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Reflectarrays and transmitarrays are extremely important in the applications of terahertz (THz) technologies, as they feature merits like high gain and low cost. In this work, a reflectarray and a transmitarray are designed at 300GHz. A 32 × 50 offset-fed wideband reflectarray antenna, based on single-layer elements with a large and linear phase response, shows a fixed beam direction without frequency...
This work is focused on wideband terahertz (THz) beam/focus scanning reflectarrays/mirrors, to provide beam scanning solutions to THz real-time imaging systems. For the THz reflectarrays, frequency beam scanning method previously proposed by our group is experimentally verified in a frequency band of 200 ∼ 300GHz. Meanwhile, the common mechanical scanning by offsetting the feed is also numerically...
As an alternative of parabolic reflectors, microstrip reflectarrays inherit their many merits as well as those of conventional antenna arrays. This work is focused on solving the problem of terahertz (THz) beam scanning by reflectarrays. The proposed reflectarray is demonstrated based on novel single-layered elements with a linear phase delay and multi-frequency phase-matching method. An operating...
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