The Design of a Bowtie Antenna for 0.65 THz Detection

We designed a planar bow-tie antenna structure on the high-resistivity silicon substrate for the Nb
₅
N
₆
micro-bolometer at the frequency range from 0.55 THz to 0.75 THz. To effectively couple the high frequency signal, the Nb
₅
N
₆
microbolometer is placed in the antenna gap. CST software was used to carry out numerical simulations for this antenna structure. The E-field and radio frequency (RF) current distribution show conspicuous resonance at about 0.65 THz. Finally, the delicate design was verified by the experimental results.