Additive manufacturing of microwave antennas up to 60 GHz

This paper presents three different microwave antennas made by plastic additive manufacturing. Firstly two broadband mode converters made with the Polyjet© technology are presented with their measurement. They can be used as E-plane omnidirectional antennas. The first one is designed to work in the Ka-band (measured from 28 to 36 GHz) and the second is made to work in the V-band (measured from 45 to 61 GHz). The experimental behaviour closely matches the simulated results with a realized gain contained between 6 and 8dB over the different frequencies bands. The last device is a Gaussian corrugated horn antenna designed to work over the Ka band, between 26 and 40 GHz. A first outlook of the expected performances and the fabricated prototypes are presented in this paper along.