihira Miyachi and Takafumi Kojima and Yoshinori Uzawa},
journal= {arXiv preprint arXiv:1908.06564},
year = {2019}
}
Comments
Accepted for publication in IEEE Transactions on Terahertz Science and Technology