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A Monolithic Wilkinson Power Divider on Diamond via a Combination of Additive Manufacturing and Thin-Film Process

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


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE Radio and Wireless Symposium, RWS 2020 : 26-29 January 2020, San Antonio, Texas, USA, IEEE Radio and Wireless Week 2020
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-1120-9
ISBN: 978-1-7281-1119-3
ISBN: 978-1-7281-1121-6
Radio and Wireless Symposium (RWS) <2020, San Antonio/Tex.>
Radio & Wireless Week (RWW) <2020, San Antonio/Tex.>
Fraunhofer CCD ()

This paper demonstrates the fabrication process and RF testing of a monolithic Wilkinson power divider (WPD) on single-crystalline diamond (SCD). The Grounded Coplanar Waveguide (GCPW) and microstrip (MS) transmission lines (TLs), the via-less GCPW-to-MS transitions, and the ground plane in the WPD configuration are printed on a 5×5 mm 2 SCD wafer with the Aerosol Jet Printing (AJP) technique using silver ink. The resistor is fabricated via a combination of thin-film process and standard photolithography using nickel chromium (NiCr). Our results show good RF performance from 22 up to 40 GHz, indicating that SCD is a good platform for the integration of high-power and high-frequency electronics on a single substrate using additive manufacturing techniques.