Silver nanoparticle inkjet printed 17 GHz filter

This paper presents a RF filter fabricated on ultra-low-cost substrate by inkjet printing of silver nanoparticles. The printed device is a two-pole Chebyshev band-pass filter designed at 17 GHz with transmission zeros and a 4% bandwidth. It has a 3.6 dB insertion loss, return loss lower than -10 dB on the whole bandwidth and a rejection better than -20 dB up to 20 GHz. This RF filter is by far the inkjet printed filter with the highest center frequency reported up to now and demonstrates the potential of inkjet printing technology for high frequency filtering applications.