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A Monolithic RF Lowpass Filter on Diamond via Additive Manufacturing

: Konstantinou, X.; Craton, M.T.; Herrera-Rodriguez, C.J.; Hardy, A.; Albrecht, J.D.; Grotjohn, T.; Papapolymerou, J.


Institute of Electrical and Electronics Engineers -IEEE-; IEEE Antennas and Propagation Society:
IEEE USNC-CNC-URSI North American Radio Science Meeting, Joint with AP-S Symposium 2020. Proceedings : 5-10 July 2020, virtually held in Toronto, Ontario, Canada
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-6197-6
ISBN: 978-1-946815-08-8
ISBN: 978-1-946815-09-5
North American Radio Science Meeting <2020, Online>
International Symposium on Antennas and Propagation <2020, Online>
Fraunhofer CCD ()

This paper demonstrates the design, fabrication, and RF testing of a monolithic lowpass filter (LPF) on single-crystalline diamond (SCD). This is the first time an RF filter has been fabricated on SCD. The LPF consists of grounded coplanar waveguide (GCPW) and microstrip (MS) transmission lines, via-less GCPW-to-MS transitions, and a bottom ground plane, all printed on a 5 mm x 5 mm x 0.15 mm SCD wafer with Aerosol Jet Printing technology using silver ink. The LPF is a stepped-impedance filter designed to have a cutoff frequency of 40 GHz and was measured from 10 MHz up to 67 GHz. Our results indicate that SCD is a good platform for the realization of high-frequency RF structures on a single substrate using additive manufacturing techniques.