A Compact Nano Device of Antenna and Filter for THz Application Separated by a Sandwiched Plastic Isolator
摘要
In this work, a compact device is presented by combining a nano antenna and a nano filter. The objective of the work was to design a compact nanoscale device integrating a nano antenna and a nano filter with a plastic separator to reduce the effects of mutual coupling. The working area of the device is 25 nm × 16 nm. Thickness of the device is 6.096 nm, of which 1.524 nm each is allotted for the antenna and the filter, while the plastic layer is 3.048 nm thick. Both the antenna and filter are based on Arlon® 25N substrates (ɛr = 3.38) with graphene material. The proposed filter has passbands of 5–6.4 THz, 7–7.1 THz, and 10.2–10.5 THz, and the remaining portion is treated as stop bands from 1 THz to 14 THz. The proposed antenna shows a working bandwidth of 6.4–11.1 THz, resonating at 9.5 THz. With the optimized structure, the antenna has a maximum gain of around 8.3 dB and maximum efficiency reaching 95%. This novel device with a plastic sandwich-like isolator enables both the filter and antenna to work effectively without any mutual coupling between them. The overall structure was designed and simulated in an ANSYS HFSS 22.0 environment.