420-GHz terahertz SIW slot antenna with quartz superstrates in silicon technology

更新时间:2023-05-28

【摘要】To meet the needs of terahertz imaging and communication, a 420-GHz on-chip antenna(OCA) with high gain and high radiation efficiency is designed using a standard 55 nm CMOS technology. In the proposed OCA structure, the substrate integrated waveguide(SIW) antenna forms a back cavity to suppress the surface waves and separate the radiation aperture from the low-resistivity substrate. To increase the efficiency of OCA, a single-layer quartz superstrate is proposed. An analytical model to calculate the radiation efficiency is presented, and a detailed design approach is described. The proposed antenna is simulated using Ansoft HFSS. The simulated antenna has a maximum gain of 4.9 d Bi and a radiation efficiency of 76.27%. The bandwidth of S11 below-10 dB is 44 GHz. The OCA has good performance and can be widely used in terahertz imaging and communication.

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