THz spectrum is one of the safest areas of light for the body which can be considered in biomedical sensing applications in the human body and can be utilized for high sensitivity detection. In this paper, a THz antenna with a single negative (SNG) load is developed for early cancer detection application. The SNG load is useful to increase the gain and efficiency of the antenna. The primary antenna has a circular slot on the ground plane. Metamaterial element is placed on the cylindrical dielectric. The total size of the antenna is 400 × 400 μm2 and the loss-less quartz substrate is used to design the proposed antenna. In addition, the SNG load provides dual-band characteristics, and the proposed antenna covers 0.85 and 1 THz with high directivity and efficiency which is more than 90%. The achieved results proved that the antenna has higher sensitivity at a lower frequency. Moreover, we showed the proposed dual-band antenna can be used to increase the sensing accuracy of the device to detect the progress of cancer in a specific sample.
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