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access icon free Lost-shell casting for rapid prototyping in RF and microwave applications

Lost-shell casting as a novel fabrication technique is examined, providing the durability of solid metal components with the shape flexibility of additive manufacturing. The feasibility of lost-shell casting is established for use in microwave and RF applications. A well known, standard rectangular cavity resonator design was used to validate this novel method of fabrication. Using lost-shell casting, a cavity resonator with a quality factor of 2200 was constructed. The results shown in this work confirm the validity of lost-shell casting as a novel method of rapid fabrication for completely metalised components in RF and microwave applications.


    1. 1)
      • 1. Johann, S., William, F., Aurélien, P., et al: ‘Plastic and metal additive manufacturing technologies for hyperfrequency passive components up to Ka band’. 2016 46th European Microwave Conf. (EuMC), London, UK, October 2016, pp. 373376.
    2. 2)
    3. 3)
      • 6. Snelling, D., Li, Q., Meisel, N., et al: ‘Lightweight metal cellular structures fabricated via 3D printing of sand cast molds’, Adv. Eng. Mater., 2015, 17, (7), pp. 923932. Available at
    4. 4)
      • 7. Mu-Hoe, Y.-H., Yang, L.: ‘Measurement and simulation of thermal stability of poly(lactic acid) by thermogravimetric analysis’, J. Test. Eval., 2009, 37, (4), pp. 364370.
    5. 5)
    6. 6)
      • 3. Benge, M.D., Huck, R.C., Sigmarsson, H.H.: ‘X-band performance of three-dimensional, selectively laser sintered waveguides’. 2014 IEEE Antennas and Propagation Society Int. Symp. (APSURSI), Memphis, TN, USA, July 2014, pp. 1314.
    7. 7)
      • 8. Pozar, D.M.: ‘Microwave engineering’ (John Wiley & Sons, Hoboken, NJ, USA, 2012).
    8. 8)
      • 10. ANSYS: ‘High frequency structure simulator’.
    9. 9)
    10. 10)
      • 9. Forberg, H.O., Chia, H.E., Keith, P.S.: ‘Process for degassing aluminum and aluminum alloys’. US Patent US3 958 981A, 1976.

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